Tests: Add tests for memset, memcpy and memchr

tests/libc/Test.c

@@ -1,5 +1,9 @@
 #include "Test.h"
 
+// string.h
+DEFINE_TEST(memset);
+DEFINE_TEST(memcpy);
+DEFINE_TEST(memchr);
 DEFINE_TEST(strlen);
 DEFINE_TEST(strnlen);
 DEFINE_TEST(strcspn);
@@ -8,6 +12,7 @@ DEFINE_TEST(strchr);
 DEFINE_TEST(strrchr);
 DEFINE_TEST(strpbrk);
 
+// stdlib.h
 DEFINE_TEST(atoi);
 DEFINE_TEST(atol);
 DEFINE_TEST(atoll);
@@ -18,6 +23,9 @@ DEFINE_TEST(calloc);
 int main()
 {
     START_TEST_CASE(string.h);
+    RUN_TEST(memset);
+    RUN_TEST(memcpy);
+    RUN_TEST(memchr);
     RUN_TEST(strlen);
     RUN_TEST(strnlen);
     RUN_TEST(strcspn);

tests/libc/string.c

@@ -1,6 +1,72 @@
 #include "Test.h"
 #include <string.h>
 
+DEFINE_TEST(memset)
+{
+    START_TEST(memset);
+
+    char test[10];
+    char* ptr = memset(test, 0, 10);
+
+    EXPECT_EQ(ptr, test);
+
+    for (int i = 0; i < 10; i++) { EXPECT_EQ(test[i], 0); }
+
+    ptr = memset(test, 42, 10);
+
+    EXPECT_EQ(ptr, test);
+
+    for (int i = 0; i < 10; i++) { EXPECT_EQ(test[i], 42); }
+
+    TEST_SUCCESS();
+}
+
+DEFINE_TEST(memcpy)
+{
+    START_TEST(memcpy);
+
+    char buf[20] = "Nothing is going on";
+    const char* str = "Something is going!";
+
+    char* ptr = memcpy(buf, str, 20);
+
+    EXPECT_EQ(ptr, buf);
+
+    for (int i = 0; i < 20; i++) { EXPECT_EQ(buf[i], str[i]); }
+
+    const char* new = "Well...";
+
+    ptr = memcpy(buf, new, 7);
+
+    EXPECT_EQ(ptr, buf);
+
+    for (int i = 0; i < 7; i++) { EXPECT_EQ(buf[i], new[i]); }
+    for (int i = 7; i < 20; i++) { EXPECT_EQ(buf[i], str[i]); }
+
+    TEST_SUCCESS();
+}
+
+DEFINE_TEST(memchr)
+{
+    START_TEST(memchr);
+
+    char buf[20] = "abcdefghijklmnopqrs";
+
+    char* ptr = memchr(buf, 'z', 20);
+
+    EXPECT_EQ(ptr, NULL);
+
+    ptr = memchr(buf, 'd', 20);
+
+    EXPECT_EQ(ptr, buf + 3);
+
+    ptr = memchr(buf, 's', 20);
+
+    EXPECT_EQ(ptr, buf + 18);
+
+    TEST_SUCCESS();
+}
+
 DEFINE_TEST(strlen)
 {
     START_TEST(strlen);