// SPDX-License-Identifier: GPL-2.0/* * KUnit test for the KUnit executor. * * Copyright (C) 2021, Google LLC. * Author: Daniel Latypov <dlatypov@google.com> */ #include <kunit/test.h> static void kfree_at_end(struct kunit *test, const void *to_free);static void free_subsuite_at_end(struct kunit *test,				 struct kunit_suite *const *to_free);static struct kunit_suite *alloc_fake_suite(struct kunit *test,					    const char *suite_name,					    struct kunit_case *test_cases); static void dummy_test(struct kunit *test) {} static struct kunit_case dummy_test_cases[] = {	/* .run_case is not important, just needs to be non-NULL */	{ .name = "test1", .run_case = dummy_test },	{ .name = "test2", .run_case = dummy_test },	{},}; static void parse_filter_test(struct kunit *test){	struct kunit_test_filter filter = {NULL, NULL}; 	kunit_parse_filter_glob(&filter, "suite");	KUNIT_EXPECT_STREQ(test, filter.suite_glob, "suite");	KUNIT_EXPECT_FALSE(test, filter.test_glob);	kfree(filter.suite_glob);	kfree(filter.test_glob); 	kunit_parse_filter_glob(&filter, "suite.test");	KUNIT_EXPECT_STREQ(test, filter.suite_glob, "suite");	KUNIT_EXPECT_STREQ(test, filter.test_glob, "test");	kfree(filter.suite_glob);	kfree(filter.test_glob);} static void filter_subsuite_test(struct kunit *test){	struct kunit_suite *subsuite[3] = {NULL, NULL, NULL};	struct kunit_suite * const *filtered;	struct kunit_test_filter filter = {		.suite_glob = "suite2",		.test_glob = NULL,	}; 	subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);	subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases); 	/* Want: suite1, suite2, NULL -> suite2, NULL */	filtered = kunit_filter_subsuite(subsuite, &filter);	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered);	free_subsuite_at_end(test, filtered); 	/* Validate we just have suite2 */	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered[0]);	KUNIT_EXPECT_STREQ(test, (const char *)filtered[0]->name, "suite2");	KUNIT_EXPECT_FALSE(test, filtered[1]);} static void filter_subsuite_test_glob_test(struct kunit *test){	struct kunit_suite *subsuite[3] = {NULL, NULL, NULL};	struct kunit_suite * const *filtered;	struct kunit_test_filter filter = {		.suite_glob = "suite2",		.test_glob = "test2",	}; 	subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);	subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases); 	/* Want: suite1, suite2, NULL -> suite2 (just test1), NULL */	filtered = kunit_filter_subsuite(subsuite, &filter);	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered);	free_subsuite_at_end(test, filtered); 	/* Validate we just have suite2 */	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered[0]);	KUNIT_EXPECT_STREQ(test, (const char *)filtered[0]->name, "suite2");	KUNIT_EXPECT_FALSE(test, filtered[1]); 	/* Now validate we just have test2 */	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered[0]->test_cases);	KUNIT_EXPECT_STREQ(test, (const char *)filtered[0]->test_cases[0].name, "test2");	KUNIT_EXPECT_FALSE(test, filtered[0]->test_cases[1].name);} static void filter_subsuite_to_empty_test(struct kunit *test){	struct kunit_suite *subsuite[3] = {NULL, NULL, NULL};	struct kunit_suite * const *filtered;	struct kunit_test_filter filter = {		.suite_glob = "not_found",		.test_glob = NULL,	}; 	subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);	subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases); 	filtered = kunit_filter_subsuite(subsuite, &filter);	free_subsuite_at_end(test, filtered); /* just in case */ 	KUNIT_EXPECT_FALSE_MSG(test, filtered,			       "should be NULL to indicate no match");} static void kfree_subsuites_at_end(struct kunit *test, struct suite_set *suite_set){	struct kunit_suite * const * const *suites; 	kfree_at_end(test, suite_set->start);	for (suites = suite_set->start; suites < suite_set->end; suites++)		free_subsuite_at_end(test, *suites);} static void filter_suites_test(struct kunit *test){	/* Suites per-file are stored as a NULL terminated array */	struct kunit_suite *subsuites[2][2] = {		{NULL, NULL},		{NULL, NULL},	};	/* Match the memory layout of suite_set */	struct kunit_suite * const * const suites[2] = {		subsuites[0], subsuites[1],	}; 	const struct suite_set suite_set = {		.start = suites,		.end = suites + 2,	};	struct suite_set filtered = {.start = NULL, .end = NULL};	int err = 0; 	/* Emulate two files, each having one suite */	subsuites[0][0] = alloc_fake_suite(test, "suite0", dummy_test_cases);	subsuites[1][0] = alloc_fake_suite(test, "suite1", dummy_test_cases); 	/* Filter out suite1 */	filtered = kunit_filter_suites(&suite_set, "suite0", &err);	kfree_subsuites_at_end(test, &filtered); /* let us use ASSERTs without leaking */	KUNIT_EXPECT_EQ(test, err, 0);	KUNIT_ASSERT_EQ(test, filtered.end - filtered.start, (ptrdiff_t)1); 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered.start);	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered.start[0]);	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered.start[0][0]);	KUNIT_EXPECT_STREQ(test, (const char *)filtered.start[0][0]->name, "suite0");} static struct kunit_case executor_test_cases[] = {	KUNIT_CASE(parse_filter_test),	KUNIT_CASE(filter_subsuite_test),	KUNIT_CASE(filter_subsuite_test_glob_test),	KUNIT_CASE(filter_subsuite_to_empty_test),	KUNIT_CASE(filter_suites_test),	{}}; static struct kunit_suite executor_test_suite = {	.name = "kunit_executor_test",	.test_cases = executor_test_cases,}; kunit_test_suites(&executor_test_suite); /* Test helpers */ static void kfree_res_free(struct kunit_resource *res){	kfree(res->data);} /* Use the resource API to register a call to kfree(to_free). * Since we never actually use the resource, it's safe to use on const data. */static void kfree_at_end(struct kunit *test, const void *to_free){	/* kfree() handles NULL already, but avoid allocating a no-op cleanup. */	if (IS_ERR_OR_NULL(to_free))		return;	kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL,			     (void *)to_free);} static void free_subsuite_res_free(struct kunit_resource *res){	kunit_free_subsuite(res->data);} static void free_subsuite_at_end(struct kunit *test,				 struct kunit_suite *const *to_free){	if (IS_ERR_OR_NULL(to_free))		return;	kunit_alloc_resource(test, NULL, free_subsuite_res_free,			     GFP_KERNEL, (void *)to_free);} static struct kunit_suite *alloc_fake_suite(struct kunit *test,					    const char *suite_name,					    struct kunit_case *test_cases){	struct kunit_suite *suite; 	/* We normally never expect to allocate suites, hence the non-const cast. */	suite = kunit_kzalloc(test, sizeof(*suite), GFP_KERNEL);	strncpy((char *)suite->name, suite_name, sizeof(suite->name) - 1);	suite->test_cases = test_cases; 	return suite;}