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test: lib: add test of memdup_nul()

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Add a very basic test of the new memdup_nul() helper.

Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Rasmus Villemoes
2026-05-12 15:38:00 -06:00
committed by Tom Rini
parent 4ef201e607
commit 8d209186a1
1 changed files with 34 additions and 0 deletions
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test/lib/string.c
+34
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@@ -223,6 +223,40 @@ static int lib_memdup(struct unit_test_state *uts)
}
LIB_TEST(lib_memdup, 0);
/** lib_memdup_nul() - unit test for memdup_nul() */
static int lib_memdup_nul(struct unit_test_state *uts)
{
char buf[BUFLEN];
size_t len;
char *p, *q;
/* Zero size should return a buffer containing a single nul byte */
p = memdup_nul(NULL, 0);
ut_assertnonnull(p);
ut_assert(p[0] == '\0');
free(p);
p = memdup_nul(buf, 0);
ut_assertnonnull(p);
ut_assert(p[0] == '\0');
free(p);
strcpy(buf, TEST_STR);
len = sizeof(TEST_STR);
p = memdup_nul(buf, len);
ut_asserteq_mem(p, buf, len);
ut_assert(p[len] == '\0');
q = memdup_nul(p, len);
ut_asserteq_mem(q, buf, len);
ut_assert(q[len] == '\0');
free(q);
free(p);
return 0;
}
LIB_TEST(lib_memdup_nul, 0);
/** lib_strnstr() - unit test for strnstr() */
static int lib_strnstr(struct unit_test_state *uts)
{