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* [PATCH v8 00/11] iotests: use python logging
@ 2020-03-17  0:40 John Snow
  2020-03-17  0:40 ` [PATCH v8 01/11] iotests: do a light delinting John Snow
                   ` (10 more replies)
  0 siblings, 11 replies; 26+ messages in thread
From: John Snow @ 2020-03-17  0:40 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

This series uses python logging to enable output conditionally on
iotests.log(). We unify an initialization call (which also enables
debugging output for those tests with -d) and then make the switch
inside of iotests.

It will help alleviate the need to create logged/unlogged versions
of all the various helpers we have made.

Also, I got lost and accidentally delinted iotests while I was here.
Sorry about that.

V8:

Key:
[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively

001/11:[----] [--] 'iotests: do a light delinting'
002/11:[----] [--] 'iotests: don't use 'format' for drive_add'
003/11:[----] [--] 'iotests: ignore import warnings from pylint'
004/11:[----] [--] 'iotests: replace mutable list default args'
005/11:[----] [--] 'iotests: add pylintrc file'
006/11:[down] 'iotests: drop Python 3.4 compatibility code'
007/11:[0033] [FC] 'iotests: limit line length to 79 chars'
008/11:[----] [--] 'iotests: add script_initialize'
009/11:[----] [--] 'iotest 258: use script_main'
010/11:[----] [--] 'iotests: Mark verify functions as private'
011/11:[0007] [FC] 'iotests: use python logging for iotests.log()'

6: Split out the little drop of Python 3.4 code. (Phil)
7: Change line continuation styles (QEMU Memorial Choir)
11: Rebase changes; remove use_log from more places, adjust test output.

V7:

- All delinting patches are now entirely front-loaded.
- Redid delinting to avoid "correcting" no-else-return statements.
- Moved more mutable list corrections into patch 4, to make it standalone.
- Moved pylintrc up to patch 5. Disabled no-else-return.
- Added patch 6 to require line length checks.
  (Some python 3.4 compatibility code is removed as a consequence.)
- Patch 7 changes slightly as a result of patch 4 changes.
- Added some logging explainer into patch 10.
  (Patch changes slightly because of patch 6.)

V6:
 - It's been so long since V5, let's just look at it anew.
 - Dropped patch 1, rebased, added more delinting.
 - I'm not touching the supported_platforms thing.
   Not interested in rehashing that debate.

V5:
 - Rebased again
 - Allow Python tests to run on any platform

V4:
 - Rebased on top of kwolf/block at the behest of mreitz

V3:
 - Rebased for 4.1+; now based on main branch.

V2:
 - Added all of the other python tests I missed to use script_initialize
 - Refactored the common setup as per Ehabkost's suggestion
 - Added protocol arguments to common initialization,
   but this isn't strictly required.

John Snow (11):
  iotests: do a light delinting
  iotests: don't use 'format' for drive_add
  iotests: ignore import warnings from pylint
  iotests: replace mutable list default args
  iotests: add pylintrc file
  iotests: drop Python 3.4 compatibility code
  iotests: limit line length to 79 chars
  iotests: add script_initialize
  iotest 258: use script_main
  iotests: Mark verify functions as private
  iotests: use python logging for iotests.log()

 tests/qemu-iotests/030        |   4 +-
 tests/qemu-iotests/055        |   3 +-
 tests/qemu-iotests/149        |   3 +-
 tests/qemu-iotests/155        |   2 +-
 tests/qemu-iotests/194        |   4 +-
 tests/qemu-iotests/202        |   4 +-
 tests/qemu-iotests/203        |   4 +-
 tests/qemu-iotests/206        |   2 +-
 tests/qemu-iotests/207        |   6 +-
 tests/qemu-iotests/208        |   2 +-
 tests/qemu-iotests/209        |   2 +-
 tests/qemu-iotests/210        |   6 +-
 tests/qemu-iotests/211        |   6 +-
 tests/qemu-iotests/212        |   6 +-
 tests/qemu-iotests/213        |   6 +-
 tests/qemu-iotests/216        |   4 +-
 tests/qemu-iotests/218        |   2 +-
 tests/qemu-iotests/219        |   2 +-
 tests/qemu-iotests/222        |   7 +-
 tests/qemu-iotests/224        |   4 +-
 tests/qemu-iotests/228        |   6 +-
 tests/qemu-iotests/234        |   4 +-
 tests/qemu-iotests/235        |   4 +-
 tests/qemu-iotests/236        |   2 +-
 tests/qemu-iotests/237        |   2 +-
 tests/qemu-iotests/238        |   2 +
 tests/qemu-iotests/242        |   2 +-
 tests/qemu-iotests/245        |   1 +
 tests/qemu-iotests/245.out    |  24 +--
 tests/qemu-iotests/246        |   2 +-
 tests/qemu-iotests/248        |   2 +-
 tests/qemu-iotests/254        |   2 +-
 tests/qemu-iotests/255        |   2 +-
 tests/qemu-iotests/256        |   2 +-
 tests/qemu-iotests/258        |  10 +-
 tests/qemu-iotests/260        |   4 +-
 tests/qemu-iotests/262        |   4 +-
 tests/qemu-iotests/264        |   4 +-
 tests/qemu-iotests/277        |   2 +
 tests/qemu-iotests/280        |   8 +-
 tests/qemu-iotests/283        |   4 +-
 tests/qemu-iotests/iotests.py | 312 ++++++++++++++++++++--------------
 tests/qemu-iotests/pylintrc   |  26 +++
 43 files changed, 307 insertions(+), 203 deletions(-)
 create mode 100644 tests/qemu-iotests/pylintrc

-- 
2.21.1



^ permalink raw reply	[flat|nested] 26+ messages in thread

* [PATCH v8 01/11] iotests: do a light delinting
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
@ 2020-03-17  0:40 ` John Snow
  2020-03-24 13:56   ` Max Reitz
  2020-03-17  0:40 ` [PATCH v8 02/11] iotests: don't use 'format' for drive_add John Snow
                   ` (9 subsequent siblings)
  10 siblings, 1 reply; 26+ messages in thread
From: John Snow @ 2020-03-17  0:40 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

This doesn't fix everything in here, but it does help clean up the
pylint report considerably.

This should be 100% style changes only; the intent is to make pylint
more useful by working on establishing a baseline for iotests that we
can gate against in the future.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 tests/qemu-iotests/iotests.py | 83 ++++++++++++++++++-----------------
 1 file changed, 43 insertions(+), 40 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 23043baa26..c6d9ae130d 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -16,11 +16,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-import errno
 import os
 import re
 import subprocess
-import string
 import unittest
 import sys
 import struct
@@ -34,7 +32,7 @@
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
 from qemu import qtest
 
-assert sys.version_info >= (3,6)
+assert sys.version_info >= (3, 6)
 
 # This will not work if arguments contain spaces but is necessary if we
 # want to support the override options that ./check supports.
@@ -138,11 +136,11 @@ def qemu_img_log(*args):
     return result
 
 def img_info_log(filename, filter_path=None, imgopts=False, extra_args=[]):
-    args = [ 'info' ]
+    args = ['info']
     if imgopts:
         args.append('--image-opts')
     else:
-        args += [ '-f', imgfmt ]
+        args += ['-f', imgfmt]
     args += extra_args
     args.append(filename)
 
@@ -221,7 +219,7 @@ def cmd(self, cmd):
         # quit command is in close(), '\n' is added automatically
         assert '\n' not in cmd
         cmd = cmd.strip()
-        assert cmd != 'q' and cmd != 'quit'
+        assert cmd not in ('q', 'quit')
         self._p.stdin.write(cmd + '\n')
         self._p.stdin.flush()
         return self._read_output()
@@ -243,10 +241,8 @@ def qemu_nbd_early_pipe(*args):
         sys.stderr.write('qemu-nbd received signal %i: %s\n' %
                          (-exitcode,
                           ' '.join(qemu_nbd_args + ['--fork'] + list(args))))
-    if exitcode == 0:
-        return exitcode, ''
-    else:
-        return exitcode, subp.communicate()[0]
+
+    return exitcode, subp.communicate()[0] if exitcode else ''
 
 def qemu_nbd_popen(*args):
     '''Run qemu-nbd in daemon mode and return the parent's exit code'''
@@ -310,7 +306,7 @@ def filter_qmp(qmsg, filter_fn):
         items = qmsg.items()
 
     for k, v in items:
-        if isinstance(v, list) or isinstance(v, dict):
+        if isinstance(v, (dict, list)):
             qmsg[k] = filter_qmp(v, filter_fn)
         else:
             qmsg[k] = filter_fn(k, v)
@@ -321,7 +317,7 @@ def filter_testfiles(msg):
     return msg.replace(prefix, 'TEST_DIR/PID-')
 
 def filter_qmp_testfiles(qmsg):
-    def _filter(key, value):
+    def _filter(_key, value):
         if is_str(value):
             return filter_testfiles(value)
         return value
@@ -347,7 +343,7 @@ def filter_imgfmt(msg):
     return msg.replace(imgfmt, 'IMGFMT')
 
 def filter_qmp_imgfmt(qmsg):
-    def _filter(key, value):
+    def _filter(_key, value):
         if is_str(value):
             return filter_imgfmt(value)
         return value
@@ -358,7 +354,7 @@ def log(msg, filters=[], indent=None):
     If indent is provided, JSON serializable messages are pretty-printed.'''
     for flt in filters:
         msg = flt(msg)
-    if isinstance(msg, dict) or isinstance(msg, list):
+    if isinstance(msg, (dict, list)):
         # Python < 3.4 needs to know not to add whitespace when pretty-printing:
         separators = (', ', ': ') if indent is None else (',', ': ')
         # Don't sort if it's already sorted
@@ -369,14 +365,14 @@ def log(msg, filters=[], indent=None):
         print(msg)
 
 class Timeout:
-    def __init__(self, seconds, errmsg = "Timeout"):
+    def __init__(self, seconds, errmsg="Timeout"):
         self.seconds = seconds
         self.errmsg = errmsg
     def __enter__(self):
         signal.signal(signal.SIGALRM, self.timeout)
         signal.setitimer(signal.ITIMER_REAL, self.seconds)
         return self
-    def __exit__(self, type, value, traceback):
+    def __exit__(self, exc_type, value, traceback):
         signal.setitimer(signal.ITIMER_REAL, 0)
         return False
     def timeout(self, signum, frame):
@@ -385,7 +381,7 @@ def timeout(self, signum, frame):
 def file_pattern(name):
     return "{0}-{1}".format(os.getpid(), name)
 
-class FilePaths(object):
+class FilePaths:
     """
     FilePaths is an auto-generated filename that cleans itself up.
 
@@ -532,11 +528,11 @@ def pause_drive(self, drive, event=None):
             self.pause_drive(drive, "write_aio")
             return
         self.qmp('human-monitor-command',
-                    command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
+                 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
 
     def resume_drive(self, drive):
         self.qmp('human-monitor-command',
-                    command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
+                 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
 
     def hmp_qemu_io(self, drive, cmd):
         '''Write to a given drive using an HMP command'''
@@ -547,8 +543,8 @@ def flatten_qmp_object(self, obj, output=None, basestr=''):
         if output is None:
             output = dict()
         if isinstance(obj, list):
-            for i in range(len(obj)):
-                self.flatten_qmp_object(obj[i], output, basestr + str(i) + '.')
+            for i, atom in enumerate(obj):
+                self.flatten_qmp_object(atom, output, basestr + str(i) + '.')
         elif isinstance(obj, dict):
             for key in obj:
                 self.flatten_qmp_object(obj[key], output, basestr + key + '.')
@@ -706,9 +702,7 @@ def get_bitmap(self, node_name, bitmap_name, recording=None, bitmaps=None):
 
         for bitmap in bitmaps[node_name]:
             if bitmap.get('name', '') == bitmap_name:
-                if recording is None:
-                    return bitmap
-                elif bitmap.get('recording') == recording:
+                if recording is None or bitmap.get('recording') == recording:
                     return bitmap
         return None
 
@@ -759,12 +753,13 @@ def assert_block_path(self, root, path, expected_node, graph=None):
             assert node is not None, 'Cannot follow path %s%s' % (root, path)
 
             try:
-                node_id = next(edge['child'] for edge in graph['edges'] \
-                                             if edge['parent'] == node['id'] and
-                                                edge['name'] == child_name)
+                node_id = next(edge['child'] for edge in graph['edges']
+                               if (edge['parent'] == node['id'] and
+                                   edge['name'] == child_name))
+
+                node = next(node for node in graph['nodes']
+                            if node['id'] == node_id)
 
-                node = next(node for node in graph['nodes'] \
-                                 if node['id'] == node_id)
             except StopIteration:
                 node = None
 
@@ -782,6 +777,12 @@ def assert_block_path(self, root, path, expected_node, graph=None):
 class QMPTestCase(unittest.TestCase):
     '''Abstract base class for QMP test cases'''
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        # Many users of this class set a VM property we rely on heavily
+        # in the methods below.
+        self.vm = None
+
     def dictpath(self, d, path):
         '''Traverse a path in a nested dict'''
         for component in path.split('/'):
@@ -827,7 +828,7 @@ def assert_qmp(self, d, path, value):
         else:
             self.assertEqual(result, value,
                              '"%s" is "%s", expected "%s"'
-                                 % (path, str(result), str(value)))
+                             % (path, str(result), str(value)))
 
     def assert_no_active_block_jobs(self):
         result = self.vm.qmp('query-block-jobs')
@@ -837,15 +838,15 @@ def assert_has_block_node(self, node_name=None, file_name=None):
         """Issue a query-named-block-nodes and assert node_name and/or
         file_name is present in the result"""
         def check_equal_or_none(a, b):
-            return a == None or b == None or a == b
+            return a is None or b is None or a == b
         assert node_name or file_name
         result = self.vm.qmp('query-named-block-nodes')
         for x in result["return"]:
             if check_equal_or_none(x.get("node-name"), node_name) and \
                     check_equal_or_none(x.get("file"), file_name):
                 return
-        self.assertTrue(False, "Cannot find %s %s in result:\n%s" % \
-                (node_name, file_name, result))
+        self.fail("Cannot find %s %s in result:\n%s" %
+                  (node_name, file_name, result))
 
     def assert_json_filename_equal(self, json_filename, reference):
         '''Asserts that the given filename is a json: filename and that its
@@ -894,13 +895,13 @@ def wait_until_completed(self, drive='drive0', check_offset=True, wait=60.0,
                         self.assert_qmp(event, 'data/error', error)
                     self.assert_no_active_block_jobs()
                     return event
-                elif event['event'] == 'JOB_STATUS_CHANGE':
+                if event['event'] == 'JOB_STATUS_CHANGE':
                     self.assert_qmp(event, 'data/id', drive)
 
     def wait_ready(self, drive='drive0'):
-        '''Wait until a block job BLOCK_JOB_READY event'''
-        f = {'data': {'type': 'mirror', 'device': drive } }
-        event = self.vm.event_wait(name='BLOCK_JOB_READY', match=f)
+        """Wait until a BLOCK_JOB_READY event, and return the event."""
+        f = {'data': {'type': 'mirror', 'device': drive}}
+        return self.vm.event_wait(name='BLOCK_JOB_READY', match=f)
 
     def wait_ready_and_cancel(self, drive='drive0'):
         self.wait_ready(drive=drive)
@@ -929,7 +930,7 @@ def pause_wait(self, job_id='job0'):
                 for job in result['return']:
                     if job['device'] == job_id:
                         found = True
-                        if job['paused'] == True and job['busy'] == False:
+                        if job['paused'] and not job['busy']:
                             return job
                         break
                 assert found
@@ -1026,8 +1027,8 @@ def qemu_pipe(*args):
                             universal_newlines=True)
     exitcode = subp.wait()
     if exitcode < 0:
-        sys.stderr.write('qemu received signal %i: %s\n' % (-exitcode,
-                         ' '.join(args)))
+        sys.stderr.write('qemu received signal %i: %s\n' %
+                         (-exitcode, ' '.join(args)))
     return subp.communicate()[0]
 
 def supported_formats(read_only=False):
@@ -1059,6 +1060,7 @@ def func_wrapper(test_case: QMPTestCase, *args, **kwargs):
             if usf_list:
                 test_case.case_skip('{}: formats {} are not whitelisted'.format(
                     test_case, usf_list))
+                return None
             else:
                 return func(test_case, *args, **kwargs)
         return func_wrapper
@@ -1070,6 +1072,7 @@ def skip_if_user_is_root(func):
     def func_wrapper(*args, **kwargs):
         if os.getuid() == 0:
             case_notrun('{}: cannot be run as root'.format(args[0]))
+            return None
         else:
             return func(*args, **kwargs)
     return func_wrapper
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 02/11] iotests: don't use 'format' for drive_add
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
  2020-03-17  0:40 ` [PATCH v8 01/11] iotests: do a light delinting John Snow
@ 2020-03-17  0:40 ` John Snow
  2020-03-17  0:40 ` [PATCH v8 03/11] iotests: ignore import warnings from pylint John Snow
                   ` (8 subsequent siblings)
  10 siblings, 0 replies; 26+ messages in thread
From: John Snow @ 2020-03-17  0:40 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

It shadows (with a different type) the built-in format.
Use something else.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/055        | 3 ++-
 tests/qemu-iotests/iotests.py | 6 +++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/055 b/tests/qemu-iotests/055
index 82b9f5f47d..4175fff5e4 100755
--- a/tests/qemu-iotests/055
+++ b/tests/qemu-iotests/055
@@ -469,7 +469,8 @@ class TestDriveCompression(iotests.QMPTestCase):
         qemu_img('create', '-f', fmt, blockdev_target_img,
                  str(TestDriveCompression.image_len), *args)
         if attach_target:
-            self.vm.add_drive(blockdev_target_img, format=fmt, interface="none")
+            self.vm.add_drive(blockdev_target_img,
+                              img_format=fmt, interface="none")
 
         self.vm.launch()
 
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index c6d9ae130d..a6b2889932 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -482,21 +482,21 @@ def add_drive_raw(self, opts):
         self._args.append(opts)
         return self
 
-    def add_drive(self, path, opts='', interface='virtio', format=imgfmt):
+    def add_drive(self, path, opts='', interface='virtio', img_format=imgfmt):
         '''Add a virtio-blk drive to the VM'''
         options = ['if=%s' % interface,
                    'id=drive%d' % self._num_drives]
 
         if path is not None:
             options.append('file=%s' % path)
-            options.append('format=%s' % format)
+            options.append('format=%s' % img_format)
             options.append('cache=%s' % cachemode)
             options.append('aio=%s' % aiomode)
 
         if opts:
             options.append(opts)
 
-        if format == 'luks' and 'key-secret' not in opts:
+        if img_format == 'luks' and 'key-secret' not in opts:
             # default luks support
             if luks_default_secret_object not in self._args:
                 self.add_object(luks_default_secret_object)
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 03/11] iotests: ignore import warnings from pylint
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
  2020-03-17  0:40 ` [PATCH v8 01/11] iotests: do a light delinting John Snow
  2020-03-17  0:40 ` [PATCH v8 02/11] iotests: don't use 'format' for drive_add John Snow
@ 2020-03-17  0:40 ` John Snow
  2020-03-17 10:38   ` Philippe Mathieu-Daudé
  2020-03-24 14:02   ` Max Reitz
  2020-03-17  0:40 ` [PATCH v8 04/11] iotests: replace mutable list default args John Snow
                   ` (7 subsequent siblings)
  10 siblings, 2 replies; 26+ messages in thread
From: John Snow @ 2020-03-17  0:40 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

The right way to solve this is to come up with a virtual environment
infrastructure that sets all the paths correctly, and/or to create
installable python modules that can be imported normally.

That's hard, so just silence this error for now.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/iotests.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index a6b2889932..cb9c2cd05d 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -29,6 +29,7 @@
 import io
 from collections import OrderedDict
 
+# pylint: disable=import-error, wrong-import-position
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
 from qemu import qtest
 
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 04/11] iotests: replace mutable list default args
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (2 preceding siblings ...)
  2020-03-17  0:40 ` [PATCH v8 03/11] iotests: ignore import warnings from pylint John Snow
@ 2020-03-17  0:40 ` John Snow
  2020-03-24 14:35   ` Max Reitz
  2020-03-17  0:40 ` [PATCH v8 05/11] iotests: add pylintrc file John Snow
                   ` (6 subsequent siblings)
  10 siblings, 1 reply; 26+ messages in thread
From: John Snow @ 2020-03-17  0:40 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

It's bad hygiene: if we modify this list, it will be modified across all
invocations.

(Remaining bad usages are fixed in a subsequent patch which changes the
function signature anyway.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 tests/qemu-iotests/iotests.py | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index cb9c2cd05d..7cd74e7cb1 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -136,7 +136,7 @@ def qemu_img_log(*args):
     log(result, filters=[filter_testfiles])
     return result
 
-def img_info_log(filename, filter_path=None, imgopts=False, extra_args=[]):
+def img_info_log(filename, filter_path=None, imgopts=False, extra_args=()):
     args = ['info']
     if imgopts:
         args.append('--image-opts')
@@ -350,7 +350,7 @@ def _filter(_key, value):
         return value
     return filter_qmp(qmsg, _filter)
 
-def log(msg, filters=[], indent=None):
+def log(msg, filters=(), indent=None):
     '''Logs either a string message or a JSON serializable message (like QMP).
     If indent is provided, JSON serializable messages are pretty-printed.'''
     for flt in filters:
@@ -566,7 +566,7 @@ def get_qmp_events_filtered(self, wait=60.0):
             result.append(filter_qmp_event(ev))
         return result
 
-    def qmp_log(self, cmd, filters=[], indent=None, **kwargs):
+    def qmp_log(self, cmd, filters=(), indent=None, **kwargs):
         full_cmd = OrderedDict((
             ("execute", cmd),
             ("arguments", ordered_qmp(kwargs))
@@ -970,7 +970,7 @@ def case_notrun(reason):
     open('%s/%s.casenotrun' % (output_dir, seq), 'a').write(
         '    [case not run] ' + reason + '\n')
 
-def verify_image_format(supported_fmts=[], unsupported_fmts=[]):
+def verify_image_format(supported_fmts=(), unsupported_fmts=()):
     assert not (supported_fmts and unsupported_fmts)
 
     if 'generic' in supported_fmts and \
@@ -984,7 +984,7 @@ def verify_image_format(supported_fmts=[], unsupported_fmts=[]):
     if not_sup or (imgfmt in unsupported_fmts):
         notrun('not suitable for this image format: %s' % imgfmt)
 
-def verify_protocol(supported=[], unsupported=[]):
+def verify_protocol(supported=(), unsupported=()):
     assert not (supported and unsupported)
 
     if 'generic' in supported:
@@ -1003,11 +1003,11 @@ def verify_platform(supported=None, unsupported=None):
         if not any((sys.platform.startswith(x) for x in supported)):
             notrun('not suitable for this OS: %s' % sys.platform)
 
-def verify_cache_mode(supported_cache_modes=[]):
+def verify_cache_mode(supported_cache_modes=()):
     if supported_cache_modes and (cachemode not in supported_cache_modes):
         notrun('not suitable for this cache mode: %s' % cachemode)
 
-def verify_aio_mode(supported_aio_modes=[]):
+def verify_aio_mode(supported_aio_modes=()):
     if supported_aio_modes and (aiomode not in supported_aio_modes):
         notrun('not suitable for this aio mode: %s' % aiomode)
 
@@ -1047,7 +1047,7 @@ def supported_formats(read_only=False):
 
     return supported_formats.formats[read_only]
 
-def skip_if_unsupported(required_formats=[], read_only=False):
+def skip_if_unsupported(required_formats=(), read_only=False):
     '''Skip Test Decorator
        Runs the test if all the required formats are whitelisted'''
     def skip_test_decorator(func):
@@ -1098,11 +1098,11 @@ def execute_unittest(output, verbosity, debug):
             sys.stderr.write(out)
 
 def execute_test(test_function=None,
-                 supported_fmts=[],
+                 supported_fmts=(),
                  supported_platforms=None,
-                 supported_cache_modes=[], supported_aio_modes={},
-                 unsupported_fmts=[], supported_protocols=[],
-                 unsupported_protocols=[]):
+                 supported_cache_modes=(), supported_aio_modes=(),
+                 unsupported_fmts=(), supported_protocols=(),
+                 unsupported_protocols=()):
     """Run either unittest or script-style tests."""
 
     # We are using TEST_DIR and QEMU_DEFAULT_MACHINE as proxies to
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 05/11] iotests: add pylintrc file
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (3 preceding siblings ...)
  2020-03-17  0:40 ` [PATCH v8 04/11] iotests: replace mutable list default args John Snow
@ 2020-03-17  0:40 ` John Snow
  2020-03-24 14:47   ` Max Reitz
  2020-03-17  0:41 ` [PATCH v8 06/11] iotests: drop Python 3.4 compatibility code John Snow
                   ` (5 subsequent siblings)
  10 siblings, 1 reply; 26+ messages in thread
From: John Snow @ 2020-03-17  0:40 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

This allows others to get repeatable results with pylint. If you run
`pylint iotests.py`, you should see a 100% pass.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/pylintrc | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 tests/qemu-iotests/pylintrc

diff --git a/tests/qemu-iotests/pylintrc b/tests/qemu-iotests/pylintrc
new file mode 100644
index 0000000000..8720b6a0de
--- /dev/null
+++ b/tests/qemu-iotests/pylintrc
@@ -0,0 +1,22 @@
+[MESSAGES CONTROL]
+
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifiers separated by comma (,) or put this
+# option multiple times (only on the command line, not in the configuration
+# file where it should appear only once). You can also use "--disable=all" to
+# disable everything first and then reenable specific checks. For example, if
+# you want to run only the similarities checker, you can use "--disable=all
+# --enable=similarities". If you want to run only the classes checker, but have
+# no Warning level messages displayed, use "--disable=all --enable=classes
+# --disable=W".
+disable=invalid-name,
+        no-else-return,
+        too-many-lines,
+        too-few-public-methods,
+        too-many-arguments,
+        too-many-locals,
+        too-many-branches,
+        too-many-public-methods,
+        # These are temporary, and should be removed:
+        missing-docstring,
+        line-too-long,
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 06/11] iotests: drop Python 3.4 compatibility code
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (4 preceding siblings ...)
  2020-03-17  0:40 ` [PATCH v8 05/11] iotests: add pylintrc file John Snow
@ 2020-03-17  0:41 ` John Snow
  2020-03-24 14:54   ` Max Reitz
  2020-03-17  0:41 ` [PATCH v8 07/11] iotests: limit line length to 79 chars John Snow
                   ` (4 subsequent siblings)
  10 siblings, 1 reply; 26+ messages in thread
From: John Snow @ 2020-03-17  0:41 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

We no longer need to accommodate 3.4, drop this code.
(Also, the line is over 79 characters, so drop it.)

Touch up the docstring a little bit while we're here.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/iotests.py | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 7cd74e7cb1..3d90fb157d 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -22,6 +22,7 @@
 import unittest
 import sys
 import struct
+from typing import Optional
 import json
 import signal
 import logging
@@ -350,18 +351,17 @@ def _filter(_key, value):
         return value
     return filter_qmp(qmsg, _filter)
 
-def log(msg, filters=(), indent=None):
-    '''Logs either a string message or a JSON serializable message (like QMP).
-    If indent is provided, JSON serializable messages are pretty-printed.'''
+def log(msg, filters=(), indent: Optional[int] = None) -> None:
+    """
+    Logs either a string message or a JSON serializable message (like QMP).
+    If indent is provided, JSON serializable messages are pretty-printed.
+    """
     for flt in filters:
         msg = flt(msg)
     if isinstance(msg, (dict, list)):
-        # Python < 3.4 needs to know not to add whitespace when pretty-printing:
-        separators = (', ', ': ') if indent is None else (',', ': ')
         # Don't sort if it's already sorted
         do_sort = not isinstance(msg, OrderedDict)
-        print(json.dumps(msg, sort_keys=do_sort,
-                         indent=indent, separators=separators))
+        print(json.dumps(msg, sort_keys=do_sort, indent=indent))
     else:
         print(msg)
 
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 07/11] iotests: limit line length to 79 chars
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (5 preceding siblings ...)
  2020-03-17  0:41 ` [PATCH v8 06/11] iotests: drop Python 3.4 compatibility code John Snow
@ 2020-03-17  0:41 ` John Snow
  2020-03-17 10:36   ` Philippe Mathieu-Daudé
  2020-03-24 15:02   ` Max Reitz
  2020-03-17  0:41 ` [PATCH v8 08/11] iotests: add script_initialize John Snow
                   ` (3 subsequent siblings)
  10 siblings, 2 replies; 26+ messages in thread
From: John Snow @ 2020-03-17  0:41 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

79 is the PEP8 recommendation. This recommendation works well for
reading patch diffs in TUI email clients.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/iotests.py | 64 +++++++++++++++++++++++------------
 tests/qemu-iotests/pylintrc   |  6 +++-
 2 files changed, 47 insertions(+), 23 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 3d90fb157d..75fd697d77 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -77,9 +77,11 @@
 def qemu_img(*args):
     '''Run qemu-img and return the exit code'''
     devnull = open('/dev/null', 'r+')
-    exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
+    exitcode = subprocess.call(qemu_img_args + list(args),
+                               stdin=devnull, stdout=devnull)
     if exitcode < 0:
-        sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
+        sys.stderr.write('qemu-img received signal %i: %s\n'
+                         % (-exitcode, ' '.join(qemu_img_args + list(args))))
     return exitcode
 
 def ordered_qmp(qmsg, conv_keys=True):
@@ -118,7 +120,8 @@ def qemu_img_verbose(*args):
     '''Run qemu-img without suppressing its output and return the exit code'''
     exitcode = subprocess.call(qemu_img_args + list(args))
     if exitcode < 0:
-        sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
+        sys.stderr.write('qemu-img received signal %i: %s\n'
+                         % (-exitcode, ' '.join(qemu_img_args + list(args))))
     return exitcode
 
 def qemu_img_pipe(*args):
@@ -129,7 +132,8 @@ def qemu_img_pipe(*args):
                             universal_newlines=True)
     exitcode = subp.wait()
     if exitcode < 0:
-        sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
+        sys.stderr.write('qemu-img received signal %i: %s\n'
+                         % (-exitcode, ' '.join(qemu_img_args + list(args))))
     return subp.communicate()[0]
 
 def qemu_img_log(*args):
@@ -159,7 +163,8 @@ def qemu_io(*args):
                             universal_newlines=True)
     exitcode = subp.wait()
     if exitcode < 0:
-        sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args)))
+        sys.stderr.write('qemu-io received signal %i: %s\n'
+                         % (-exitcode, ' '.join(args)))
     return subp.communicate()[0]
 
 def qemu_io_log(*args):
@@ -281,10 +286,13 @@ def filter_test_dir(msg):
 def filter_win32(msg):
     return win32_re.sub("", msg)
 
-qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* \([0-9\/.inf]* [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)")
+qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* "
+                        r"\([0-9\/.inf]* [EPTGMKiBbytes]*\/sec "
+                        r"and [0-9\/.inf]* ops\/sec\)")
 def filter_qemu_io(msg):
     msg = filter_win32(msg)
-    return qemu_io_re.sub("X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)", msg)
+    return qemu_io_re.sub("X ops; XX:XX:XX.X "
+                          "(XXX YYY/sec and XXX ops/sec)", msg)
 
 chown_re = re.compile(r"chown [0-9]+:[0-9]+")
 def filter_chown(msg):
@@ -336,7 +344,9 @@ def filter_img_info(output, filename):
         line = line.replace(filename, 'TEST_IMG') \
                    .replace(imgfmt, 'IMGFMT')
         line = re.sub('iters: [0-9]+', 'iters: XXX', line)
-        line = re.sub('uuid: [-a-f0-9]+', 'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', line)
+        line = re.sub('uuid: [-a-f0-9]+',
+                      'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX',
+                      line)
         line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line)
         lines.append(line)
     return '\n'.join(lines)
@@ -529,11 +539,13 @@ def pause_drive(self, drive, event=None):
             self.pause_drive(drive, "write_aio")
             return
         self.qmp('human-monitor-command',
-                 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
+                 command_line='qemu-io %s "break %s bp_%s"'
+                 % (drive, event, drive))
 
     def resume_drive(self, drive):
         self.qmp('human-monitor-command',
-                 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
+                 command_line='qemu-io %s "remove_break bp_%s"'
+                 % (drive, drive))
 
     def hmp_qemu_io(self, drive, cmd):
         '''Write to a given drive using an HMP command'''
@@ -793,16 +805,18 @@ def dictpath(self, d, path):
                 idx = int(idx)
 
             if not isinstance(d, dict) or component not in d:
-                self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
+                self.fail(f'failed path traversal for "{path}" in "{d}"')
             d = d[component]
 
             if m:
                 if not isinstance(d, list):
-                    self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
+                    self.fail(f'path component "{component}" in "{path}" '
+                              f'is not a list in "{d}"')
                 try:
                     d = d[idx]
                 except IndexError:
-                    self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
+                    self.fail(f'invalid index "{idx}" in path "{path}" '
+                              f'in "{d}"')
         return d
 
     def assert_qmp_absent(self, d, path):
@@ -853,10 +867,13 @@ def assert_json_filename_equal(self, json_filename, reference):
         '''Asserts that the given filename is a json: filename and that its
            content is equal to the given reference object'''
         self.assertEqual(json_filename[:5], 'json:')
-        self.assertEqual(self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
-                         self.vm.flatten_qmp_object(reference))
+        self.assertEqual(
+            self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
+            self.vm.flatten_qmp_object(reference)
+        )
 
-    def cancel_and_wait(self, drive='drive0', force=False, resume=False, wait=60.0):
+    def cancel_and_wait(self, drive='drive0', force=False,
+                        resume=False, wait=60.0):
         '''Cancel a block job and wait for it to finish, returning the event'''
         result = self.vm.qmp('block-job-cancel', device=drive, force=force)
         self.assert_qmp(result, 'return', {})
@@ -880,8 +897,8 @@ def cancel_and_wait(self, drive='drive0', force=False, resume=False, wait=60.0):
         self.assert_no_active_block_jobs()
         return result
 
-    def wait_until_completed(self, drive='drive0', check_offset=True, wait=60.0,
-                             error=None):
+    def wait_until_completed(self, drive='drive0', check_offset=True,
+                             wait=60.0, error=None):
         '''Wait for a block job to finish, returning the event'''
         while True:
             for event in self.vm.get_qmp_events(wait=wait):
@@ -1020,8 +1037,11 @@ def verify_quorum():
         notrun('quorum support missing')
 
 def qemu_pipe(*args):
-    '''Run qemu with an option to print something and exit (e.g. a help option),
-    and return its output'''
+    """
+    Run qemu with an option to print something and exit (e.g. a help option).
+
+    :return: QEMU's stdout output.
+    """
     args = [qemu_prog] + qemu_opts + list(args)
     subp = subprocess.Popen(args, stdout=subprocess.PIPE,
                             stderr=subprocess.STDOUT,
@@ -1059,8 +1079,8 @@ def func_wrapper(test_case: QMPTestCase, *args, **kwargs):
 
             usf_list = list(set(fmts) - set(supported_formats(read_only)))
             if usf_list:
-                test_case.case_skip('{}: formats {} are not whitelisted'.format(
-                    test_case, usf_list))
+                msg = f'{test_case}: formats {usf_list} are not whitelisted'
+                test_case.case_skip(msg)
                 return None
             else:
                 return func(test_case, *args, **kwargs)
diff --git a/tests/qemu-iotests/pylintrc b/tests/qemu-iotests/pylintrc
index 8720b6a0de..8d02f00607 100644
--- a/tests/qemu-iotests/pylintrc
+++ b/tests/qemu-iotests/pylintrc
@@ -19,4 +19,8 @@ disable=invalid-name,
         too-many-public-methods,
         # These are temporary, and should be removed:
         missing-docstring,
-        line-too-long,
+
+[FORMAT]
+
+# Maximum number of characters on a single line.
+max-line-length=79
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 08/11] iotests: add script_initialize
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (6 preceding siblings ...)
  2020-03-17  0:41 ` [PATCH v8 07/11] iotests: limit line length to 79 chars John Snow
@ 2020-03-17  0:41 ` John Snow
  2020-03-17  0:41 ` [PATCH v8 09/11] iotest 258: use script_main John Snow
                   ` (2 subsequent siblings)
  10 siblings, 0 replies; 26+ messages in thread
From: John Snow @ 2020-03-17  0:41 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

Like script_main, but doesn't require a single point of entry.
Replace all existing initialization sections with this drop-in replacement.

This brings debug support to all existing script-style iotests.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/149        |  3 +-
 tests/qemu-iotests/194        |  4 +-
 tests/qemu-iotests/202        |  4 +-
 tests/qemu-iotests/203        |  4 +-
 tests/qemu-iotests/206        |  2 +-
 tests/qemu-iotests/207        |  6 ++-
 tests/qemu-iotests/208        |  2 +-
 tests/qemu-iotests/209        |  2 +-
 tests/qemu-iotests/210        |  6 ++-
 tests/qemu-iotests/211        |  6 ++-
 tests/qemu-iotests/212        |  6 ++-
 tests/qemu-iotests/213        |  6 ++-
 tests/qemu-iotests/216        |  4 +-
 tests/qemu-iotests/218        |  2 +-
 tests/qemu-iotests/219        |  2 +-
 tests/qemu-iotests/222        |  7 ++--
 tests/qemu-iotests/224        |  4 +-
 tests/qemu-iotests/228        |  6 ++-
 tests/qemu-iotests/234        |  4 +-
 tests/qemu-iotests/235        |  4 +-
 tests/qemu-iotests/236        |  2 +-
 tests/qemu-iotests/237        |  2 +-
 tests/qemu-iotests/238        |  2 +
 tests/qemu-iotests/242        |  2 +-
 tests/qemu-iotests/246        |  2 +-
 tests/qemu-iotests/248        |  2 +-
 tests/qemu-iotests/254        |  2 +-
 tests/qemu-iotests/255        |  2 +-
 tests/qemu-iotests/256        |  2 +-
 tests/qemu-iotests/258        |  7 ++--
 tests/qemu-iotests/260        |  4 +-
 tests/qemu-iotests/262        |  4 +-
 tests/qemu-iotests/264        |  4 +-
 tests/qemu-iotests/277        |  2 +
 tests/qemu-iotests/280        |  8 ++--
 tests/qemu-iotests/283        |  4 +-
 tests/qemu-iotests/iotests.py | 73 +++++++++++++++++++++++------------
 37 files changed, 128 insertions(+), 80 deletions(-)

diff --git a/tests/qemu-iotests/149 b/tests/qemu-iotests/149
index b4a21bf7b7..852768f80a 100755
--- a/tests/qemu-iotests/149
+++ b/tests/qemu-iotests/149
@@ -382,8 +382,7 @@ def test_once(config, qemu_img=False):
 
 
 # Obviously we only work with the luks image format
-iotests.verify_image_format(supported_fmts=['luks'])
-iotests.verify_platform()
+iotests.script_initialize(supported_fmts=['luks'])
 
 # We need sudo in order to run cryptsetup to create
 # dm-crypt devices. This is safe to use on any
diff --git a/tests/qemu-iotests/194 b/tests/qemu-iotests/194
index 9dc1bd3510..8b1f720af4 100755
--- a/tests/qemu-iotests/194
+++ b/tests/qemu-iotests/194
@@ -21,8 +21,8 @@
 
 import iotests
 
-iotests.verify_image_format(supported_fmts=['qcow2', 'qed', 'raw'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(supported_fmts=['qcow2', 'qed', 'raw'],
+                          supported_platforms=['linux'])
 
 with iotests.FilePath('source.img') as source_img_path, \
      iotests.FilePath('dest.img') as dest_img_path, \
diff --git a/tests/qemu-iotests/202 b/tests/qemu-iotests/202
index 920a8683ef..e3900a44d1 100755
--- a/tests/qemu-iotests/202
+++ b/tests/qemu-iotests/202
@@ -24,8 +24,8 @@
 
 import iotests
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          supported_platforms=['linux'])
 
 with iotests.FilePath('disk0.img') as disk0_img_path, \
      iotests.FilePath('disk1.img') as disk1_img_path, \
diff --git a/tests/qemu-iotests/203 b/tests/qemu-iotests/203
index 49eff5d405..4b4bd3307d 100755
--- a/tests/qemu-iotests/203
+++ b/tests/qemu-iotests/203
@@ -24,8 +24,8 @@
 
 import iotests
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          supported_platforms=['linux'])
 
 with iotests.FilePath('disk0.img') as disk0_img_path, \
      iotests.FilePath('disk1.img') as disk1_img_path, \
diff --git a/tests/qemu-iotests/206 b/tests/qemu-iotests/206
index e2b50ae24d..f42432a838 100755
--- a/tests/qemu-iotests/206
+++ b/tests/qemu-iotests/206
@@ -23,7 +23,7 @@
 import iotests
 from iotests import imgfmt
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 
 with iotests.FilePath('t.qcow2') as disk_path, \
      iotests.FilePath('t.qcow2.base') as backing_path, \
diff --git a/tests/qemu-iotests/207 b/tests/qemu-iotests/207
index 3d9c1208ca..a6621410da 100755
--- a/tests/qemu-iotests/207
+++ b/tests/qemu-iotests/207
@@ -24,8 +24,10 @@ import iotests
 import subprocess
 import re
 
-iotests.verify_image_format(supported_fmts=['raw'])
-iotests.verify_protocol(supported=['ssh'])
+iotests.script_initialize(
+    supported_fmts=['raw'],
+    supported_protocols=['ssh'],
+)
 
 def filter_hash(qmsg):
     def _filter(key, value):
diff --git a/tests/qemu-iotests/208 b/tests/qemu-iotests/208
index 1c3fc8c7fd..6cb642f821 100755
--- a/tests/qemu-iotests/208
+++ b/tests/qemu-iotests/208
@@ -22,7 +22,7 @@
 
 import iotests
 
-iotests.verify_image_format(supported_fmts=['generic'])
+iotests.script_initialize(supported_fmts=['generic'])
 
 with iotests.FilePath('disk.img') as disk_img_path, \
      iotests.FilePath('disk-snapshot.img') as disk_snapshot_img_path, \
diff --git a/tests/qemu-iotests/209 b/tests/qemu-iotests/209
index 65c1a1e70a..8c804f4a30 100755
--- a/tests/qemu-iotests/209
+++ b/tests/qemu-iotests/209
@@ -22,7 +22,7 @@ import iotests
 from iotests import qemu_img_create, qemu_io, qemu_img_verbose, qemu_nbd, \
                     file_path
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 
 disk = file_path('disk')
 nbd_sock = file_path('nbd-sock', base_dir=iotests.sock_dir)
diff --git a/tests/qemu-iotests/210 b/tests/qemu-iotests/210
index e49896e23d..7bf591f313 100755
--- a/tests/qemu-iotests/210
+++ b/tests/qemu-iotests/210
@@ -23,8 +23,10 @@
 import iotests
 from iotests import imgfmt
 
-iotests.verify_image_format(supported_fmts=['luks'])
-iotests.verify_protocol(supported=['file'])
+iotests.script_initialize(
+    supported_fmts=['luks'],
+    supported_protocols=['file'],
+)
 
 with iotests.FilePath('t.luks') as disk_path, \
      iotests.VM() as vm:
diff --git a/tests/qemu-iotests/211 b/tests/qemu-iotests/211
index 163994d559..4969edb00c 100755
--- a/tests/qemu-iotests/211
+++ b/tests/qemu-iotests/211
@@ -23,8 +23,10 @@
 import iotests
 from iotests import imgfmt
 
-iotests.verify_image_format(supported_fmts=['vdi'])
-iotests.verify_protocol(supported=['file'])
+iotests.script_initialize(
+    supported_fmts=['vdi'],
+    supported_protocols=['file'],
+)
 
 def blockdev_create(vm, options):
     error = vm.blockdev_create(options)
diff --git a/tests/qemu-iotests/212 b/tests/qemu-iotests/212
index 800f92dd84..45d08842bb 100755
--- a/tests/qemu-iotests/212
+++ b/tests/qemu-iotests/212
@@ -23,8 +23,10 @@
 import iotests
 from iotests import imgfmt
 
-iotests.verify_image_format(supported_fmts=['parallels'])
-iotests.verify_protocol(supported=['file'])
+iotests.script_initialize(
+    supported_fmts=['parallels'],
+    supported_protocols=['file'],
+)
 
 with iotests.FilePath('t.parallels') as disk_path, \
      iotests.VM() as vm:
diff --git a/tests/qemu-iotests/213 b/tests/qemu-iotests/213
index 1eee45276a..cf638eb927 100755
--- a/tests/qemu-iotests/213
+++ b/tests/qemu-iotests/213
@@ -23,8 +23,10 @@
 import iotests
 from iotests import imgfmt
 
-iotests.verify_image_format(supported_fmts=['vhdx'])
-iotests.verify_protocol(supported=['file'])
+iotests.script_initialize(
+    supported_fmts=['vhdx'],
+    supported_protocols=['file'],
+)
 
 with iotests.FilePath('t.vhdx') as disk_path, \
      iotests.VM() as vm:
diff --git a/tests/qemu-iotests/216 b/tests/qemu-iotests/216
index 372f042d3e..de11d85b5d 100755
--- a/tests/qemu-iotests/216
+++ b/tests/qemu-iotests/216
@@ -23,8 +23,8 @@ import iotests
 from iotests import log, qemu_img, qemu_io_silent
 
 # Need backing file support
-iotests.verify_image_format(supported_fmts=['qcow2', 'qcow', 'qed', 'vmdk'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(supported_fmts=['qcow2', 'qcow', 'qed', 'vmdk'],
+                          supported_platforms=['linux'])
 
 log('')
 log('=== Copy-on-read across nodes ===')
diff --git a/tests/qemu-iotests/218 b/tests/qemu-iotests/218
index 1325ba9eaa..5586870456 100755
--- a/tests/qemu-iotests/218
+++ b/tests/qemu-iotests/218
@@ -29,7 +29,7 @@
 import iotests
 from iotests import log, qemu_img, qemu_io_silent
 
-iotests.verify_image_format(supported_fmts=['qcow2', 'raw'])
+iotests.script_initialize(supported_fmts=['qcow2', 'raw'])
 
 
 # Launches the VM, adds two null-co nodes (source and target), and
diff --git a/tests/qemu-iotests/219 b/tests/qemu-iotests/219
index b8774770c4..db272c5249 100755
--- a/tests/qemu-iotests/219
+++ b/tests/qemu-iotests/219
@@ -21,7 +21,7 @@
 
 import iotests
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 
 img_size = 4 * 1024 * 1024
 
diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222
index bf1718e179..6602f6b4ba 100755
--- a/tests/qemu-iotests/222
+++ b/tests/qemu-iotests/222
@@ -24,9 +24,10 @@
 import iotests
 from iotests import log, qemu_img, qemu_io, qemu_io_silent
 
-iotests.verify_platform(['linux'])
-iotests.verify_image_format(supported_fmts=['qcow2', 'qcow', 'qed', 'vmdk',
-                                            'vhdx', 'raw'])
+iotests.script_initialize(
+    supported_fmts=['qcow2', 'qcow', 'qed', 'vmdk', 'vhdx', 'raw'],
+    supported_platforms=['linux'],
+)
 
 patterns = [("0x5d", "0",         "64k"),
             ("0xd5", "1M",        "64k"),
diff --git a/tests/qemu-iotests/224 b/tests/qemu-iotests/224
index e91fb26fd8..81ca1e4898 100755
--- a/tests/qemu-iotests/224
+++ b/tests/qemu-iotests/224
@@ -26,8 +26,8 @@ from iotests import log, qemu_img, qemu_io_silent, filter_qmp_testfiles, \
 import json
 
 # Need backing file support (for arbitrary backing formats)
-iotests.verify_image_format(supported_fmts=['qcow2', 'qcow', 'qed'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(supported_fmts=['qcow2', 'qcow', 'qed'],
+                          supported_platforms=['linux'])
 
 
 # There are two variations of this test:
diff --git a/tests/qemu-iotests/228 b/tests/qemu-iotests/228
index 64bc82ee23..da0900fb82 100755
--- a/tests/qemu-iotests/228
+++ b/tests/qemu-iotests/228
@@ -25,8 +25,10 @@ from iotests import log, qemu_img, filter_testfiles, filter_imgfmt, \
         filter_qmp_testfiles, filter_qmp_imgfmt
 
 # Need backing file and change-backing-file support
-iotests.verify_image_format(supported_fmts=['qcow2', 'qed'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(
+    supported_fmts=['qcow2', 'qed'],
+    supported_platforms=['linux'],
+)
 
 
 def log_node_info(node):
diff --git a/tests/qemu-iotests/234 b/tests/qemu-iotests/234
index 324c1549fd..73c899ddae 100755
--- a/tests/qemu-iotests/234
+++ b/tests/qemu-iotests/234
@@ -23,8 +23,8 @@
 import iotests
 import os
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          supported_platforms=['linux'])
 
 with iotests.FilePath('img') as img_path, \
      iotests.FilePath('backing') as backing_path, \
diff --git a/tests/qemu-iotests/235 b/tests/qemu-iotests/235
index 760826128e..d1b10ac36b 100755
--- a/tests/qemu-iotests/235
+++ b/tests/qemu-iotests/235
@@ -27,6 +27,8 @@ sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
 
 from qemu.machine import QEMUMachine
 
+iotests.script_initialize(supported_fmts=['qcow2'])
+
 # Note:
 # This test was added to check that mirror dead-lock was fixed (see previous
 # commit before this test addition).
@@ -40,8 +42,6 @@ from qemu.machine import QEMUMachine
 
 size = 1 * 1024 * 1024 * 1024
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
-
 disk = file_path('disk')
 
 # prepare source image
diff --git a/tests/qemu-iotests/236 b/tests/qemu-iotests/236
index 8ce927a16c..6f5cee2444 100755
--- a/tests/qemu-iotests/236
+++ b/tests/qemu-iotests/236
@@ -22,7 +22,7 @@
 import iotests
 from iotests import log
 
-iotests.verify_image_format(supported_fmts=['generic'])
+iotests.script_initialize(supported_fmts=['generic'])
 size = 64 * 1024 * 1024
 granularity = 64 * 1024
 
diff --git a/tests/qemu-iotests/237 b/tests/qemu-iotests/237
index 50ba364a3e..5b21ad3509 100755
--- a/tests/qemu-iotests/237
+++ b/tests/qemu-iotests/237
@@ -24,7 +24,7 @@ import math
 import iotests
 from iotests import imgfmt
 
-iotests.verify_image_format(supported_fmts=['vmdk'])
+iotests.script_initialize(supported_fmts=['vmdk'])
 
 with iotests.FilePath('t.vmdk') as disk_path, \
      iotests.FilePath('t.vmdk.1') as extent1_path, \
diff --git a/tests/qemu-iotests/238 b/tests/qemu-iotests/238
index d4e060228c..b8fcf15a1f 100755
--- a/tests/qemu-iotests/238
+++ b/tests/qemu-iotests/238
@@ -23,6 +23,8 @@ import os
 import iotests
 from iotests import log
 
+iotests.script_initialize()
+
 virtio_scsi_device = iotests.get_virtio_scsi_device()
 
 vm = iotests.VM()
diff --git a/tests/qemu-iotests/242 b/tests/qemu-iotests/242
index 97617876bc..64f1bd95e4 100755
--- a/tests/qemu-iotests/242
+++ b/tests/qemu-iotests/242
@@ -24,7 +24,7 @@ import struct
 from iotests import qemu_img_create, qemu_io, qemu_img_pipe, \
     file_path, img_info_log, log, filter_qemu_io
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 
 disk = file_path('disk')
 chunk = 256 * 1024
diff --git a/tests/qemu-iotests/246 b/tests/qemu-iotests/246
index 59a216a839..58a479cc1f 100755
--- a/tests/qemu-iotests/246
+++ b/tests/qemu-iotests/246
@@ -22,7 +22,7 @@
 import iotests
 from iotests import log
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 size = 64 * 1024 * 1024 * 1024
 gran_small = 32 * 1024
 gran_large = 128 * 1024
diff --git a/tests/qemu-iotests/248 b/tests/qemu-iotests/248
index 68c374692e..18ba03467e 100755
--- a/tests/qemu-iotests/248
+++ b/tests/qemu-iotests/248
@@ -21,7 +21,7 @@
 import iotests
 from iotests import qemu_img_create, qemu_io, file_path, filter_qmp_testfiles
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 
 source, target = file_path('source', 'target')
 size = 5 * 1024 * 1024
diff --git a/tests/qemu-iotests/254 b/tests/qemu-iotests/254
index ee66c986db..150e58be8e 100755
--- a/tests/qemu-iotests/254
+++ b/tests/qemu-iotests/254
@@ -21,7 +21,7 @@
 import iotests
 from iotests import qemu_img_create, file_path, log
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 
 disk, top = file_path('disk', 'top')
 size = 1024 * 1024
diff --git a/tests/qemu-iotests/255 b/tests/qemu-iotests/255
index 4a4818bafb..8f08f741da 100755
--- a/tests/qemu-iotests/255
+++ b/tests/qemu-iotests/255
@@ -23,7 +23,7 @@
 import iotests
 from iotests import imgfmt
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 
 iotests.log('Finishing a commit job with background reads')
 iotests.log('============================================')
diff --git a/tests/qemu-iotests/256 b/tests/qemu-iotests/256
index e34074c83e..db8d6f31cf 100755
--- a/tests/qemu-iotests/256
+++ b/tests/qemu-iotests/256
@@ -23,7 +23,7 @@ import os
 import iotests
 from iotests import log
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(supported_fmts=['qcow2'])
 size = 64 * 1024 * 1024
 
 with iotests.FilePath('img0') as img0_path, \
diff --git a/tests/qemu-iotests/258 b/tests/qemu-iotests/258
index 091755a45c..a65151dda6 100755
--- a/tests/qemu-iotests/258
+++ b/tests/qemu-iotests/258
@@ -24,9 +24,10 @@ from iotests import log, qemu_img, qemu_io_silent, \
         filter_qmp_testfiles, filter_qmp_imgfmt
 
 # Need backing file and change-backing-file support
-iotests.verify_image_format(supported_fmts=['qcow2', 'qed'])
-iotests.verify_platform(['linux'])
-
+iotests.script_initialize(
+    supported_fmts=['qcow2', 'qed'],
+    supported_platforms=['linux'],
+)
 
 # Returns a node for blockdev-add
 def node(node_name, path, backing=None, fmt=None, throttle=None):
diff --git a/tests/qemu-iotests/260 b/tests/qemu-iotests/260
index 30c0de380d..804a7addb9 100755
--- a/tests/qemu-iotests/260
+++ b/tests/qemu-iotests/260
@@ -21,7 +21,9 @@
 import iotests
 from iotests import qemu_img_create, file_path, log, filter_qmp_event
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(
+    supported_fmts=['qcow2']
+)
 
 base, top = file_path('base', 'top')
 size = 64 * 1024 * 3
diff --git a/tests/qemu-iotests/262 b/tests/qemu-iotests/262
index 8835dce7be..03af061f94 100755
--- a/tests/qemu-iotests/262
+++ b/tests/qemu-iotests/262
@@ -23,8 +23,8 @@
 import iotests
 import os
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          supported_platforms=['linux'])
 
 with iotests.FilePath('img') as img_path, \
      iotests.FilePath('mig_fifo') as fifo, \
diff --git a/tests/qemu-iotests/264 b/tests/qemu-iotests/264
index 879123a343..304a7443d7 100755
--- a/tests/qemu-iotests/264
+++ b/tests/qemu-iotests/264
@@ -24,7 +24,9 @@ import iotests
 from iotests import qemu_img_create, qemu_io_silent_check, file_path, \
         qemu_nbd_popen, log
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(
+    supported_fmts=['qcow2'],
+)
 
 disk_a, disk_b, nbd_sock = file_path('disk_a', 'disk_b', 'nbd-sock')
 nbd_uri = 'nbd+unix:///?socket=' + nbd_sock
diff --git a/tests/qemu-iotests/277 b/tests/qemu-iotests/277
index 04aa15a3d5..d34f87021f 100755
--- a/tests/qemu-iotests/277
+++ b/tests/qemu-iotests/277
@@ -23,6 +23,8 @@ import subprocess
 import iotests
 from iotests import file_path, log
 
+iotests.script_initialize()
+
 
 nbd_sock, conf_file = file_path('nbd-sock', 'nbd-fault-injector.conf')
 
diff --git a/tests/qemu-iotests/280 b/tests/qemu-iotests/280
index 69288fdd0e..f594bb9ed2 100755
--- a/tests/qemu-iotests/280
+++ b/tests/qemu-iotests/280
@@ -22,9 +22,11 @@
 import iotests
 import os
 
-iotests.verify_image_format(supported_fmts=['qcow2'])
-iotests.verify_protocol(supported=['file'])
-iotests.verify_platform(['linux'])
+iotests.script_initialize(
+    supported_fmts=['qcow2'],
+    supported_protocols=['file'],
+    supported_platforms=['linux'],
+)
 
 with iotests.FilePath('base') as base_path , \
      iotests.FilePath('top') as top_path, \
diff --git a/tests/qemu-iotests/283 b/tests/qemu-iotests/283
index 55b7cff953..e17b953333 100644
--- a/tests/qemu-iotests/283
+++ b/tests/qemu-iotests/283
@@ -21,7 +21,9 @@
 import iotests
 
 # The test is unrelated to formats, restrict it to qcow2 to avoid extra runs
-iotests.verify_image_format(supported_fmts=['qcow2'])
+iotests.script_initialize(
+    supported_fmts=['qcow2'],
+)
 
 size = 1024 * 1024
 
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 75fd697d77..ec7aa42a70 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -29,6 +29,7 @@
 import atexit
 import io
 from collections import OrderedDict
+from typing import Collection
 
 # pylint: disable=import-error, wrong-import-position
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
@@ -1011,12 +1012,11 @@ def verify_protocol(supported=(), unsupported=()):
     if not_sup or (imgproto in unsupported):
         notrun('not suitable for this protocol: %s' % imgproto)
 
-def verify_platform(supported=None, unsupported=None):
-    if unsupported is not None:
-        if any((sys.platform.startswith(x) for x in unsupported)):
-            notrun('not suitable for this OS: %s' % sys.platform)
+def verify_platform(supported=(), unsupported=()):
+    if any((sys.platform.startswith(x) for x in unsupported)):
+        notrun('not suitable for this OS: %s' % sys.platform)
 
-    if supported is not None:
+    if supported:
         if not any((sys.platform.startswith(x) for x in supported)):
             notrun('not suitable for this OS: %s' % sys.platform)
 
@@ -1098,7 +1098,18 @@ def func_wrapper(*args, **kwargs):
             return func(*args, **kwargs)
     return func_wrapper
 
-def execute_unittest(output, verbosity, debug):
+def execute_unittest(debug=False):
+    """Executes unittests within the calling module."""
+
+    verbosity = 2 if debug else 1
+
+    if debug:
+        output = sys.stdout
+    else:
+        # We need to filter out the time taken from the output so that
+        # qemu-iotest can reliably diff the results against master output.
+        output = io.StringIO()
+
     runner = unittest.TextTestRunner(stream=output, descriptions=True,
                                      verbosity=verbosity)
     try:
@@ -1106,6 +1117,8 @@ def execute_unittest(output, verbosity, debug):
         # exception
         unittest.main(testRunner=runner)
     finally:
+        # We need to filter out the time taken from the output so that
+        # qemu-iotest can reliably diff the results against master output.
         if not debug:
             out = output.getvalue()
             out = re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', out)
@@ -1117,13 +1130,18 @@ def execute_unittest(output, verbosity, debug):
 
             sys.stderr.write(out)
 
-def execute_test(test_function=None,
-                 supported_fmts=(),
-                 supported_platforms=None,
-                 supported_cache_modes=(), supported_aio_modes=(),
-                 unsupported_fmts=(), supported_protocols=(),
-                 unsupported_protocols=()):
-    """Run either unittest or script-style tests."""
+def execute_setup_common(supported_fmts: Collection[str] = (),
+                         supported_platforms: Collection[str] = (),
+                         supported_cache_modes: Collection[str] = (),
+                         supported_aio_modes: Collection[str] = (),
+                         unsupported_fmts: Collection[str] = (),
+                         supported_protocols: Collection[str] = (),
+                         unsupported_protocols: Collection[str] = ()) -> bool:
+    """
+    Perform necessary setup for either script-style or unittest-style tests.
+
+    :return: Bool; Whether or not debug mode has been requested via the CLI.
+    """
 
     # We are using TEST_DIR and QEMU_DEFAULT_MACHINE as proxies to
     # indicate that we're not being run via "check". There may be
@@ -1133,34 +1151,39 @@ def execute_test(test_function=None,
         sys.stderr.write('Please run this test via the "check" script\n')
         sys.exit(os.EX_USAGE)
 
-    debug = '-d' in sys.argv
-    verbosity = 1
     verify_image_format(supported_fmts, unsupported_fmts)
     verify_protocol(supported_protocols, unsupported_protocols)
     verify_platform(supported=supported_platforms)
     verify_cache_mode(supported_cache_modes)
     verify_aio_mode(supported_aio_modes)
 
+    debug = '-d' in sys.argv
     if debug:
-        output = sys.stdout
-        verbosity = 2
         sys.argv.remove('-d')
-    else:
-        # We need to filter out the time taken from the output so that
-        # qemu-iotest can reliably diff the results against master output.
-        output = io.StringIO()
-
     logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN))
 
+    return debug
+
+def execute_test(*args, test_function=None, **kwargs):
+    """Run either unittest or script-style tests."""
+
+    debug = execute_setup_common(*args, **kwargs)
     if not test_function:
-        execute_unittest(output, verbosity, debug)
+        execute_unittest(debug)
     else:
         test_function()
 
+# This is called from script-style iotests without a single point of entry
+def script_initialize(*args, **kwargs):
+    """Initialize script-style tests without running any tests."""
+    execute_setup_common(*args, **kwargs)
+
+# This is called from script-style iotests with a single point of entry
 def script_main(test_function, *args, **kwargs):
     """Run script-style tests outside of the unittest framework"""
-    execute_test(test_function, *args, **kwargs)
+    execute_test(*args, test_function=test_function, **kwargs)
 
+# This is called from unittest style iotests
 def main(*args, **kwargs):
     """Run tests using the unittest framework"""
-    execute_test(None, *args, **kwargs)
+    execute_test(*args, **kwargs)
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 09/11] iotest 258: use script_main
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (7 preceding siblings ...)
  2020-03-17  0:41 ` [PATCH v8 08/11] iotests: add script_initialize John Snow
@ 2020-03-17  0:41 ` John Snow
  2020-03-17  0:41 ` [PATCH v8 10/11] iotests: Mark verify functions as private John Snow
  2020-03-17  0:41 ` [PATCH v8 11/11] iotests: use python logging for iotests.log() John Snow
  10 siblings, 0 replies; 26+ messages in thread
From: John Snow @ 2020-03-17  0:41 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

Since this one is nicely factored to use a single entry point,
use script_main to run the tests.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/258 | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/tests/qemu-iotests/258 b/tests/qemu-iotests/258
index a65151dda6..e305a1502f 100755
--- a/tests/qemu-iotests/258
+++ b/tests/qemu-iotests/258
@@ -23,12 +23,6 @@ import iotests
 from iotests import log, qemu_img, qemu_io_silent, \
         filter_qmp_testfiles, filter_qmp_imgfmt
 
-# Need backing file and change-backing-file support
-iotests.script_initialize(
-    supported_fmts=['qcow2', 'qed'],
-    supported_platforms=['linux'],
-)
-
 # Returns a node for blockdev-add
 def node(node_name, path, backing=None, fmt=None, throttle=None):
     if fmt is None:
@@ -161,4 +155,7 @@ def main():
     test_concurrent_finish(False)
 
 if __name__ == '__main__':
-    main()
+    # Need backing file and change-backing-file support
+    iotests.script_main(main,
+                        supported_fmts=['qcow2', 'qed'],
+                        supported_platforms=['linux'])
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 10/11] iotests: Mark verify functions as private
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (8 preceding siblings ...)
  2020-03-17  0:41 ` [PATCH v8 09/11] iotest 258: use script_main John Snow
@ 2020-03-17  0:41 ` John Snow
  2020-03-17  0:41 ` [PATCH v8 11/11] iotests: use python logging for iotests.log() John Snow
  10 siblings, 0 replies; 26+ messages in thread
From: John Snow @ 2020-03-17  0:41 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

Mark the verify functions as "private" with a leading underscore, to
discourage their use.

(Also, make pending patches not yet using the new entry points fail in a
very obvious way.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/iotests.py | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index ec7aa42a70..7d6cc430a4 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -988,7 +988,7 @@ def case_notrun(reason):
     open('%s/%s.casenotrun' % (output_dir, seq), 'a').write(
         '    [case not run] ' + reason + '\n')
 
-def verify_image_format(supported_fmts=(), unsupported_fmts=()):
+def _verify_image_format(supported_fmts=(), unsupported_fmts=()):
     assert not (supported_fmts and unsupported_fmts)
 
     if 'generic' in supported_fmts and \
@@ -1002,7 +1002,7 @@ def verify_image_format(supported_fmts=(), unsupported_fmts=()):
     if not_sup or (imgfmt in unsupported_fmts):
         notrun('not suitable for this image format: %s' % imgfmt)
 
-def verify_protocol(supported=(), unsupported=()):
+def _verify_protocol(supported=(), unsupported=()):
     assert not (supported and unsupported)
 
     if 'generic' in supported:
@@ -1012,7 +1012,7 @@ def verify_protocol(supported=(), unsupported=()):
     if not_sup or (imgproto in unsupported):
         notrun('not suitable for this protocol: %s' % imgproto)
 
-def verify_platform(supported=(), unsupported=()):
+def _verify_platform(supported=(), unsupported=()):
     if any((sys.platform.startswith(x) for x in unsupported)):
         notrun('not suitable for this OS: %s' % sys.platform)
 
@@ -1020,11 +1020,11 @@ def verify_platform(supported=(), unsupported=()):
         if not any((sys.platform.startswith(x) for x in supported)):
             notrun('not suitable for this OS: %s' % sys.platform)
 
-def verify_cache_mode(supported_cache_modes=()):
+def _verify_cache_mode(supported_cache_modes=()):
     if supported_cache_modes and (cachemode not in supported_cache_modes):
         notrun('not suitable for this cache mode: %s' % cachemode)
 
-def verify_aio_mode(supported_aio_modes=()):
+def _verify_aio_mode(supported_aio_modes=()):
     if supported_aio_modes and (aiomode not in supported_aio_modes):
         notrun('not suitable for this aio mode: %s' % aiomode)
 
@@ -1151,11 +1151,11 @@ def execute_setup_common(supported_fmts: Collection[str] = (),
         sys.stderr.write('Please run this test via the "check" script\n')
         sys.exit(os.EX_USAGE)
 
-    verify_image_format(supported_fmts, unsupported_fmts)
-    verify_protocol(supported_protocols, unsupported_protocols)
-    verify_platform(supported=supported_platforms)
-    verify_cache_mode(supported_cache_modes)
-    verify_aio_mode(supported_aio_modes)
+    _verify_image_format(supported_fmts, unsupported_fmts)
+    _verify_protocol(supported_protocols, unsupported_protocols)
+    _verify_platform(supported=supported_platforms)
+    _verify_cache_mode(supported_cache_modes)
+    _verify_aio_mode(supported_aio_modes)
 
     debug = '-d' in sys.argv
     if debug:
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* [PATCH v8 11/11] iotests: use python logging for iotests.log()
  2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
                   ` (9 preceding siblings ...)
  2020-03-17  0:41 ` [PATCH v8 10/11] iotests: Mark verify functions as private John Snow
@ 2020-03-17  0:41 ` John Snow
  2020-03-24 16:14   ` Max Reitz
  10 siblings, 1 reply; 26+ messages in thread
From: John Snow @ 2020-03-17  0:41 UTC (permalink / raw)
  To: qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru, Max Reitz, John Snow

We can turn logging on/off globally instead of per-function.

Remove use_log from run_job, and use python logging to turn on
diffable output when we run through a script entry point.

iotest 245 changes output order due to buffering reasons.


An extended note on python logging:

A NullHandler is added to `qemu.iotests` to stop output from being
generated if this code is used as a library without configuring logging.
A NullHandler is only needed at the root, so a duplicate handler is not
needed for `qemu.iotests.diff_io`.

When logging is not configured, messages at the 'WARNING' levels or
above are printed with default settings. The NullHandler stops this from
occurring, which is considered good hygiene for code used as a library.

See https://docs.python.org/3/howto/logging.html#library-config

When logging is actually enabled (always at the behest of an explicit
call by a client script), a root logger is implicitly created at the
root, which allows messages to propagate upwards and be handled/emitted
from the root logger with default settings.

When we want iotest logging, we attach a handler to the
qemu.iotests.diff_io logger and disable propagation to avoid possible
double-printing.

For more information on python logging infrastructure, I highly
recommend downloading the pip package `logging_tree`, which provides
convenient visualizations of the hierarchical logging configuration
under different circumstances.

See https://pypi.org/project/logging_tree/ for more information.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/030        |  4 +--
 tests/qemu-iotests/155        |  2 +-
 tests/qemu-iotests/245        |  1 +
 tests/qemu-iotests/245.out    | 24 ++++++++--------
 tests/qemu-iotests/iotests.py | 53 ++++++++++++++++++++---------------
 5 files changed, 46 insertions(+), 38 deletions(-)

diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index aa911d266a..104e3cee1b 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -411,8 +411,8 @@ class TestParallelOps(iotests.QMPTestCase):
         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0)
         self.assert_qmp(result, 'return', {})
 
-        self.vm.run_job(job='drive0', auto_dismiss=True, use_log=False)
-        self.vm.run_job(job='node4', auto_dismiss=True, use_log=False)
+        self.vm.run_job(job='drive0', auto_dismiss=True)
+        self.vm.run_job(job='node4', auto_dismiss=True)
         self.assert_no_active_block_jobs()
 
     # Test a block-stream and a block-commit job in parallel
diff --git a/tests/qemu-iotests/155 b/tests/qemu-iotests/155
index 571bce9de4..cb371d4649 100755
--- a/tests/qemu-iotests/155
+++ b/tests/qemu-iotests/155
@@ -188,7 +188,7 @@ class MirrorBaseClass(BaseClass):
 
         self.assert_qmp(result, 'return', {})
 
-        self.vm.run_job('mirror-job', use_log=False, auto_finalize=False,
+        self.vm.run_job('mirror-job', auto_finalize=False,
                         pre_finalize=self.openBacking, auto_dismiss=True)
 
     def testFull(self):
diff --git a/tests/qemu-iotests/245 b/tests/qemu-iotests/245
index 1001275a44..4f5f0bb901 100755
--- a/tests/qemu-iotests/245
+++ b/tests/qemu-iotests/245
@@ -1027,5 +1027,6 @@ class TestBlockdevReopen(iotests.QMPTestCase):
         self.run_test_iothreads(None, 'iothread0')
 
 if __name__ == '__main__':
+    iotests.activate_logging()
     iotests.main(supported_fmts=["qcow2"],
                  supported_protocols=["file"])
diff --git a/tests/qemu-iotests/245.out b/tests/qemu-iotests/245.out
index 682b93394d..4b33dcaf5c 100644
--- a/tests/qemu-iotests/245.out
+++ b/tests/qemu-iotests/245.out
@@ -1,17 +1,17 @@
+{"execute": "job-finalize", "arguments": {"id": "commit0"}}
+{"return": {}}
+{"data": {"id": "commit0", "type": "commit"}, "event": "BLOCK_JOB_PENDING", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"device": "commit0", "len": 3145728, "offset": 3145728, "speed": 0, "type": "commit"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"execute": "job-finalize", "arguments": {"id": "stream0"}}
+{"return": {}}
+{"data": {"id": "stream0", "type": "stream"}, "event": "BLOCK_JOB_PENDING", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"device": "stream0", "len": 3145728, "offset": 3145728, "speed": 0, "type": "stream"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"execute": "job-finalize", "arguments": {"id": "stream0"}}
+{"return": {}}
+{"data": {"id": "stream0", "type": "stream"}, "event": "BLOCK_JOB_PENDING", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"device": "stream0", "len": 3145728, "offset": 3145728, "speed": 0, "type": "stream"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 .....................
 ----------------------------------------------------------------------
 Ran 21 tests
 
 OK
-{"execute": "job-finalize", "arguments": {"id": "commit0"}}
-{"return": {}}
-{"data": {"id": "commit0", "type": "commit"}, "event": "BLOCK_JOB_PENDING", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
-{"data": {"device": "commit0", "len": 3145728, "offset": 3145728, "speed": 0, "type": "commit"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
-{"execute": "job-finalize", "arguments": {"id": "stream0"}}
-{"return": {}}
-{"data": {"id": "stream0", "type": "stream"}, "event": "BLOCK_JOB_PENDING", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
-{"data": {"device": "stream0", "len": 3145728, "offset": 3145728, "speed": 0, "type": "stream"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
-{"execute": "job-finalize", "arguments": {"id": "stream0"}}
-{"return": {}}
-{"data": {"id": "stream0", "type": "stream"}, "event": "BLOCK_JOB_PENDING", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
-{"data": {"device": "stream0", "len": 3145728, "offset": 3145728, "speed": 0, "type": "stream"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 7d6cc430a4..9304066471 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -37,6 +37,14 @@
 
 assert sys.version_info >= (3, 6)
 
+# Use this logger for logging messages directly from the iotests module
+logger = logging.getLogger('qemu.iotests')
+logger.addHandler(logging.NullHandler())
+
+# Use this logger for messages that ought to be used for diff output.
+test_logger = logging.getLogger('qemu.iotests.diff_io')
+
+
 # This will not work if arguments contain spaces but is necessary if we
 # want to support the override options that ./check supports.
 qemu_img_args = [os.environ.get('QEMU_IMG_PROG', 'qemu-img')]
@@ -372,9 +380,9 @@ def log(msg, filters=(), indent: Optional[int] = None) -> None:
     if isinstance(msg, (dict, list)):
         # Don't sort if it's already sorted
         do_sort = not isinstance(msg, OrderedDict)
-        print(json.dumps(msg, sort_keys=do_sort, indent=indent))
+        test_logger.info(json.dumps(msg, sort_keys=do_sort, indent=indent))
     else:
-        print(msg)
+        test_logger.info(msg)
 
 class Timeout:
     def __init__(self, seconds, errmsg="Timeout"):
@@ -591,7 +599,7 @@ def qmp_log(self, cmd, filters=(), indent=None, **kwargs):
 
     # Returns None on success, and an error string on failure
     def run_job(self, job, auto_finalize=True, auto_dismiss=False,
-                pre_finalize=None, cancel=False, use_log=True, wait=60.0):
+                pre_finalize=None, cancel=False, wait=60.0):
         """
         run_job moves a job from creation through to dismissal.
 
@@ -604,7 +612,6 @@ def run_job(self, job, auto_finalize=True, auto_dismiss=False,
                              invoked prior to issuing job-finalize, if any.
         :param cancel: Bool. When true, cancels the job after the pre_finalize
                        callback.
-        :param use_log: Bool. When false, does not log QMP messages.
         :param wait: Float. Timeout value specifying how long to wait for any
                      event, in seconds. Defaults to 60.0.
         """
@@ -622,8 +629,7 @@ def run_job(self, job, auto_finalize=True, auto_dismiss=False,
         while True:
             ev = filter_qmp_event(self.events_wait(events, timeout=wait))
             if ev['event'] != 'JOB_STATUS_CHANGE':
-                if use_log:
-                    log(ev)
+                log(ev)
                 continue
             status = ev['data']['status']
             if status == 'aborting':
@@ -631,29 +637,18 @@ def run_job(self, job, auto_finalize=True, auto_dismiss=False,
                 for j in result['return']:
                     if j['id'] == job:
                         error = j['error']
-                        if use_log:
-                            log('Job failed: %s' % (j['error']))
+                        log('Job failed: %s' % (j['error']))
             elif status == 'ready':
-                if use_log:
-                    self.qmp_log('job-complete', id=job)
-                else:
-                    self.qmp('job-complete', id=job)
+                self.qmp_log('job-complete', id=job)
             elif status == 'pending' and not auto_finalize:
                 if pre_finalize:
                     pre_finalize()
-                if cancel and use_log:
+                if cancel:
                     self.qmp_log('job-cancel', id=job)
-                elif cancel:
-                    self.qmp('job-cancel', id=job)
-                elif use_log:
+                else:
                     self.qmp_log('job-finalize', id=job)
-                else:
-                    self.qmp('job-finalize', id=job)
             elif status == 'concluded' and not auto_dismiss:
-                if use_log:
-                    self.qmp_log('job-dismiss', id=job)
-                else:
-                    self.qmp('job-dismiss', id=job)
+                self.qmp_log('job-dismiss', id=job)
             elif status == 'null':
                 return error
 
@@ -973,7 +968,7 @@ def notrun(reason):
     seq = os.path.basename(sys.argv[0])
 
     open('%s/%s.notrun' % (output_dir, seq), 'w').write(reason + '\n')
-    print('%s not run: %s' % (seq, reason))
+    logger.warning("%s not run: %s", seq, reason)
     sys.exit(0)
 
 def case_notrun(reason):
@@ -1161,6 +1156,7 @@ def execute_setup_common(supported_fmts: Collection[str] = (),
     if debug:
         sys.argv.remove('-d')
     logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN))
+    logger.debug("iotests debugging messages active")
 
     return debug
 
@@ -1173,14 +1169,25 @@ def execute_test(*args, test_function=None, **kwargs):
     else:
         test_function()
 
+def activate_logging():
+    """Activate iotests.log() output to stdout for script-style tests."""
+    handler = logging.StreamHandler(stream=sys.stdout)
+    formatter = logging.Formatter('%(message)s')
+    handler.setFormatter(formatter)
+    test_logger.addHandler(handler)
+    test_logger.setLevel(logging.INFO)
+    test_logger.propagate = False
+
 # This is called from script-style iotests without a single point of entry
 def script_initialize(*args, **kwargs):
     """Initialize script-style tests without running any tests."""
+    activate_logging()
     execute_setup_common(*args, **kwargs)
 
 # This is called from script-style iotests with a single point of entry
 def script_main(test_function, *args, **kwargs):
     """Run script-style tests outside of the unittest framework"""
+    activate_logging()
     execute_test(*args, test_function=test_function, **kwargs)
 
 # This is called from unittest style iotests
-- 
2.21.1



^ permalink raw reply related	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 07/11] iotests: limit line length to 79 chars
  2020-03-17  0:41 ` [PATCH v8 07/11] iotests: limit line length to 79 chars John Snow
@ 2020-03-17 10:36   ` Philippe Mathieu-Daudé
  2020-03-17 13:48     ` John Snow
  2020-03-24 15:02   ` Max Reitz
  1 sibling, 1 reply; 26+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-03-17 10:36 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, armbru, Max Reitz

On 3/17/20 1:41 AM, John Snow wrote:
> 79 is the PEP8 recommendation. This recommendation works well for
> reading patch diffs in TUI email clients.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>   tests/qemu-iotests/iotests.py | 64 +++++++++++++++++++++++------------
>   tests/qemu-iotests/pylintrc   |  6 +++-
>   2 files changed, 47 insertions(+), 23 deletions(-)
> 
> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
> index 3d90fb157d..75fd697d77 100644
> --- a/tests/qemu-iotests/iotests.py
> +++ b/tests/qemu-iotests/iotests.py
> @@ -77,9 +77,11 @@
>   def qemu_img(*args):
>       '''Run qemu-img and return the exit code'''
>       devnull = open('/dev/null', 'r+')
> -    exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
> +    exitcode = subprocess.call(qemu_img_args + list(args),
> +                               stdin=devnull, stdout=devnull)
>       if exitcode < 0:
> -        sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
> +        sys.stderr.write('qemu-img received signal %i: %s\n'
> +                         % (-exitcode, ' '.join(qemu_img_args + list(args))))
>       return exitcode
>   
>   def ordered_qmp(qmsg, conv_keys=True):
> @@ -118,7 +120,8 @@ def qemu_img_verbose(*args):
>       '''Run qemu-img without suppressing its output and return the exit code'''
>       exitcode = subprocess.call(qemu_img_args + list(args))
>       if exitcode < 0:
> -        sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
> +        sys.stderr.write('qemu-img received signal %i: %s\n'
> +                         % (-exitcode, ' '.join(qemu_img_args + list(args))))
>       return exitcode
>   
>   def qemu_img_pipe(*args):
> @@ -129,7 +132,8 @@ def qemu_img_pipe(*args):
>                               universal_newlines=True)
>       exitcode = subp.wait()
>       if exitcode < 0:
> -        sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
> +        sys.stderr.write('qemu-img received signal %i: %s\n'
> +                         % (-exitcode, ' '.join(qemu_img_args + list(args))))
>       return subp.communicate()[0]
>   
>   def qemu_img_log(*args):
> @@ -159,7 +163,8 @@ def qemu_io(*args):
>                               universal_newlines=True)
>       exitcode = subp.wait()
>       if exitcode < 0:
> -        sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args)))
> +        sys.stderr.write('qemu-io received signal %i: %s\n'
> +                         % (-exitcode, ' '.join(args)))
>       return subp.communicate()[0]
>   
>   def qemu_io_log(*args):
> @@ -281,10 +286,13 @@ def filter_test_dir(msg):
>   def filter_win32(msg):
>       return win32_re.sub("", msg)
>   
> -qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* \([0-9\/.inf]* [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)")
> +qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* "
> +                        r"\([0-9\/.inf]* [EPTGMKiBbytes]*\/sec "
> +                        r"and [0-9\/.inf]* ops\/sec\)")
>   def filter_qemu_io(msg):
>       msg = filter_win32(msg)
> -    return qemu_io_re.sub("X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)", msg)
> +    return qemu_io_re.sub("X ops; XX:XX:XX.X "
> +                          "(XXX YYY/sec and XXX ops/sec)", msg)
>   
>   chown_re = re.compile(r"chown [0-9]+:[0-9]+")
>   def filter_chown(msg):
> @@ -336,7 +344,9 @@ def filter_img_info(output, filename):
>           line = line.replace(filename, 'TEST_IMG') \
>                      .replace(imgfmt, 'IMGFMT')
>           line = re.sub('iters: [0-9]+', 'iters: XXX', line)
> -        line = re.sub('uuid: [-a-f0-9]+', 'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', line)
> +        line = re.sub('uuid: [-a-f0-9]+',
> +                      'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX',
> +                      line)
>           line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line)
>           lines.append(line)
>       return '\n'.join(lines)
> @@ -529,11 +539,13 @@ def pause_drive(self, drive, event=None):
>               self.pause_drive(drive, "write_aio")
>               return
>           self.qmp('human-monitor-command',
> -                 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
> +                 command_line='qemu-io %s "break %s bp_%s"'
> +                 % (drive, event, drive))
>   
>       def resume_drive(self, drive):
>           self.qmp('human-monitor-command',
> -                 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
> +                 command_line='qemu-io %s "remove_break bp_%s"'
> +                 % (drive, drive))
>   
>       def hmp_qemu_io(self, drive, cmd):
>           '''Write to a given drive using an HMP command'''
> @@ -793,16 +805,18 @@ def dictpath(self, d, path):
>                   idx = int(idx)
>   
>               if not isinstance(d, dict) or component not in d:
> -                self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
> +                self.fail(f'failed path traversal for "{path}" in "{d}"')
>               d = d[component]
>   
>               if m:
>                   if not isinstance(d, list):
> -                    self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
> +                    self.fail(f'path component "{component}" in "{path}" '
> +                              f'is not a list in "{d}"')
>                   try:
>                       d = d[idx]
>                   except IndexError:
> -                    self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
> +                    self.fail(f'invalid index "{idx}" in path "{path}" '
> +                              f'in "{d}"')
>           return d
>   
>       def assert_qmp_absent(self, d, path):
> @@ -853,10 +867,13 @@ def assert_json_filename_equal(self, json_filename, reference):
>           '''Asserts that the given filename is a json: filename and that its
>              content is equal to the given reference object'''
>           self.assertEqual(json_filename[:5], 'json:')
> -        self.assertEqual(self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
> -                         self.vm.flatten_qmp_object(reference))
> +        self.assertEqual(
> +            self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
> +            self.vm.flatten_qmp_object(reference)
> +        )
>   
> -    def cancel_and_wait(self, drive='drive0', force=False, resume=False, wait=60.0):
> +    def cancel_and_wait(self, drive='drive0', force=False,
> +                        resume=False, wait=60.0):
>           '''Cancel a block job and wait for it to finish, returning the event'''
>           result = self.vm.qmp('block-job-cancel', device=drive, force=force)
>           self.assert_qmp(result, 'return', {})
> @@ -880,8 +897,8 @@ def cancel_and_wait(self, drive='drive0', force=False, resume=False, wait=60.0):
>           self.assert_no_active_block_jobs()
>           return result
>   
> -    def wait_until_completed(self, drive='drive0', check_offset=True, wait=60.0,
> -                             error=None):
> +    def wait_until_completed(self, drive='drive0', check_offset=True,
> +                             wait=60.0, error=None):
>           '''Wait for a block job to finish, returning the event'''
>           while True:
>               for event in self.vm.get_qmp_events(wait=wait):
> @@ -1020,8 +1037,11 @@ def verify_quorum():
>           notrun('quorum support missing')
>   
>   def qemu_pipe(*args):
> -    '''Run qemu with an option to print something and exit (e.g. a help option),
> -    and return its output'''
> +    """
> +    Run qemu with an option to print something and exit (e.g. a help option).
> +
> +    :return: QEMU's stdout output.
> +    """
>       args = [qemu_prog] + qemu_opts + list(args)
>       subp = subprocess.Popen(args, stdout=subprocess.PIPE,
>                               stderr=subprocess.STDOUT,
> @@ -1059,8 +1079,8 @@ def func_wrapper(test_case: QMPTestCase, *args, **kwargs):
>   
>               usf_list = list(set(fmts) - set(supported_formats(read_only)))
>               if usf_list:
> -                test_case.case_skip('{}: formats {} are not whitelisted'.format(
> -                    test_case, usf_list))
> +                msg = f'{test_case}: formats {usf_list} are not whitelisted'
> +                test_case.case_skip(msg)
>                   return None
>               else:
>                   return func(test_case, *args, **kwargs)
> diff --git a/tests/qemu-iotests/pylintrc b/tests/qemu-iotests/pylintrc
> index 8720b6a0de..8d02f00607 100644
> --- a/tests/qemu-iotests/pylintrc
> +++ b/tests/qemu-iotests/pylintrc
> @@ -19,4 +19,8 @@ disable=invalid-name,
>           too-many-public-methods,
>           # These are temporary, and should be removed:
>           missing-docstring,
> -        line-too-long,
> +
> +[FORMAT]
> +
> +# Maximum number of characters on a single line.
> +max-line-length=79
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>



^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 03/11] iotests: ignore import warnings from pylint
  2020-03-17  0:40 ` [PATCH v8 03/11] iotests: ignore import warnings from pylint John Snow
@ 2020-03-17 10:38   ` Philippe Mathieu-Daudé
  2020-03-24 14:02   ` Max Reitz
  1 sibling, 0 replies; 26+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-03-17 10:38 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, armbru, Max Reitz

On 3/17/20 1:40 AM, John Snow wrote:
> The right way to solve this is to come up with a virtual environment
> infrastructure that sets all the paths correctly, and/or to create
> installable python modules that can be imported normally.
> 
> That's hard, so just silence this error for now.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>   tests/qemu-iotests/iotests.py | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
> index a6b2889932..cb9c2cd05d 100644
> --- a/tests/qemu-iotests/iotests.py
> +++ b/tests/qemu-iotests/iotests.py
> @@ -29,6 +29,7 @@
>   import io
>   from collections import OrderedDict
>   
> +# pylint: disable=import-error, wrong-import-position
>   sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
>   from qemu import qtest
>   
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>



^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 07/11] iotests: limit line length to 79 chars
  2020-03-17 10:36   ` Philippe Mathieu-Daudé
@ 2020-03-17 13:48     ` John Snow
  0 siblings, 0 replies; 26+ messages in thread
From: John Snow @ 2020-03-17 13:48 UTC (permalink / raw)
  To: Philippe Mathieu-Daudé, qemu-devel
  Cc: Kevin Wolf, ehabkost, qemu-block, armbru, Max Reitz



On 3/17/20 6:36 AM, Philippe Mathieu-Daudé wrote:
> On 3/17/20 1:41 AM, John Snow wrote:
>> 79 is the PEP8 recommendation. This recommendation works well for
>> reading patch diffs in TUI email clients.
>>
>> Signed-off-by: John Snow <jsnow@redhat.com>
>> ---
>>   tests/qemu-iotests/iotests.py | 64 +++++++++++++++++++++++------------
>>   tests/qemu-iotests/pylintrc   |  6 +++-
>>   2 files changed, 47 insertions(+), 23 deletions(-)
>>
>> diff --git a/tests/qemu-iotests/iotests.py
>> b/tests/qemu-iotests/iotests.py
>> index 3d90fb157d..75fd697d77 100644
>> --- a/tests/qemu-iotests/iotests.py
>> +++ b/tests/qemu-iotests/iotests.py
>> @@ -77,9 +77,11 @@
>>   def qemu_img(*args):
>>       '''Run qemu-img and return the exit code'''
>>       devnull = open('/dev/null', 'r+')
>> -    exitcode = subprocess.call(qemu_img_args + list(args),
>> stdin=devnull, stdout=devnull)
>> +    exitcode = subprocess.call(qemu_img_args + list(args),
>> +                               stdin=devnull, stdout=devnull)
>>       if exitcode < 0:
>> -        sys.stderr.write('qemu-img received signal %i: %s\n' %
>> (-exitcode, ' '.join(qemu_img_args + list(args))))
>> +        sys.stderr.write('qemu-img received signal %i: %s\n'
>> +                         % (-exitcode, ' '.join(qemu_img_args +
>> list(args))))
>>       return exitcode
>>     def ordered_qmp(qmsg, conv_keys=True):
>> @@ -118,7 +120,8 @@ def qemu_img_verbose(*args):
>>       '''Run qemu-img without suppressing its output and return the
>> exit code'''
>>       exitcode = subprocess.call(qemu_img_args + list(args))
>>       if exitcode < 0:
>> -        sys.stderr.write('qemu-img received signal %i: %s\n' %
>> (-exitcode, ' '.join(qemu_img_args + list(args))))
>> +        sys.stderr.write('qemu-img received signal %i: %s\n'
>> +                         % (-exitcode, ' '.join(qemu_img_args +
>> list(args))))
>>       return exitcode
>>     def qemu_img_pipe(*args):
>> @@ -129,7 +132,8 @@ def qemu_img_pipe(*args):
>>                               universal_newlines=True)
>>       exitcode = subp.wait()
>>       if exitcode < 0:
>> -        sys.stderr.write('qemu-img received signal %i: %s\n' %
>> (-exitcode, ' '.join(qemu_img_args + list(args))))
>> +        sys.stderr.write('qemu-img received signal %i: %s\n'
>> +                         % (-exitcode, ' '.join(qemu_img_args +
>> list(args))))
>>       return subp.communicate()[0]
>>     def qemu_img_log(*args):
>> @@ -159,7 +163,8 @@ def qemu_io(*args):
>>                               universal_newlines=True)
>>       exitcode = subp.wait()
>>       if exitcode < 0:
>> -        sys.stderr.write('qemu-io received signal %i: %s\n' %
>> (-exitcode, ' '.join(args)))
>> +        sys.stderr.write('qemu-io received signal %i: %s\n'
>> +                         % (-exitcode, ' '.join(args)))
>>       return subp.communicate()[0]
>>     def qemu_io_log(*args):
>> @@ -281,10 +286,13 @@ def filter_test_dir(msg):
>>   def filter_win32(msg):
>>       return win32_re.sub("", msg)
>>   -qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* \([0-9\/.inf]*
>> [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)")
>> +qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* "
>> +                        r"\([0-9\/.inf]* [EPTGMKiBbytes]*\/sec "
>> +                        r"and [0-9\/.inf]* ops\/sec\)")
>>   def filter_qemu_io(msg):
>>       msg = filter_win32(msg)
>> -    return qemu_io_re.sub("X ops; XX:XX:XX.X (XXX YYY/sec and XXX
>> ops/sec)", msg)
>> +    return qemu_io_re.sub("X ops; XX:XX:XX.X "
>> +                          "(XXX YYY/sec and XXX ops/sec)", msg)
>>     chown_re = re.compile(r"chown [0-9]+:[0-9]+")
>>   def filter_chown(msg):
>> @@ -336,7 +344,9 @@ def filter_img_info(output, filename):
>>           line = line.replace(filename, 'TEST_IMG') \
>>                      .replace(imgfmt, 'IMGFMT')
>>           line = re.sub('iters: [0-9]+', 'iters: XXX', line)
>> -        line = re.sub('uuid: [-a-f0-9]+', 'uuid:
>> XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', line)
>> +        line = re.sub('uuid: [-a-f0-9]+',
>> +                      'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX',
>> +                      line)
>>           line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line)
>>           lines.append(line)
>>       return '\n'.join(lines)
>> @@ -529,11 +539,13 @@ def pause_drive(self, drive, event=None):
>>               self.pause_drive(drive, "write_aio")
>>               return
>>           self.qmp('human-monitor-command',
>> -                 command_line='qemu-io %s "break %s bp_%s"' % (drive,
>> event, drive))
>> +                 command_line='qemu-io %s "break %s bp_%s"'
>> +                 % (drive, event, drive))
>>         def resume_drive(self, drive):
>>           self.qmp('human-monitor-command',
>> -                 command_line='qemu-io %s "remove_break bp_%s"' %
>> (drive, drive))
>> +                 command_line='qemu-io %s "remove_break bp_%s"'
>> +                 % (drive, drive))
>>         def hmp_qemu_io(self, drive, cmd):
>>           '''Write to a given drive using an HMP command'''
>> @@ -793,16 +805,18 @@ def dictpath(self, d, path):
>>                   idx = int(idx)
>>                 if not isinstance(d, dict) or component not in d:
>> -                self.fail('failed path traversal for "%s" in "%s"' %
>> (path, str(d)))
>> +                self.fail(f'failed path traversal for "{path}" in
>> "{d}"')
>>               d = d[component]
>>                 if m:
>>                   if not isinstance(d, list):
>> -                    self.fail('path component "%s" in "%s" is not a
>> list in "%s"' % (component, path, str(d)))
>> +                    self.fail(f'path component "{component}" in
>> "{path}" '
>> +                              f'is not a list in "{d}"')
>>                   try:
>>                       d = d[idx]
>>                   except IndexError:
>> -                    self.fail('invalid index "%s" in path "%s" in
>> "%s"' % (idx, path, str(d)))
>> +                    self.fail(f'invalid index "{idx}" in path "{path}" '
>> +                              f'in "{d}"')
>>           return d
>>         def assert_qmp_absent(self, d, path):
>> @@ -853,10 +867,13 @@ def assert_json_filename_equal(self,
>> json_filename, reference):
>>           '''Asserts that the given filename is a json: filename and
>> that its
>>              content is equal to the given reference object'''
>>           self.assertEqual(json_filename[:5], 'json:')
>> -       
>> self.assertEqual(self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
>>
>> -                         self.vm.flatten_qmp_object(reference))
>> +        self.assertEqual(
>> +            self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
>> +            self.vm.flatten_qmp_object(reference)
>> +        )
>>   -    def cancel_and_wait(self, drive='drive0', force=False,
>> resume=False, wait=60.0):
>> +    def cancel_and_wait(self, drive='drive0', force=False,
>> +                        resume=False, wait=60.0):
>>           '''Cancel a block job and wait for it to finish, returning
>> the event'''
>>           result = self.vm.qmp('block-job-cancel', device=drive,
>> force=force)
>>           self.assert_qmp(result, 'return', {})
>> @@ -880,8 +897,8 @@ def cancel_and_wait(self, drive='drive0',
>> force=False, resume=False, wait=60.0):
>>           self.assert_no_active_block_jobs()
>>           return result
>>   -    def wait_until_completed(self, drive='drive0',
>> check_offset=True, wait=60.0,
>> -                             error=None):
>> +    def wait_until_completed(self, drive='drive0', check_offset=True,
>> +                             wait=60.0, error=None):
>>           '''Wait for a block job to finish, returning the event'''
>>           while True:
>>               for event in self.vm.get_qmp_events(wait=wait):
>> @@ -1020,8 +1037,11 @@ def verify_quorum():
>>           notrun('quorum support missing')
>>     def qemu_pipe(*args):
>> -    '''Run qemu with an option to print something and exit (e.g. a
>> help option),
>> -    and return its output'''
>> +    """
>> +    Run qemu with an option to print something and exit (e.g. a help
>> option).
>> +
>> +    :return: QEMU's stdout output.
>> +    """
>>       args = [qemu_prog] + qemu_opts + list(args)
>>       subp = subprocess.Popen(args, stdout=subprocess.PIPE,
>>                               stderr=subprocess.STDOUT,
>> @@ -1059,8 +1079,8 @@ def func_wrapper(test_case: QMPTestCase, *args,
>> **kwargs):
>>                 usf_list = list(set(fmts) -
>> set(supported_formats(read_only)))
>>               if usf_list:
>> -                test_case.case_skip('{}: formats {} are not
>> whitelisted'.format(
>> -                    test_case, usf_list))
>> +                msg = f'{test_case}: formats {usf_list} are not
>> whitelisted'
>> +                test_case.case_skip(msg)
>>                   return None
>>               else:
>>                   return func(test_case, *args, **kwargs)
>> diff --git a/tests/qemu-iotests/pylintrc b/tests/qemu-iotests/pylintrc
>> index 8720b6a0de..8d02f00607 100644
>> --- a/tests/qemu-iotests/pylintrc
>> +++ b/tests/qemu-iotests/pylintrc
>> @@ -19,4 +19,8 @@ disable=invalid-name,
>>           too-many-public-methods,
>>           # These are temporary, and should be removed:
>>           missing-docstring,
>> -        line-too-long,
>> +
>> +[FORMAT]
>> +
>> +# Maximum number of characters on a single line.
>> +max-line-length=79
>>
> 
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> 

Thanks :)



^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 01/11] iotests: do a light delinting
  2020-03-17  0:40 ` [PATCH v8 01/11] iotests: do a light delinting John Snow
@ 2020-03-24 13:56   ` Max Reitz
  0 siblings, 0 replies; 26+ messages in thread
From: Max Reitz @ 2020-03-24 13:56 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 617 bytes --]

On 17.03.20 01:40, John Snow wrote:
> This doesn't fix everything in here, but it does help clean up the
> pylint report considerably.
> 
> This should be 100% style changes only; the intent is to make pylint
> more useful by working on establishing a baseline for iotests that we
> can gate against in the future.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>  tests/qemu-iotests/iotests.py | 83 ++++++++++++++++++-----------------
>  1 file changed, 43 insertions(+), 40 deletions(-)

Reviewed-by: Max Reitz <mreitz@redhat.com>


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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 03/11] iotests: ignore import warnings from pylint
  2020-03-17  0:40 ` [PATCH v8 03/11] iotests: ignore import warnings from pylint John Snow
  2020-03-17 10:38   ` Philippe Mathieu-Daudé
@ 2020-03-24 14:02   ` Max Reitz
  1 sibling, 0 replies; 26+ messages in thread
From: Max Reitz @ 2020-03-24 14:02 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 477 bytes --]

On 17.03.20 01:40, John Snow wrote:
> The right way to solve this is to come up with a virtual environment
> infrastructure that sets all the paths correctly, and/or to create
> installable python modules that can be imported normally.
> 
> That's hard, so just silence this error for now.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  tests/qemu-iotests/iotests.py | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Max Reitz <mreitz@redhat.com>


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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 04/11] iotests: replace mutable list default args
  2020-03-17  0:40 ` [PATCH v8 04/11] iotests: replace mutable list default args John Snow
@ 2020-03-24 14:35   ` Max Reitz
  0 siblings, 0 replies; 26+ messages in thread
From: Max Reitz @ 2020-03-24 14:35 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 523 bytes --]

On 17.03.20 01:40, John Snow wrote:
> It's bad hygiene: if we modify this list, it will be modified across all
> invocations.
> 
> (Remaining bad usages are fixed in a subsequent patch which changes the
> function signature anyway.)
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>  tests/qemu-iotests/iotests.py | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)

Reviewed-by: Max Reitz <mreitz@redhat.com>


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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 05/11] iotests: add pylintrc file
  2020-03-17  0:40 ` [PATCH v8 05/11] iotests: add pylintrc file John Snow
@ 2020-03-24 14:47   ` Max Reitz
  0 siblings, 0 replies; 26+ messages in thread
From: Max Reitz @ 2020-03-24 14:47 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 415 bytes --]

On 17.03.20 01:40, John Snow wrote:
> This allows others to get repeatable results with pylint. If you run
> `pylint iotests.py`, you should see a 100% pass.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  tests/qemu-iotests/pylintrc | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 tests/qemu-iotests/pylintrc

Reviewed-by: Max Reitz <mreitz@redhat.com>


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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 06/11] iotests: drop Python 3.4 compatibility code
  2020-03-17  0:41 ` [PATCH v8 06/11] iotests: drop Python 3.4 compatibility code John Snow
@ 2020-03-24 14:54   ` Max Reitz
  2020-03-24 16:57     ` John Snow
  0 siblings, 1 reply; 26+ messages in thread
From: Max Reitz @ 2020-03-24 14:54 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 2070 bytes --]

On 17.03.20 01:41, John Snow wrote:
> We no longer need to accommodate 3.4, drop this code.

Pre-3.4, actually.

> (Also, the line is over 79 characters, so drop it.)
> 
> Touch up the docstring a little bit while we're here.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  tests/qemu-iotests/iotests.py | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
> index 7cd74e7cb1..3d90fb157d 100644
> --- a/tests/qemu-iotests/iotests.py
> +++ b/tests/qemu-iotests/iotests.py
> @@ -22,6 +22,7 @@
>  import unittest
>  import sys
>  import struct
> +from typing import Optional
>  import json
>  import signal
>  import logging
> @@ -350,18 +351,17 @@ def _filter(_key, value):
>          return value
>      return filter_qmp(qmsg, _filter)
>  
> -def log(msg, filters=(), indent=None):
> -    '''Logs either a string message or a JSON serializable message (like QMP).
> -    If indent is provided, JSON serializable messages are pretty-printed.'''
> +def log(msg, filters=(), indent: Optional[int] = None) -> None:
> +    """
> +    Logs either a string message or a JSON serializable message (like QMP).
> +    If indent is provided, JSON serializable messages are pretty-printed.
> +    """

I feel like I should complain about this unrelated (I think?) change,
but I won’t.

Reviewed-by: Max Reitz <mreitz@redhat.com>

>      for flt in filters:
>          msg = flt(msg)
>      if isinstance(msg, (dict, list)):
> -        # Python < 3.4 needs to know not to add whitespace when pretty-printing:
> -        separators = (', ', ': ') if indent is None else (',', ': ')
>          # Don't sort if it's already sorted
>          do_sort = not isinstance(msg, OrderedDict)
> -        print(json.dumps(msg, sort_keys=do_sort,
> -                         indent=indent, separators=separators))
> +        print(json.dumps(msg, sort_keys=do_sort, indent=indent))
>      else:
>          print(msg)
>  
> 



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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 07/11] iotests: limit line length to 79 chars
  2020-03-17  0:41 ` [PATCH v8 07/11] iotests: limit line length to 79 chars John Snow
  2020-03-17 10:36   ` Philippe Mathieu-Daudé
@ 2020-03-24 15:02   ` Max Reitz
  2020-03-24 15:12     ` Max Reitz
  1 sibling, 1 reply; 26+ messages in thread
From: Max Reitz @ 2020-03-24 15:02 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 2143 bytes --]

On 17.03.20 01:41, John Snow wrote:
> 79 is the PEP8 recommendation. This recommendation works well for
> reading patch diffs in TUI email clients.

Also for my very GUI-y diff program (kompare).

> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  tests/qemu-iotests/iotests.py | 64 +++++++++++++++++++++++------------
>  tests/qemu-iotests/pylintrc   |  6 +++-
>  2 files changed, 47 insertions(+), 23 deletions(-)
> 
> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
> index 3d90fb157d..75fd697d77 100644
> --- a/tests/qemu-iotests/iotests.py
> +++ b/tests/qemu-iotests/iotests.py

[...]

> @@ -529,11 +539,13 @@ def pause_drive(self, drive, event=None):
>              self.pause_drive(drive, "write_aio")
>              return
>          self.qmp('human-monitor-command',
> -                 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
> +                 command_line='qemu-io %s "break %s bp_%s"'
> +                 % (drive, event, drive))

Can we put this value in a variable instead?  I don’t like the %
aligning with the parameter name instead of the string value.  (I also
don’t like how there are no spaces around the assignment =, but around
the %, even though the % binds more strongly.)

>  
>      def resume_drive(self, drive):
>          self.qmp('human-monitor-command',
> -                 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
> +                 command_line='qemu-io %s "remove_break bp_%s"'
> +                 % (drive, drive))
>  
>      def hmp_qemu_io(self, drive, cmd):
>          '''Write to a given drive using an HMP command'''
> @@ -793,16 +805,18 @@ def dictpath(self, d, path):
>                  idx = int(idx)
>  
>              if not isinstance(d, dict) or component not in d:
> -                self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
> +                self.fail(f'failed path traversal for "{path}" in "{d}"')

Do we require 3.6 so that f-strings are guaranteed to work?  (I thought
we didn’t.  I’d be happy to use them.)

Max


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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 07/11] iotests: limit line length to 79 chars
  2020-03-24 15:02   ` Max Reitz
@ 2020-03-24 15:12     ` Max Reitz
  2020-03-24 17:09       ` John Snow
  0 siblings, 1 reply; 26+ messages in thread
From: Max Reitz @ 2020-03-24 15:12 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 2329 bytes --]

On 24.03.20 16:02, Max Reitz wrote:
> On 17.03.20 01:41, John Snow wrote:
>> 79 is the PEP8 recommendation. This recommendation works well for
>> reading patch diffs in TUI email clients.
> 
> Also for my very GUI-y diff program (kompare).
> 
>> Signed-off-by: John Snow <jsnow@redhat.com>
>> ---
>>  tests/qemu-iotests/iotests.py | 64 +++++++++++++++++++++++------------
>>  tests/qemu-iotests/pylintrc   |  6 +++-
>>  2 files changed, 47 insertions(+), 23 deletions(-)
>>
>> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
>> index 3d90fb157d..75fd697d77 100644
>> --- a/tests/qemu-iotests/iotests.py
>> +++ b/tests/qemu-iotests/iotests.py
> 
> [...]
> 
>> @@ -529,11 +539,13 @@ def pause_drive(self, drive, event=None):
>>              self.pause_drive(drive, "write_aio")
>>              return
>>          self.qmp('human-monitor-command',
>> -                 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
>> +                 command_line='qemu-io %s "break %s bp_%s"'
>> +                 % (drive, event, drive))
> 
> Can we put this value in a variable instead?  I don’t like the %
> aligning with the parameter name instead of the string value.  (I also
> don’t like how there are no spaces around the assignment =, but around
> the %, even though the % binds more strongly.)
> 
>>  
>>      def resume_drive(self, drive):
>>          self.qmp('human-monitor-command',
>> -                 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
>> +                 command_line='qemu-io %s "remove_break bp_%s"'
>> +                 % (drive, drive))
>>  
>>      def hmp_qemu_io(self, drive, cmd):
>>          '''Write to a given drive using an HMP command'''
>> @@ -793,16 +805,18 @@ def dictpath(self, d, path):
>>                  idx = int(idx)
>>  
>>              if not isinstance(d, dict) or component not in d:
>> -                self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
>> +                self.fail(f'failed path traversal for "{path}" in "{d}"')
> 
> Do we require 3.6 so that f-strings are guaranteed to work?  (I thought
> we didn’t.  I’d be happy to use them.)

Oh.  Of course we do.  It says so in this file that this whole series is
about.

Max


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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 11/11] iotests: use python logging for iotests.log()
  2020-03-17  0:41 ` [PATCH v8 11/11] iotests: use python logging for iotests.log() John Snow
@ 2020-03-24 16:14   ` Max Reitz
  0 siblings, 0 replies; 26+ messages in thread
From: Max Reitz @ 2020-03-24 16:14 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 2078 bytes --]

On 17.03.20 01:41, John Snow wrote:
> We can turn logging on/off globally instead of per-function.
> 
> Remove use_log from run_job, and use python logging to turn on
> diffable output when we run through a script entry point.
> 
> iotest 245 changes output order due to buffering reasons.
> 
> 
> An extended note on python logging:

Thanks!

> A NullHandler is added to `qemu.iotests` to stop output from being
> generated if this code is used as a library without configuring logging.
> A NullHandler is only needed at the root, so a duplicate handler is not
> needed for `qemu.iotests.diff_io`.
> 
> When logging is not configured, messages at the 'WARNING' levels or
> above are printed with default settings. The NullHandler stops this from
> occurring, which is considered good hygiene for code used as a library.
> 
> See https://docs.python.org/3/howto/logging.html#library-config
> 
> When logging is actually enabled (always at the behest of an explicit
> call by a client script), a root logger is implicitly created at the
> root, which allows messages to propagate upwards and be handled/emitted
> from the root logger with default settings.
> 
> When we want iotest logging, we attach a handler to the
> qemu.iotests.diff_io logger and disable propagation to avoid possible
> double-printing.
> 
> For more information on python logging infrastructure, I highly
> recommend downloading the pip package `logging_tree`, which provides
> convenient visualizations of the hierarchical logging configuration
> under different circumstances.
> 
> See https://pypi.org/project/logging_tree/ for more information.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  tests/qemu-iotests/030        |  4 +--
>  tests/qemu-iotests/155        |  2 +-
>  tests/qemu-iotests/245        |  1 +
>  tests/qemu-iotests/245.out    | 24 ++++++++--------
>  tests/qemu-iotests/iotests.py | 53 ++++++++++++++++++++---------------
>  5 files changed, 46 insertions(+), 38 deletions(-)

Reviewed-by: Max Reitz <mreitz@redhat.com>


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^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 06/11] iotests: drop Python 3.4 compatibility code
  2020-03-24 14:54   ` Max Reitz
@ 2020-03-24 16:57     ` John Snow
  0 siblings, 0 replies; 26+ messages in thread
From: John Snow @ 2020-03-24 16:57 UTC (permalink / raw)
  To: Max Reitz, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru



On 3/24/20 10:54 AM, Max Reitz wrote:
> On 17.03.20 01:41, John Snow wrote:
>> We no longer need to accommodate 3.4, drop this code.
> 
> Pre-3.4, actually.
> 
>> (Also, the line is over 79 characters, so drop it.)
>>
>> Touch up the docstring a little bit while we're here.
>>
>> Signed-off-by: John Snow <jsnow@redhat.com>
>> ---
>>  tests/qemu-iotests/iotests.py | 14 +++++++-------
>>  1 file changed, 7 insertions(+), 7 deletions(-)
>>
>> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
>> index 7cd74e7cb1..3d90fb157d 100644
>> --- a/tests/qemu-iotests/iotests.py
>> +++ b/tests/qemu-iotests/iotests.py
>> @@ -22,6 +22,7 @@
>>  import unittest
>>  import sys
>>  import struct
>> +from typing import Optional
>>  import json
>>  import signal
>>  import logging
>> @@ -350,18 +351,17 @@ def _filter(_key, value):
>>          return value
>>      return filter_qmp(qmsg, _filter)
>>  
>> -def log(msg, filters=(), indent=None):
>> -    '''Logs either a string message or a JSON serializable message (like QMP).
>> -    If indent is provided, JSON serializable messages are pretty-printed.'''
>> +def log(msg, filters=(), indent: Optional[int] = None) -> None:
>> +    """
>> +    Logs either a string message or a JSON serializable message (like QMP).
>> +    If indent is provided, JSON serializable messages are pretty-printed.
>> +    """
> 
> I feel like I should complain about this unrelated (I think?) change,
> but I won’t.
> 

It just seemed like so little to have in its own little patch, and I
wasn't prepared to fix the docstrings in the whole file ...

... It will be a future patch that tidies up this whole file and drops
the missing-docstring ignore from pylintrc.

> Reviewed-by: Max Reitz <mreitz@redhat.com>
> 

Thanks.

>>      for flt in filters:
>>          msg = flt(msg)
>>      if isinstance(msg, (dict, list)):
>> -        # Python < 3.4 needs to know not to add whitespace when pretty-printing:
>> -        separators = (', ', ': ') if indent is None else (',', ': ')
>>          # Don't sort if it's already sorted
>>          do_sort = not isinstance(msg, OrderedDict)
>> -        print(json.dumps(msg, sort_keys=do_sort,
>> -                         indent=indent, separators=separators))
>> +        print(json.dumps(msg, sort_keys=do_sort, indent=indent))
>>      else:
>>          print(msg)
>>  
>>
> 
> 



^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 07/11] iotests: limit line length to 79 chars
  2020-03-24 15:12     ` Max Reitz
@ 2020-03-24 17:09       ` John Snow
  2020-03-24 17:38         ` Max Reitz
  0 siblings, 1 reply; 26+ messages in thread
From: John Snow @ 2020-03-24 17:09 UTC (permalink / raw)
  To: Max Reitz, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru



On 3/24/20 11:12 AM, Max Reitz wrote:
> On 24.03.20 16:02, Max Reitz wrote:
>> On 17.03.20 01:41, John Snow wrote:
>>> 79 is the PEP8 recommendation. This recommendation works well for
>>> reading patch diffs in TUI email clients.
>>
>> Also for my very GUI-y diff program (kompare).
>>
>>> Signed-off-by: John Snow <jsnow@redhat.com>
>>> ---
>>>  tests/qemu-iotests/iotests.py | 64 +++++++++++++++++++++++------------
>>>  tests/qemu-iotests/pylintrc   |  6 +++-
>>>  2 files changed, 47 insertions(+), 23 deletions(-)
>>>
>>> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
>>> index 3d90fb157d..75fd697d77 100644
>>> --- a/tests/qemu-iotests/iotests.py
>>> +++ b/tests/qemu-iotests/iotests.py
>>
>> [...]
>>
>>> @@ -529,11 +539,13 @@ def pause_drive(self, drive, event=None):
>>>              self.pause_drive(drive, "write_aio")
>>>              return
>>>          self.qmp('human-monitor-command',
>>> -                 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
>>> +                 command_line='qemu-io %s "break %s bp_%s"'
>>> +                 % (drive, event, drive))
>>
>> Can we put this value in a variable instead?  I don’t like the %
>> aligning with the parameter name instead of the string value.  (I also
>> don’t like how there are no spaces around the assignment =, but around
>> the %, even though the % binds more strongly.)
>>
>>>  

I think I had another patch somewhere that added an HMP helper that
fixes this issue for this particular instance.

I can send that separately as a follow-up. I think otherwise,
unfortunately, "we" "decided" that this indent style is "best".

So I think that this patch is "correct".


(All of the other options for indent styles seemed to be worse visually,
or actively go against PEP8. While PEP8 is not a bible, every conscious
choice to disregard it generally means you will be fighting a CQA tool
at some other point in time. I have therefore adopted a "When in Rome"
policy to reduce friction wherever possible with pylint, flake8, mypy,
pycharm, and so on.)


((I would prefer we begin to deprecate uses of % and begin using
.format() and f-strings wherever possible to help alleviate this kind of
syntax, too -- but I must insist that's for another series.))


>>>      def resume_drive(self, drive):
>>>          self.qmp('human-monitor-command',
>>> -                 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
>>> +                 command_line='qemu-io %s "remove_break bp_%s"'
>>> +                 % (drive, drive))
>>>  
>>>      def hmp_qemu_io(self, drive, cmd):
>>>          '''Write to a given drive using an HMP command'''
>>> @@ -793,16 +805,18 @@ def dictpath(self, d, path):
>>>                  idx = int(idx)
>>>  
>>>              if not isinstance(d, dict) or component not in d:
>>> -                self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
>>> +                self.fail(f'failed path traversal for "{path}" in "{d}"')
>>
>> Do we require 3.6 so that f-strings are guaranteed to work?  (I thought
>> we didn’t.  I’d be happy to use them.)
> 
> Oh.  Of course we do.  It says so in this file that this whole series is
> about.
> 

Yup. I didn't like the idea of iotests using a newer version of python
than our build system, but my concern was not shared, so we get to use
f-strings for non-buildtime tools.

End of support for Python 3.5 will be 2020-09-13; so we'll get to use
f-strings everywhere else soon, too.

--js



^ permalink raw reply	[flat|nested] 26+ messages in thread

* Re: [PATCH v8 07/11] iotests: limit line length to 79 chars
  2020-03-24 17:09       ` John Snow
@ 2020-03-24 17:38         ` Max Reitz
  0 siblings, 0 replies; 26+ messages in thread
From: Max Reitz @ 2020-03-24 17:38 UTC (permalink / raw)
  To: John Snow, qemu-devel; +Cc: Kevin Wolf, ehabkost, qemu-block, philmd, armbru


[-- Attachment #1.1: Type: text/plain, Size: 2939 bytes --]

On 24.03.20 18:09, John Snow wrote:
> 
> 
> On 3/24/20 11:12 AM, Max Reitz wrote:
>> On 24.03.20 16:02, Max Reitz wrote:
>>> On 17.03.20 01:41, John Snow wrote:
>>>> 79 is the PEP8 recommendation. This recommendation works well for
>>>> reading patch diffs in TUI email clients.
>>>
>>> Also for my very GUI-y diff program (kompare).
>>>
>>>> Signed-off-by: John Snow <jsnow@redhat.com>
>>>> ---
>>>>  tests/qemu-iotests/iotests.py | 64 +++++++++++++++++++++++------------
>>>>  tests/qemu-iotests/pylintrc   |  6 +++-
>>>>  2 files changed, 47 insertions(+), 23 deletions(-)
>>>>
>>>> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
>>>> index 3d90fb157d..75fd697d77 100644
>>>> --- a/tests/qemu-iotests/iotests.py
>>>> +++ b/tests/qemu-iotests/iotests.py
>>>
>>> [...]
>>>
>>>> @@ -529,11 +539,13 @@ def pause_drive(self, drive, event=None):
>>>>              self.pause_drive(drive, "write_aio")
>>>>              return
>>>>          self.qmp('human-monitor-command',
>>>> -                 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
>>>> +                 command_line='qemu-io %s "break %s bp_%s"'
>>>> +                 % (drive, event, drive))
>>>
>>> Can we put this value in a variable instead?  I don’t like the %
>>> aligning with the parameter name instead of the string value.  (I also
>>> don’t like how there are no spaces around the assignment =, but around
>>> the %, even though the % binds more strongly.)
>>>
>>>>  
> 
> I think I had another patch somewhere that added an HMP helper that
> fixes this issue for this particular instance.
> 
> I can send that separately as a follow-up. I think otherwise,
> unfortunately, "we" "decided" that this indent style is "best".
> 
> So I think that this patch is "correct".

Perhaps it’s the best if we assume that we had to do it this way, but
can’t we just do a

qemu_io_cmd = f'qemu-io {drive} "break {event} bp_{drive}"'
self.qmp('human-monitor-command', command_line=qemu_io_cmd)

?

(Or maybe an f-string inline.  I was thinking of a separate variable
because I wasn’t aware that f-strings would be an option until I got to
later hunks of this patch...)

> (All of the other options for indent styles seemed to be worse visually,
> or actively go against PEP8. While PEP8 is not a bible, every conscious
> choice to disregard it generally means you will be fighting a CQA tool
> at some other point in time. I have therefore adopted a "When in Rome"
> policy to reduce friction wherever possible with pylint, flake8, mypy,
> pycharm, and so on.)
> 
> 
> ((I would prefer we begin to deprecate uses of % and begin using
> .format() and f-strings wherever possible to help alleviate this kind of
> syntax, too -- but I must insist that's for another series.))

Hm.  But you do change something to f-strings below, why not here?

Max


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^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2020-03-24 17:39 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-03-17  0:40 [PATCH v8 00/11] iotests: use python logging John Snow
2020-03-17  0:40 ` [PATCH v8 01/11] iotests: do a light delinting John Snow
2020-03-24 13:56   ` Max Reitz
2020-03-17  0:40 ` [PATCH v8 02/11] iotests: don't use 'format' for drive_add John Snow
2020-03-17  0:40 ` [PATCH v8 03/11] iotests: ignore import warnings from pylint John Snow
2020-03-17 10:38   ` Philippe Mathieu-Daudé
2020-03-24 14:02   ` Max Reitz
2020-03-17  0:40 ` [PATCH v8 04/11] iotests: replace mutable list default args John Snow
2020-03-24 14:35   ` Max Reitz
2020-03-17  0:40 ` [PATCH v8 05/11] iotests: add pylintrc file John Snow
2020-03-24 14:47   ` Max Reitz
2020-03-17  0:41 ` [PATCH v8 06/11] iotests: drop Python 3.4 compatibility code John Snow
2020-03-24 14:54   ` Max Reitz
2020-03-24 16:57     ` John Snow
2020-03-17  0:41 ` [PATCH v8 07/11] iotests: limit line length to 79 chars John Snow
2020-03-17 10:36   ` Philippe Mathieu-Daudé
2020-03-17 13:48     ` John Snow
2020-03-24 15:02   ` Max Reitz
2020-03-24 15:12     ` Max Reitz
2020-03-24 17:09       ` John Snow
2020-03-24 17:38         ` Max Reitz
2020-03-17  0:41 ` [PATCH v8 08/11] iotests: add script_initialize John Snow
2020-03-17  0:41 ` [PATCH v8 09/11] iotest 258: use script_main John Snow
2020-03-17  0:41 ` [PATCH v8 10/11] iotests: Mark verify functions as private John Snow
2020-03-17  0:41 ` [PATCH v8 11/11] iotests: use python logging for iotests.log() John Snow
2020-03-24 16:14   ` Max Reitz

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