[Buildroot] [PATCH 1/3] support/testing: replace nose2 with pytest - Dockerfile

[Buildroot] [PATCH 1/3] support/testing: replace nose2 with pytest - Dockerfile

[Oguz Ozhan]

Signed-off-by: Oguz Ozhan <oguz.ozhan@mind.be>
---
 support/docker/Dockerfile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/support/docker/Dockerfile b/support/docker/Dockerfile
index f54c31b54a..fd1527b1f9 100644
--- a/support/docker/Dockerfile
+++ b/support/docker/Dockerfile
@@ -38,8 +38,8 @@ RUN apt-get install -y --no-install-recommends \
         mercurial \
         openssh-server \
         python3 \
+        python3-pip \
         python3-flake8 \
-        python3-nose2 \
         python3-pexpect \
         python3-pytest \
         qemu-system-arm \
@@ -53,6 +53,9 @@ RUN apt-get install -y --no-install-recommends \
     apt-get -y autoremove && \
     apt-get -y clean
 
+# To be able to run tests in parallel
+RUN pip install pytest-parallel
+
 # To be able to generate a toolchain with locales, enable one UTF-8 locale
 RUN sed -i 's/# \(en_US.UTF-8\)/\1/' /etc/locale.gen && \
     /usr/sbin/locale-gen
-- 
2.34.1

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[Buildroot] [PATCH 2/3] support/testing: replace nose2 with pytest - run-tests

[Oguz Ozhan]

Signed-off-by: Oguz Ozhan <oguz.ozhan@mind.be>
---
 support/testing/conf/unittest.cfg        |  3 --
 support/testing/run-tests                | 28 ++++++++++-------
 support/testing/tests/fs/test_iso9660.py | 40 ++++++++++++------------
 3 files changed, 36 insertions(+), 35 deletions(-)

diff --git a/support/testing/conf/unittest.cfg b/support/testing/conf/unittest.cfg
index 4f516fb80a..0dfffcfbda 100644
--- a/support/testing/conf/unittest.cfg
+++ b/support/testing/conf/unittest.cfg
@@ -1,5 +1,2 @@
-[unittest]
-plugins = nose2.plugins.mp
-
 [multiprocess]
 always-on = True
diff --git a/support/testing/run-tests b/support/testing/run-tests
index bf40019362..f887bc6715 100755
--- a/support/testing/run-tests
+++ b/support/testing/run-tests
@@ -4,10 +4,16 @@ import multiprocessing
 import os
 import sys
 
-import nose2
+import pytest
 
 from infra.basetest import BRConfigTest
 
+class PyTestCollector:
+    def __init__(self):
+        self.collected = []
+    def pytest_collection_modifyitems(self, items):
+        for item in items:
+            self.collected.append(item.nodeid)
 
 def main():
     parser = argparse.ArgumentParser(description='Run Buildroot tests')
@@ -42,12 +48,10 @@ def main():
         BRConfigTest.logtofile = False
 
     if args.list:
-        print("List of tests")
-        nose2.discover(argv=[script_path,
-                             "-s", test_dir,
-                             "-v",
-                             "--collect-only"],
-                       plugins=["nose2.plugins.collect"])
+        collect_plugin = PyTestCollector()
+        pytest.main(['--collect-only', '-p', 'no:terminal', test_dir], plugins=[collect_plugin])
+        for nodeid in collect_plugin.collected:
+            print(nodeid)
         return 0
 
     if args.download is None:
@@ -106,15 +110,15 @@ def main():
         return 1
     BRConfigTest.timeout_multiplier = args.timeout_multiplier
 
-    nose2_args = ["-v",
-                  "-N", str(args.testcases),
-                  "-s", test_dir,
+    pytest_args = ["--workers", str(args.testcases),
+                  "--rootdir", test_dir,
                   "-c", os.path.join(test_dir, "conf/unittest.cfg")]
 
     if args.testname:
-        nose2_args += args.testname
+        pytest_args += args.testname
+
+    pytest.main(pytest_args)
 
-    nose2.discover(argv=nose2_args)
 
 
 if __name__ == "__main__":
diff --git a/support/testing/tests/fs/test_iso9660.py b/support/testing/tests/fs/test_iso9660.py
index 692291267e..d2390cccf1 100644
--- a/support/testing/tests/fs/test_iso9660.py
+++ b/support/testing/tests/fs/test_iso9660.py
@@ -25,7 +25,7 @@ BASIC_CONFIG = \
     """.format(infra.filepath("conf/minimal-x86-qemu-kernel.config"))
 
 
-def test_mount_internal_external(emulator, builddir, internal=True, efi=False):
+def do_test_mount_internal_external(emulator, builddir, internal=True, efi=False):
     img = os.path.join(builddir, "images", "rootfs.iso9660")
     if efi:
         efi_img = os.path.join(builddir, "images", "OVMF.fd")
@@ -43,7 +43,7 @@ def test_mount_internal_external(emulator, builddir, internal=True, efi=False):
     return exit_code
 
 
-def test_touch_file(emulator):
+def do_test_touch_file(emulator):
     _, exit_code = emulator.run("touch test")
     return exit_code
 
@@ -63,11 +63,11 @@ class TestIso9660Grub2External(infra.basetest.BRTest):
         """.format(infra.filepath("conf/grub2.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=False)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 1)
 
 
@@ -84,11 +84,11 @@ class TestIso9660Grub2ExternalCompress(infra.basetest.BRTest):
         """.format(infra.filepath("conf/grub2.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=False)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 1)
 
 
@@ -104,11 +104,11 @@ class TestIso9660Grub2Internal(infra.basetest.BRTest):
         """.format(infra.filepath("conf/grub2.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=True)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 0)
 
 
@@ -127,12 +127,12 @@ class TestIso9660Grub2EFI(infra.basetest.BRTest):
                    infra.filepath("conf/grub2.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=True,
                                                  efi=True)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 0)
 
 
@@ -155,22 +155,22 @@ class TestIso9660Grub2Hybrid(infra.basetest.BRTest):
                    infra.filepath("conf/grub2.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=True,
                                                  efi=False)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 0)
 
         self.emulator.stop()
 
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=True,
                                                  efi=True)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 0)
 
 
@@ -189,11 +189,11 @@ class TestIso9660SyslinuxExternal(infra.basetest.BRTest):
         """.format(infra.filepath("conf/isolinux.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=False)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 1)
 
 
@@ -209,11 +209,11 @@ class TestIso9660SyslinuxExternalCompress(infra.basetest.BRTest):
         """.format(infra.filepath("conf/isolinux.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=False)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 1)
 
 
@@ -228,9 +228,9 @@ class TestIso9660SyslinuxInternal(infra.basetest.BRTest):
         """.format(infra.filepath("conf/isolinux.cfg"))
 
     def test_run(self):
-        exit_code = test_mount_internal_external(self.emulator,
+        exit_code = do_test_mount_internal_external(self.emulator,
                                                  self.builddir, internal=True)
         self.assertEqual(exit_code, 0)
 
-        exit_code = test_touch_file(self.emulator)
+        exit_code = do_test_touch_file(self.emulator)
         self.assertEqual(exit_code, 0)
-- 
2.34.1

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[Buildroot] [PATCH 3/3] support/testing: replace nose2 with pytest - CI

[Oguz Ozhan]

Signed-off-by: Oguz Ozhan <oguz.ozhan@mind.be>
---
 support/scripts/generate-gitlab-ci-yml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/support/scripts/generate-gitlab-ci-yml b/support/scripts/generate-gitlab-ci-yml
index aa43aac019..bb4dcbbb22 100755
--- a/support/scripts/generate-gitlab-ci-yml
+++ b/support/scripts/generate-gitlab-ci-yml
@@ -31,7 +31,6 @@ gen_tests() {
     defconfigs=( $(cd configs; LC_ALL=C ls -1 *_defconfig) )
 
     runtimes=( $(./support/testing/run-tests -l 2>&1 \
-                 | sed -r -e '/^test_run \((.*)\).*/!d; s//\1/' \
                  | LC_ALL=C sort)
              )
 
@@ -80,7 +79,6 @@ gen_tests() {
             ;;
           (*-tests.*)
             runtimes=( $(./support/testing/run-tests -l 2>&1 \
-                         | sed -r -e '/^test_run \((.*)\).*/!d; s//\1/' \
                          | LC_ALL=C sort \
                          | grep "^${CI_COMMIT_REF_NAME##*-}")
                      )
-- 
2.34.1

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Re: [Buildroot] [PATCH 1/3] support/testing: replace nose2 with pytest - Dockerfile

[Thomas Petazzoni via buildroot]

Hello Oguz,

On Wed, 19 Oct 2022 23:57:39 +0200
Oguz Ozhan <oguz.ozhan@mind.be> wrote:

> Signed-off-by: Oguz Ozhan <oguz.ozhan@mind.be>

Thanks a lot for your patch series. However, all commit logs are empty.
What is the rationale/motivation for the changes in this patch series?
Why is pytest better than nose2? Could you send a new iteration with a
detailed commit log for each commit that explains the motivation for
the change, and also describes the change itself, especially in PATCH
2/3, where test cases see changes. BTW, these changes in test cases
could be done in a separate preparation commit, as they would still
work with nose2 I believe.

Also another concern is that the series is not really bisectable, but
admittedly I'm not sure it's easy to achieve without doing all the
changes in one single patch.

Best regards,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [PATCH 1/3] support/testing: replace nose2 with pytest - Dockerfile

[Oguz Ozhan]

[-- Attachment #1.1: Type: text/plain, Size: 1231 bytes --]

Hi Thomas.

Thanks a lot for your comments.

I inserted more information in the commit logs and re-sent the patches.

KR.

Oguz


On Fri, Oct 21, 2022 at 9:44 AM Thomas Petazzoni <
thomas.petazzoni@bootlin.com> wrote:

> Hello Oguz,
>
> On Wed, 19 Oct 2022 23:57:39 +0200
> Oguz Ozhan <oguz.ozhan@mind.be> wrote:
>
> > Signed-off-by: Oguz Ozhan <oguz.ozhan@mind.be>
>
> Thanks a lot for your patch series. However, all commit logs are empty.
> What is the rationale/motivation for the changes in this patch series?
> Why is pytest better than nose2? Could you send a new iteration with a
> detailed commit log for each commit that explains the motivation for
> the change, and also describes the change itself, especially in PATCH
> 2/3, where test cases see changes. BTW, these changes in test cases
> could be done in a separate preparation commit, as they would still
> work with nose2 I believe.
>
> Also another concern is that the series is not really bisectable, but
> admittedly I'm not sure it's easy to achieve without doing all the
> changes in one single patch.
>
> Best regards,
>
> Thomas
> --
> Thomas Petazzoni, co-owner and CEO, Bootlin
> Embedded Linux and Kernel engineering and training
> https://bootlin.com
>

[-- Attachment #1.2: Type: text/html, Size: 1916 bytes --]

[-- Attachment #2: Type: text/plain, Size: 150 bytes --]

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Re: [Buildroot] [PATCH 1/3] support/testing: replace nose2 with pytest - Dockerfile

[Ricardo Martincoski]

[-- Attachment #1: Type: text/plain, Size: 4435 bytes --]

Hello,

I am not against to switch to pytest.
But I didn't understand clearly yet the use case that motivated this series, in
which nose2 is not good and pytest is better. Could you elaborate?

Also, there are issues to be addressed before merging this series:
- the detection of a failed test on GitLab CI is broken, even tests failing
  return exit code 0, so GitLab infra mark them as PASS, see [1];
- run-tests -s is broken (does not show the build and runtime console);
- support to ask a single runtime test to run on GitLab CI is broken due to a
  regexp that needs to be adapted;
- the manual needs to be updated.

There are also some changes in behavior that would be nice to be highlighted:
- someone willing to find a test in the output of run-tests -l can do:
nose2:  run-tests -l 2>&1 | grep pattern
pytest: run-tests -l | grep pattern
- total number of tests:
nose2:  run-tests -l prints the number of tests at the end "Ran 481 tests"
pytest: run-tests -l does not
- the name of tests change (list)
nose2:  test_run (tests.toolchain.test_external_bootlin.\
        TestExternalToolchainBootlinPowerpc64lepower8GlibcBleedingEdge) ... ok
pytest: support/testing/tests/toolchain/test_external_bootlin.py::\
        TestExternalToolchainBootlinPowerpc64lepower8GlibcBleedingEdge::test_run
- the name of tests change (local run)
nose2:  support/testing/run-tests tests.init.test_busybox \
        tests.package.test_php_lua.TestPhpLuaLuajit
pytest: support/testing/run-tests support/testing/tests/init/test_busybox.py \
        support/testing/tests/package/test_php_lua.py::TestPhpLuaLua
- the name of tests change (gitlab test suite)
nose2:  git push gitlab HEAD:foo-tests.init.test_busybox
        see [2]
pytest: git push gitlab HEAD:foo-support/testing/tests/init/test_busybox.py
        see [3]
- the name of tests change (gitlab test case)
nose2:  git push gitlab HEAD:foo-tests.package.test_php_lua.TestPhpLuaLuajit
        see [4]
pytest: git push gitlab \
        HEAD:foo-support/testing/tests/package/test_php_lua.py--TestPhpLuaLuajit
        see [5]
        NOTICE: the use of '--' is just the first solution that came to mind.
- the name of tests are longer, so in the GitLab CI the display is a bit worse:
nose2:  tests.init.test_busybox.TestInitSystemBusyboxRo
        tests.init.test_busybox.TestInitSystemBusybox...
        tests.init.test_busybox.TestInitSystemBusybox...
        tests.init.test_busybox.TestInitSystemBusybox...
        tests.package.test_php_lua.TestPhpLuaLua
        tests.package.test_php_lua.TestPhpLuaLuajit
pytest: support/testing/tests/init/test_busybox.py::Tes...
        support/testing/tests/init/test_busybox.py::Tes...
        support/testing/tests/init/test_busybox.py::Tes...
        support/testing/tests/init/test_busybox.py::Tes...
        support/testing/tests/package/test_php_lua.p...
        support/testing/tests/package/test_php_lua.p...
- bash completion for the name of a test suite
nose2:  no completion
        support/testing/run-tests tests.init.test_busybox
pytest: since it uses the path as the begin of test name one can type
        'support/testing/run-tests support/testing' and use bash completion for
        test files names:
        support/testing/run-tests support/testing/tests/init/test_busybox.py
- cache of results
nose2:  no cache
pytest: it creates a .pytest_cache/ with a cache of the results, so we could
        later expose another parameter in run-tests that passes '-lf' to pytest,
        which will re-run only the tests that failed on last run
- verbosity when collecting tests:
nose2:  no output
pytest: prints a summary 'collected 1 item'
        'pytest-parallel: 1 worker (process), 1 test per worker (thread)'
- verbosity while tests are running:
nose2:  show states for each test (Starting, Building)
pytest: shows nothing before each test ends
- verbosity when tests fail:
nose2:  verbose
pytest: more verbose than nose2
- verbosity when tests pass:
nose2:  show states for each test (Starting, Building)
pytest: show only a '.' for each test

[1] https://gitlab.com/RicardoMartincoski/buildroot/-/jobs/3248620433
[2] https://gitlab.com/RicardoMartincoski/buildroot/-/pipelines/680878149
[3] https://gitlab.com/RicardoMartincoski/buildroot/-/pipelines/680879324
[4] https://gitlab.com/RicardoMartincoski/buildroot/-/pipelines/680879308
[5] https://gitlab.com/RicardoMartincoski/buildroot/-/pipelines/680878335

Regards,
Ricardo

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Re: [Buildroot] [PATCH 1/3] support/testing: replace nose2 with pytest - Dockerfile

[Yann E. MORIN]

Oguz, All,

On 2022-10-21 11:15 +0200, Oguz Ozhan spake thusly:
> From: Oguz Ozhan <oguz.ozhan@mind.com>
> 
> - From web page of nose2:
> (https://docs.nose2.io/en/latest/)
> nose2 vs pytest:
>   - pytest is an excellent test framework and we encourage users to consider it for new projects.
>   - It has a bigger team of maintainers and a larger community of users.

This clearly states "for new projects", but we are not new! ;-)

Why do we need to switch to pytest, and what does that bring us? (see
below too)

> - pytest is more robust and has more ability compared to nose2

You provide robustness and more abilities to advocate for switching to
pytest, however, you do not explain what is currently broken that would
be fixed by the pytest robustness, or what new features from pytest we
could leverage, and how.

Note that I am not opposed to switching, but we need a good rationale
for switching.

This commit should also come after we actually did the switch, i.e. we
should first convert support/testing/ over to pytest, then modify the
dockerfile accordingly, which allows to write a better coomit log.

Also, please organise your commit logs as (first line is the title):

    support/docker: install pytest instead of nose2

    Now that the tuntime test infra has switched to using pytest instead
    of nose2, install the appropriate packages in the Dockerfile for our
    reference build environment.

    Note that pytest-parallel is not available i Debian Bullseye, so we
    install it (and its depenencies) from Pypi instead.

    Signed-off-by: You

See more below...

> Signed-off-by: Oguz Ozhan <oguz.ozhan@mind.be>
> ---
>  support/docker/Dockerfile | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/support/docker/Dockerfile b/support/docker/Dockerfile
> index f54c31b54a..fd1527b1f9 100644
> --- a/support/docker/Dockerfile
> +++ b/support/docker/Dockerfile
> @@ -38,8 +38,8 @@ RUN apt-get install -y --no-install-recommends \
>          mercurial \
>          openssh-server \
>          python3 \
> +        python3-pip \
>          python3-flake8 \
> -        python3-nose2 \
>          python3-pexpect \
>          python3-pytest \
>          qemu-system-arm \
> @@ -53,6 +53,9 @@ RUN apt-get install -y --no-install-recommends \
>      apt-get -y autoremove && \
>      apt-get -y clean
>  
> +# To be able to run tests in parallel
> +RUN pip install pytest-parallel

Please, pin the version so that the image is reproducible.

Also, if pytest-parallel has dependencies, explicitly install those at
pinned versions too.

Also note in the commit log that pytest-parallel is not available in
bullseye, so we need to get it from Pypi instead (as in my suggestion).

Regards,
Yann E. MORIN.

>  # To be able to generate a toolchain with locales, enable one UTF-8 locale
>  RUN sed -i 's/# \(en_US.UTF-8\)/\1/' /etc/locale.gen && \
>      /usr/sbin/locale-gen
> -- 
> 2.34.1
> 
> _______________________________________________
> buildroot mailing list
> buildroot@buildroot.org
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-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 561 099 427 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'
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[Buildroot] [PATCH 1/3] support/testing: replace nose2 with pytest - Dockerfile

[Oguz Ozhan]

From: Oguz Ozhan <oguz.ozhan@mind.com>

- From web page of nose2:
(https://docs.nose2.io/en/latest/)
nose2 vs pytest:
  - pytest is an excellent test framework and we encourage users to consider it for new projects.
  - It has a bigger team of maintainers and a larger community of users.

- pytest is more robust and has more ability compared to nose2

Signed-off-by: Oguz Ozhan <oguz.ozhan@mind.be>
---
 support/docker/Dockerfile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/support/docker/Dockerfile b/support/docker/Dockerfile
index f54c31b54a..fd1527b1f9 100644
--- a/support/docker/Dockerfile
+++ b/support/docker/Dockerfile
@@ -38,8 +38,8 @@ RUN apt-get install -y --no-install-recommends \
         mercurial \
         openssh-server \
         python3 \
+        python3-pip \
         python3-flake8 \
-        python3-nose2 \
         python3-pexpect \
         python3-pytest \
         qemu-system-arm \
@@ -53,6 +53,9 @@ RUN apt-get install -y --no-install-recommends \
     apt-get -y autoremove && \
     apt-get -y clean
 
+# To be able to run tests in parallel
+RUN pip install pytest-parallel
+
 # To be able to generate a toolchain with locales, enable one UTF-8 locale
 RUN sed -i 's/# \(en_US.UTF-8\)/\1/' /etc/locale.gen && \
     /usr/sbin/locale-gen
-- 
2.34.1

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