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unittests: add test for string_writer

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This commit is contained in:
Benjamin Valentin 2024-08-29 11:34:30 +02:00
parent 309ff95f34
commit 2bf4c715d8
1 changed files with 36 additions and 0 deletions
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36
tests/unittests/tests-libc/tests-libc.c
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@ -30,6 +30,41 @@ static void test_libc_strscpy(void)
TEST_ASSERT_EQUAL_INT(strscpy(buffer, "empty", 0), -E2BIG);
}
static void test_libc_swprintf(void)
{
string_writer_t sw;
char buffer[32];
int res;
string_writer_init(&sw, buffer, sizeof(buffer));
/* check that string can be written completely */
res = swprintf(&sw, "Hello World!");
TEST_ASSERT_EQUAL_INT(res, 12);
TEST_ASSERT_EQUAL_INT(string_writer_len(&sw), 12);
TEST_ASSERT_EQUAL_INT(strcmp("Hello World!", string_writer_str(&sw)), 0);
/* check that we can add to the string */
/* Writing 10 characters, returns 10 bytes written */
res = swprintf(&sw, "0123456789");
TEST_ASSERT_EQUAL_INT(res, 10);
TEST_ASSERT_EQUAL_INT(strcmp("Hello World!0123456789", string_writer_str(&sw)), 0);
/* The string does not fit completely into the buffer, so it gets truncated */
res = swprintf(&sw, "01234567891");
TEST_ASSERT_EQUAL_INT(res, -E2BIG);
TEST_ASSERT_EQUAL_INT(strcmp("Hello World!0123456789012345678", string_writer_str(&sw)), 0);
/* You can't write to a full buffer */
res = swprintf(&sw, "###");
TEST_ASSERT_EQUAL_INT(res, -E2BIG);
/* check if string was truncated as expected */
TEST_ASSERT_EQUAL_INT(string_writer_len(&sw), 32);
TEST_ASSERT_EQUAL_INT(strcmp("Hello World!0123456789012345678",
string_writer_str(&sw)), 0);
}
static void test_libc_memchk(void)
{
char buffer[32];
@ -101,6 +136,7 @@ Test *tests_libc_tests(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
new_TestFixture(test_libc_strscpy),
new_TestFixture(test_libc_swprintf),
new_TestFixture(test_libc_memchk),
new_TestFixture(test_libc_endian),
};