Luna/tests/libc/string.c

#include "Test.h"
#include <string.h>

DEFINE_TEST(strlen)
{
    START_TEST(strlen);

    const char* str = "Hello, World!";

    size_t len = strlen(str);

    EXPECT_EQ(len, 13);

    char null[] = {'\0'};

    len = strlen(null);

    EXPECT_EQ(len, 0);

    TEST_SUCCESS();
}

DEFINE_TEST(strnlen)
{
    START_TEST(strnlen);

    const char* str = "What is going on?";

    size_t len = strnlen(str, 20);

    EXPECT_EQ(len, 17);

    len = strnlen(str, 15);

    EXPECT_EQ(len, 15);

    char buf[] = {'H', 'e', 'l', 'l', 'o'};

    len = strnlen(buf, sizeof(buf));

    EXPECT_EQ(len, sizeof(buf));

    TEST_SUCCESS();
}

DEFINE_TEST(strcspn)
{
    START_TEST(strcspn);

    const char* str = "This string has vowels";
    const char* vowels = "aeiou";

    size_t len = strcspn(str, vowels);

    EXPECT_EQ(len, 2);

    str = "WWWWW";
    len = strcspn(str, vowels);

    EXPECT_EQ(len, 5);

    TEST_SUCCESS();
}

DEFINE_TEST(strspn)
{
    START_TEST(strspn);

    const char* str = "This is a test string";
    const char* accept = "This ";

    size_t len = strspn(str, accept);

    EXPECT_EQ(len, 8);

    str = "WWWWW";
    len = strspn(str, accept);

    EXPECT_EQ(len, 0);

    str = "This is hi";
    len = strspn(str, accept);

    EXPECT_EQ(len, 10);

    TEST_SUCCESS();
}

DEFINE_TEST(strchr)
{
    START_TEST(strchr);

    const char* str = "Hello, world!";

    char* ptr = strchr(str, 'l');

    EXPECT_EQ(ptr, str + 2);

    ptr = strchr(str, 'u');

    EXPECT_EQ(ptr, NULL);

    ptr = strchr(str, '!');

    EXPECT_EQ(ptr, str + 12);

    TEST_SUCCESS();
}

DEFINE_TEST(strrchr)
{
    START_TEST(strrchr);

    const char* str = "Hello, world!";

    char* ptr = strrchr(str, 'l');

    EXPECT_EQ(ptr, str + 10);

    ptr = strrchr(str, 'u');

    EXPECT_EQ(ptr, NULL);

    ptr = strrchr(str, '!');

    EXPECT_EQ(ptr, str + 12);

    TEST_SUCCESS();
}