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test-string-util: test empty_to_null on a char array

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Unfortunately empty_to_null(t) where t is char[] fails. But it
works with &t[0].
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2026-04-16 21:07:43 +02:00
parent 5adccf5034
commit 067aa9b767
1 changed files with 22 additions and 0 deletions
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src/test/test-string-util.c
+22
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@@ -617,6 +617,28 @@ TEST(split_pair) {
ASSERT_STREQ(b, "=");
}
TEST(empty_to_null) {
const char *s = "asdf", *n = NULL, *e = "";
char *t = (char*) "asdf";
const char p[] = "asdf";
char q[] = "asdf";
/* empty_to_null cannot be used with constant strings, e.g.
* empty_to_null("") fails with 'error: cast specifies array type'. */
ASSERT_NULL(empty_to_null(NULL));
ASSERT_NULL(empty_to_null(n));
ASSERT_NULL(empty_to_null(e));
ASSERT_STREQ(empty_to_null(s), "asdf");
ASSERT_NULL(empty_to_null(s + 4));
ASSERT_STREQ(empty_to_null(t), "asdf");
ASSERT_NULL(empty_to_null(t + 4));
ASSERT_STREQ(empty_to_null(&p[0]), "asdf");
ASSERT_NULL(empty_to_null(&p[0] + 4));
ASSERT_STREQ(empty_to_null(&q[0]), "asdf");
ASSERT_NULL(empty_to_null(&q[0] + 4));
}
TEST(first_word) {
assert_se(first_word("Hello", ""));
assert_se(first_word("Hello", "Hello"));