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Add tests

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This commit is contained in:
Alex Kotov 2022-12-27 17:35:10 +04:00
parent 4850c3ee4f
commit 05cc3dbd3a
Signed by: kotovalexarian
GPG key ID: 553C0EBBEB5D5F08
2 changed files with 95 additions and 1 deletions
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7
src/string.c
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@ -106,7 +106,12 @@ char *LIBCLAYER(strncat)(char *dest, const char *src, size_t n)
int LIBCLAYER(strncmp)(const char *s1, const char *s2, size_t n)
{
for (; *s1 && n; ++s1, ++s2, --n) if (*s1 != *s2) return *s1 < *s2 ? -1 : 1;
while (n--) {
const char c1 = *s1++;
const char c2 = *s2++;
if (c1 != c2) return c1 < c2 ? -1 : 1;
if (!c1) return 0;
}
return 0;
}

89
tests/string.c
View file

@ -19,6 +19,11 @@ static char aaa[COUNT], bbb[COUNT];
#define strcpy LIBCLAYER(strcpy)
#define strlen LIBCLAYER(strlen)
#define strncat LIBCLAYER(strncat)
#define strncmp LIBCLAYER(strncmp)
#define strncpy LIBCLAYER(strncpy)
#define strnlen LIBCLAYER(strnlen)
void test_main()
{
{ // memcmp
@ -97,4 +102,88 @@ void test_main()
assert(strlen("aa") == 2);
assert(strlen("aaaaaaaaaa") == 10);
}
{ // strncat
memset(aaa, '\x01', COUNT);
aaa[0] = 'f'; aaa[1] = 'o'; aaa[2] = 'o'; aaa[3] = '\0';
strncat(aaa, "bar", 4);
for (const char *e = "foobar", *g = aaa; *e; ++e, ++g) assert(*g == *e);
assert(aaa[6] == '\0');
memset(aaa, '\x01', COUNT);
aaa[0] = 'f'; aaa[1] = 'o'; aaa[2] = 'o'; aaa[3] = '\0';
strncat(aaa, "bar", 3);
for (const char *e = "foobar", *g = aaa; *e; ++e, ++g) assert(*g == *e);
assert(aaa[6] == '\0');
memset(aaa, '\x01', COUNT);
aaa[0] = 'f'; aaa[1] = 'o'; aaa[2] = 'o'; aaa[3] = '\0';
strncat(aaa, "bar", 2);
for (const char *e = "fooba", *g = aaa; *e; ++e, ++g) assert(*g == *e);
assert(aaa[5] == '\0');
memset(aaa, '\x01', COUNT);
aaa[0] = 'f'; aaa[1] = 'o'; aaa[2] = 'o'; aaa[3] = '\0';
strncat(aaa, "bar", 1);
for (const char *e = "foob", *g = aaa; *e; ++e, ++g) assert(*g == *e);
assert(aaa[4] == '\0');
memset(aaa, '\x01', COUNT);
aaa[0] = 'f'; aaa[1] = 'o'; aaa[2] = 'o'; aaa[3] = '\0';
strncat(aaa, "bar", 0);
for (const char *e = "foo", *g = aaa; *e; ++e, ++g) assert(*g == *e);
assert(aaa[3] == '\0');
}
{ // strncmp
assert(strncmp("", "", 0) == 0);
assert(strncmp("", "a", 0) == 0);
assert(strncmp("a", "", 0) == 0);
assert(strncmp("a", "a", 0) == 0);
assert(strncmp("", "a", 1) == -1);
assert(strncmp("a", "", 1) == 1);
assert(strncmp("a", "a", 1) == 0);
assert(strncmp("a", "aa", 1) == 0);
assert(strncmp("aa", "a", 1) == 0);
assert(strncmp("aa", "ab", 1) == 0);
assert(strncmp("ab", "aa", 1) == 0);
assert(strncmp("aa", "aa", 1) == 0);
assert(strncmp("aa", "ba", 1) == -1);
assert(strncmp("ba", "aa", 1) == 1);
assert(strncmp("ab", "ab", 1) == 0);
assert(strncmp("a", "aa", 2) == -1);
assert(strncmp("aa", "a", 2) == 1);
assert(strncmp("aa", "ab", 2) == -1);
assert(strncmp("ab", "aa", 2) == 1);
assert(strncmp("aa", "aa", 2) == 0);
}
{ // strncpy
aaa[6] = 'x';
assert(strncpy(aaa, "foobar", 7) == aaa);
for (const char *e = "foobar", *g = aaa; *e; ++e, ++g) assert(*g == *e);
assert(aaa[6] == '\0');
aaa[6] = 'x';
assert(strncpy(aaa, "foobar", 6) == aaa);
for (const char *e = "foobar", *g = aaa; *e; ++e, ++g) assert(*g == *e);
assert(aaa[6] == 'x');
}
{ // strnlen
assert(strnlen("", 0) == 0);
assert(strnlen("", 1) == 0);
assert(strnlen("", 123) == 0);
assert(strnlen("a", 0) == 0);
assert(strnlen("a", 1) == 1);
assert(strnlen("a", 123) == 1);
assert(strnlen("aa", 0) == 0);
assert(strnlen("aa", 1) == 1);
assert(strnlen("aa", 2) == 2);
assert(strnlen("aa", 123) == 2);
assert(strnlen("aaaaaaaaaa", 0) == 0);
assert(strnlen("aaaaaaaaaa", 9) == 9);
assert(strnlen("aaaaaaaaaa", 10) == 10);
assert(strnlen("aaaaaaaaaa", 123) == 10);
}
}