linux-master/lib/strscpy_kunit.c

8 #include <kunit/test.h>
12  * tc() - Run a specific test case.
25 static void tc(struct kunit *test, char *src, int count, int expected,
36 	KUNIT_ASSERT_TRUE_MSG(test, src != NULL,
40 	/* Future proofing test suite, validate args */
44 	KUNIT_ASSERT_LE_MSG(test, count, max_count,
46 	KUNIT_EXPECT_LE_MSG(test, expected, max_expected,
51 	KUNIT_ASSERT_EQ(test, written, expected);
54 		KUNIT_ASSERT_EQ_MSG(test, 0, strncmp(buf, src, count - 1),
56 		KUNIT_ASSERT_EQ_MSG(test, buf[count - 1], '\0',
61 		KUNIT_ASSERT_EQ_MSG(test, buf[i], src[i],
65 		KUNIT_ASSERT_EQ_MSG(test, buf[count - 1], '\0',
70 		KUNIT_ASSERT_EQ_MSG(test, buf[index], '\0',
77 		KUNIT_ASSERT_EQ_MSG(test, buf[index], POISON,
82 static void strscpy_test(struct kunit *test)
91 	 * should not exceed 4.  To test with longer strings increase
95 	/* tc(test, src, count, expected, chars, terminator, pad) */
96 	tc(test, "a", 0, -E2BIG, 0, 0, 0);
97 	tc(test, "",  0, -E2BIG, 0, 0, 0);
99 	tc(test, "a", 1, -E2BIG, 0, 1, 0);
100 	tc(test, "",  1, 0,	 0, 1, 0);
102 	tc(test, "ab", 2, -E2BIG, 1, 1, 0);
103 	tc(test, "a",  2, 1,	  1, 1, 0);
104 	tc(test, "",   2, 0,	  0, 1, 1);
106 	tc(test, "abc", 3, -E2BIG, 2, 1, 0);
107 	tc(test, "ab",  3, 2,	   2, 1, 0);
108 	tc(test, "a",   3, 1,	   1, 1, 1);
109 	tc(test, "",    3, 0,	   0, 1, 2);
111 	tc(test, "abcd", 4, -E2BIG, 3, 1, 0);
112 	tc(test, "abc",  4, 3,	    3, 1, 0);
113 	tc(test, "ab",   4, 2,	    2, 1, 1);
114 	tc(test, "a",    4, 1,	    1, 1, 2);
115 	tc(test, "",     4, 0,	    0, 1, 3);
118 	KUNIT_EXPECT_EQ(test, strscpy(dest, "", ARRAY_SIZE(dest)), 0);
119 	KUNIT_EXPECT_EQ(test, strscpy(dest, "", 3), 0);
120 	KUNIT_EXPECT_EQ(test, strscpy(dest, "", 1), 0);
121 	KUNIT_EXPECT_EQ(test, strscpy(dest, "", 0), -E2BIG);
122 	KUNIT_EXPECT_EQ(test, strscpy(dest, "Fixed", ARRAY_SIZE(dest)), 5);
123 	KUNIT_EXPECT_EQ(test, strscpy(dest, "Fixed", 3), -E2BIG);
124 	KUNIT_EXPECT_EQ(test, strscpy(dest, "Fixed", 1), -E2BIG);
125 	KUNIT_EXPECT_EQ(test, strscpy(dest, "Fixed", 0), -E2BIG);
126 	KUNIT_EXPECT_EQ(test, strscpy(dest, "This is too long", ARRAY_SIZE(dest)), -E2BIG);