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kunit: add example test case showing off all the expect macros

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Currently, these macros are only really documented near the bottom of
https://www.kernel.org/doc/html/latest/dev-tools/kunit/api/test.html#c.KUNIT_FAIL.

E.g. it's likely someone might just not realize that
KUNIT_EXPECT_STREQ() exists and instead use KUNIT_EXPECT_FALSE(strcmp())
or similar.

This can also serve as a basic smoketest that the KUnit assert machinery
still works for all the macros.

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Daniel Latypov 2022-01-13 08:59:26 -08:00 committed by Shuah Khan
parent e783362eb5
commit 7b3391057f
1 changed files with 42 additions and 0 deletions
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42
lib/kunit/kunit-example-test.c
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@ -69,6 +69,47 @@ static void example_mark_skipped_test(struct kunit *test)
/* This line should run */
kunit_info(test, "You should see this line.");
}
/*
* This test shows off all the types of KUNIT_EXPECT macros.
*/
static void example_all_expect_macros_test(struct kunit *test)
{
/* Boolean assertions */
KUNIT_EXPECT_TRUE(test, true);
KUNIT_EXPECT_FALSE(test, false);
/* Integer assertions */
KUNIT_EXPECT_EQ(test, 1, 1); /* check == */
KUNIT_EXPECT_GE(test, 1, 1); /* check >= */
KUNIT_EXPECT_LE(test, 1, 1); /* check <= */
KUNIT_EXPECT_NE(test, 1, 0); /* check != */
KUNIT_EXPECT_GT(test, 1, 0); /* check > */
KUNIT_EXPECT_LT(test, 0, 1); /* check < */
/* Pointer assertions */
KUNIT_EXPECT_NOT_ERR_OR_NULL(test, test);
KUNIT_EXPECT_PTR_EQ(test, NULL, NULL);
KUNIT_EXPECT_PTR_NE(test, test, NULL);
/* String assertions */
KUNIT_EXPECT_STREQ(test, "hi", "hi");
KUNIT_EXPECT_STRNEQ(test, "hi", "bye");
/*
* There are also ASSERT variants of all of the above that abort test
* execution if they fail. Useful for memory allocations, etc.
*/
KUNIT_ASSERT_GT(test, sizeof(char), 0);
/*
* There are also _MSG variants of all of the above that let you include
* additional text on failure.
*/
KUNIT_EXPECT_GT_MSG(test, sizeof(int), 0, "Your ints are 0-bit?!");
KUNIT_ASSERT_GT_MSG(test, sizeof(int), 0, "Your ints are 0-bit?!");
}
/*
* Here we make a list of all the test cases we want to add to the test suite
* below.
@ -83,6 +124,7 @@ static struct kunit_case example_test_cases[] = {
KUNIT_CASE(example_simple_test),
KUNIT_CASE(example_skip_test),
KUNIT_CASE(example_mark_skipped_test),
KUNIT_CASE(example_all_expect_macros_test),
{}
};