init commit

tests/test_basic.c

@@ -0,0 +1,33 @@
+#include <assert.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(void) {
+  /* memcpy */
+  char src[] = "hello world";
+  char dst[64];
+  memcpy(dst, src, 12);
+  dst[12] = 0;
+  assert(strcmp(dst, "hello world") == 0);
+
+  /* strlen */
+  assert(strlen("") == 0);
+  assert(strlen("abc") == 3);
+
+  /* memset */
+  char buf[10];
+  memset(buf, 0xAB, 10);
+  for (int i = 0; i < 10; i++) assert((unsigned char)buf[i] == 0xAB);
+
+  /* memcmp */
+  assert(memcmp("abc", "abc", 3) == 0);
+  assert(memcmp("abc", "abd", 3) < 0);
+
+  /* strcmp */
+  assert(strcmp("hello", "hello") == 0);
+  assert(strcmp("abc", "def") < 0);
+
+  printf("ALL STRING TESTS PASSED\n");
+  return 0;
+}