[U-Boot] [PATCH V2 6/7] test/py: test the shell if command

[Stephen Warren <swarren@wwwdotorg.org>]

From: Stephen Warren <swarren@nvidia.com>

Migrate all most tests from command_ut.c into the Python test system.
This allows the tests to be run against any U-Boot binary that supports
the if command (i.e. where hush is enabled) without requiring that
binary to be permanently bloated with the code from command_ut.

Some tests in command_ut.c can only be executed from C code, since they
test internal (more unit-level) features of various U-Boot APIs. The
migrated tests can all operate directly from the U-Boot console.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
---
 test/command_ut.c            | 133 ----------------------------------------
 test/py/test_hush_if_test.py | 141 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 141 insertions(+), 133 deletions(-)
 create mode 100644 test/py/test_hush_if_test.py

diff --git a/test/command_ut.c b/test/command_ut.c
index 926573a39543..35bd35ae2e30 100644
--- a/test/command_ut.c
+++ b/test/command_ut.c
@@ -20,21 +20,6 @@ static int do_ut_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	printf("%s: Testing commands\n", __func__);
 	run_command("env default -f -a", 0);
 
-	/* run a single command */
-	run_command("setenv single 1", 0);
-	assert(!strcmp("1", getenv("single")));
-
-	/* make sure that compound statements work */
-#ifdef CONFIG_SYS_HUSH_PARSER
-	run_command("if test -n ${single} ; then setenv check 1; fi", 0);
-	assert(!strcmp("1", getenv("check")));
-	run_command("setenv check", 0);
-#endif
-
-	/* commands separated by ; */
-	run_command_list("setenv list 1; setenv list ${list}1", -1, 0);
-	assert(!strcmp("11", getenv("list")));
-
 	/* commands separated by \n */
 	run_command_list("setenv list 1\n setenv list ${list}1", -1, 0);
 	assert(!strcmp("11", getenv("list")));
@@ -43,11 +28,6 @@ static int do_ut_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	run_command_list("setenv list 1${list}\n", -1, 0);
 	assert(!strcmp("111", getenv("list")));
 
-	/* three commands in a row */
-	run_command_list("setenv list 1\n setenv list ${list}2; "
-		"setenv list ${list}3", -1, 0);
-	assert(!strcmp("123", getenv("list")));
-
 	/* a command string with \0 in it. Stuff after \0 should be ignored */
 	run_command("setenv list", 0);
 	run_command_list(test_cmd, sizeof(test_cmd), 0);
@@ -66,13 +46,6 @@ static int do_ut_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	assert(run_command_list("false", -1, 0) == 1);
 	assert(run_command_list("echo", -1, 0) == 0);
 
-	run_command("setenv foo 'setenv monty 1; setenv python 2'", 0);
-	run_command("run foo", 0);
-	assert(getenv("monty") != NULL);
-	assert(!strcmp("1", getenv("monty")));
-	assert(getenv("python") != NULL);
-	assert(!strcmp("2", getenv("python")));
-
 #ifdef CONFIG_SYS_HUSH_PARSER
 	run_command("setenv foo 'setenv black 1\nsetenv adder 2'", 0);
 	run_command("run foo", 0);
@@ -80,112 +53,6 @@ static int do_ut_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	assert(!strcmp("1", getenv("black")));
 	assert(getenv("adder") != NULL);
 	assert(!strcmp("2", getenv("adder")));
-
-	/* Test the 'test' command */
-
-#define HUSH_TEST(name, expr, expected_result) \
-	run_command("if test " expr " ; then " \
-			"setenv " #name "_" #expected_result " y; else " \
-			"setenv " #name "_" #expected_result " n; fi", 0); \
-	assert(!strcmp(#expected_result, getenv(#name "_" #expected_result))); \
-	setenv(#name "_" #expected_result, NULL);
-
-	/* Basic operators */
-	HUSH_TEST(streq, "aaa = aaa", y);
-	HUSH_TEST(streq, "aaa = bbb", n);
-
-	HUSH_TEST(strneq, "aaa != bbb", y);
-	HUSH_TEST(strneq, "aaa != aaa", n);
-
-	HUSH_TEST(strlt, "aaa < bbb", y);
-	HUSH_TEST(strlt, "bbb < aaa", n);
-
-	HUSH_TEST(strgt, "bbb > aaa", y);
-	HUSH_TEST(strgt, "aaa > bbb", n);
-
-	HUSH_TEST(eq, "123 -eq 123", y);
-	HUSH_TEST(eq, "123 -eq 456", n);
-
-	HUSH_TEST(ne, "123 -ne 456", y);
-	HUSH_TEST(ne, "123 -ne 123", n);
-
-	HUSH_TEST(lt, "123 -lt 456", y);
-	HUSH_TEST(lt_eq, "123 -lt 123", n);
-	HUSH_TEST(lt, "456 -lt 123", n);
-
-	HUSH_TEST(le, "123 -le 456", y);
-	HUSH_TEST(le_eq, "123 -le 123", y);
-	HUSH_TEST(le, "456 -le 123", n);
-
-	HUSH_TEST(gt, "456 -gt 123", y);
-	HUSH_TEST(gt_eq, "123 -gt 123", n);
-	HUSH_TEST(gt, "123 -gt 456", n);
-
-	HUSH_TEST(ge, "456 -ge 123", y);
-	HUSH_TEST(ge_eq, "123 -ge 123", y);
-	HUSH_TEST(ge, "123 -ge 456", n);
-
-	HUSH_TEST(z, "-z \"\"", y);
-	HUSH_TEST(z, "-z \"aaa\"", n);
-
-	HUSH_TEST(n, "-n \"aaa\"", y);
-	HUSH_TEST(n, "-n \"\"", n);
-
-	/* Inversion of simple tests */
-	HUSH_TEST(streq_inv, "! aaa = aaa", n);
-	HUSH_TEST(streq_inv, "! aaa = bbb", y);
-
-	HUSH_TEST(streq_inv_inv, "! ! aaa = aaa", y);
-	HUSH_TEST(streq_inv_inv, "! ! aaa = bbb", n);
-
-	/* Binary operators */
-	HUSH_TEST(or_0_0, "aaa != aaa -o bbb != bbb", n);
-	HUSH_TEST(or_0_1, "aaa != aaa -o bbb = bbb", y);
-	HUSH_TEST(or_1_0, "aaa = aaa -o bbb != bbb", y);
-	HUSH_TEST(or_1_1, "aaa = aaa -o bbb = bbb", y);
-
-	HUSH_TEST(and_0_0, "aaa != aaa -a bbb != bbb", n);
-	HUSH_TEST(and_0_1, "aaa != aaa -a bbb = bbb", n);
-	HUSH_TEST(and_1_0, "aaa = aaa -a bbb != bbb", n);
-	HUSH_TEST(and_1_1, "aaa = aaa -a bbb = bbb", y);
-
-	/* Inversion within binary operators */
-	HUSH_TEST(or_0_0_inv, "! aaa != aaa -o ! bbb != bbb", y);
-	HUSH_TEST(or_0_1_inv, "! aaa != aaa -o ! bbb = bbb", y);
-	HUSH_TEST(or_1_0_inv, "! aaa = aaa -o ! bbb != bbb", y);
-	HUSH_TEST(or_1_1_inv, "! aaa = aaa -o ! bbb = bbb", n);
-
-	HUSH_TEST(or_0_0_inv_inv, "! ! aaa != aaa -o ! ! bbb != bbb", n);
-	HUSH_TEST(or_0_1_inv_inv, "! ! aaa != aaa -o ! ! bbb = bbb", y);
-	HUSH_TEST(or_1_0_inv_inv, "! ! aaa = aaa -o ! ! bbb != bbb", y);
-	HUSH_TEST(or_1_1_inv_inv, "! ! aaa = aaa -o ! ! bbb = bbb", y);
-
-	setenv("ut_var_nonexistent", NULL);
-	setenv("ut_var_exists", "1");
-	HUSH_TEST(z_varexp_quoted, "-z \"$ut_var_nonexistent\"", y);
-	HUSH_TEST(z_varexp_quoted, "-z \"$ut_var_exists\"", n);
-	setenv("ut_var_exists", NULL);
-
-	run_command("setenv ut_var_space \" \"", 0);
-	assert(!strcmp(getenv("ut_var_space"), " "));
-	run_command("setenv ut_var_test $ut_var_space", 0);
-	assert(!getenv("ut_var_test"));
-	run_command("setenv ut_var_test \"$ut_var_space\"", 0);
-	assert(!strcmp(getenv("ut_var_test"), " "));
-	run_command("setenv ut_var_test \" 1${ut_var_space}${ut_var_space} 2 \"", 0);
-	assert(!strcmp(getenv("ut_var_test"), " 1   2 "));
-	setenv("ut_var_space", NULL);
-	setenv("ut_var_test", NULL);
-
-#ifdef CONFIG_SANDBOX
-	/* File existence */
-	HUSH_TEST(e, "-e hostfs - creating_this_file_breaks_uboot_unit_test", n);
-	run_command("sb save hostfs - creating_this_file_breaks_uboot_unit_test 0 1", 0);
-	HUSH_TEST(e, "-e hostfs - creating_this_file_breaks_uboot_unit_test", y);
-	/* Perhaps this could be replaced by an "rm" shell command one day */
-	assert(!os_unlink("creating_this_file_breaks_uboot_unit_test"));
-	HUSH_TEST(e, "-e hostfs - creating_this_file_breaks_uboot_unit_test", n);
-#endif
 #endif
 
 	assert(run_command("", 0) == 0);
diff --git a/test/py/test_hush_if_test.py b/test/py/test_hush_if_test.py
new file mode 100644
index 000000000000..e39e53613500
--- /dev/null
+++ b/test/py/test_hush_if_test.py
@@ -0,0 +1,141 @@
+# Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
+#
+# SPDX-License-Identifier: GPL-2.0
+
+import os
+import os.path
+import pytest
+
+subtests = (
+    # Base if functionality
+
+    ("true", True),
+    ("false", False),
+
+    # Basic operators
+
+    ("test aaa = aaa", True),
+    ("test aaa = bbb", False),
+
+    ("test aaa != bbb", True),
+    ("test aaa != aaa", False),
+
+    ("test aaa < bbb", True),
+    ("test bbb < aaa", False),
+
+    ("test bbb > aaa", True),
+    ("test aaa > bbb", False),
+
+    ("test 123 -eq 123", True),
+    ("test 123 -eq 456", False),
+
+    ("test 123 -ne 456", True),
+    ("test 123 -ne 123", False),
+
+    ("test 123 -lt 456", True),
+    ("test 123 -lt 123", False),
+    ("test 456 -lt 123", False),
+
+    ("test 123 -le 456", True),
+    ("test 123 -le 123", True),
+    ("test 456 -le 123", False),
+
+    ("test 456 -gt 123", True),
+    ("test 123 -gt 123", False),
+    ("test 123 -gt 456", False),
+
+    ("test 456 -ge 123", True),
+    ("test 123 -ge 123", True),
+    ("test 123 -ge 456", False),
+
+    ("test -z \"\"", True),
+    ("test -z \"aaa\"", False),
+
+    ("test -n \"aaa\"", True),
+    ("test -n \"\"", False),
+
+    # Inversion of simple tests
+
+    ("test ! aaa = aaa", False),
+    ("test ! aaa = bbb", True),
+    ("test ! ! aaa = aaa", True),
+    ("test ! ! aaa = bbb", False),
+
+    # Binary operators
+
+    ("test aaa != aaa -o bbb != bbb", False),
+    ("test aaa != aaa -o bbb = bbb", True),
+    ("test aaa = aaa -o bbb != bbb", True),
+    ("test aaa = aaa -o bbb = bbb", True),
+
+    ("test aaa != aaa -a bbb != bbb", False),
+    ("test aaa != aaa -a bbb = bbb", False),
+    ("test aaa = aaa -a bbb != bbb", False),
+    ("test aaa = aaa -a bbb = bbb", True),
+
+    # Inversion within binary operators
+
+    ("test ! aaa != aaa -o ! bbb != bbb", True),
+    ("test ! aaa != aaa -o ! bbb = bbb", True),
+    ("test ! aaa = aaa -o ! bbb != bbb", True),
+    ("test ! aaa = aaa -o ! bbb = bbb", False),
+
+    ("test ! ! aaa != aaa -o ! ! bbb != bbb", False),
+    ("test ! ! aaa != aaa -o ! ! bbb = bbb", True),
+    ("test ! ! aaa = aaa -o ! ! bbb != bbb", True),
+    ("test ! ! aaa = aaa -o ! ! bbb = bbb", True),
+
+    # -z operator
+
+    ("test -z \"$ut_var_nonexistent\"", True),
+    ("test -z \"$ut_var_exists\"", False),
+)
+
+def exec_hush_if(uboot_console, expr, result):
+    cmd = "if " + expr + "; then echo true; else echo false; fi"
+    response = uboot_console.run_command(cmd)
+    assert response.strip() == str(result).lower()
+
+ at pytest.mark.buildconfigspec("sys_hush_parser")
+def test_hush_if_test_setup(uboot_console):
+    uboot_console.run_command("setenv ut_var_nonexistent")
+    uboot_console.run_command("setenv ut_var_exists 1")
+
+ at pytest.mark.buildconfigspec("sys_hush_parser")
+ at pytest.mark.parametrize("expr,result", subtests)
+def test_hush_if_test(uboot_console, expr, result):
+    exec_hush_if(uboot_console, expr, result)
+
+ at pytest.mark.buildconfigspec("sys_hush_parser")
+def test_hush_if_test_teardown(uboot_console):
+    uboot_console.run_command("setenv ut_var_exists")
+
+ at pytest.mark.buildconfigspec("sys_hush_parser")
+# We might test this on real filesystems via UMS, DFU, "save", etc.
+# Of those, only UMS currently allows file removal though.
+ at pytest.mark.boardspec("sandbox")
+def test_hush_if_test_host_file_exists(uboot_console):
+    test_file = uboot_console.config.result_dir + \
+        "/creating_this_file_breaks_uboot_tests"
+
+    try:
+        os.unlink(test_file)
+    except:
+        pass
+    assert not os.path.exists(test_file)
+
+    expr = "test -e hostfs - " + test_file
+    exec_hush_if(uboot_console, expr, False)
+
+    try:
+        with file(test_file, "wb"):
+            pass
+        assert os.path.exists(test_file)
+
+        expr = "test -e hostfs - " + test_file
+        exec_hush_if(uboot_console, expr, True)
+    finally:
+        os.unlink(test_file)
+
+    expr = "test -e hostfs - " + test_file
+    exec_hush_if(uboot_console, expr, False)
-- 
2.6.3