summaryrefslogtreecommitdiffstats
path: root/lib/kunit/executor_test.c
blob: eac6ff48027383350b1545951eebebb055eec69b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
// 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;
}