feat: add tests

test/string/str1.c

@@ -0,0 +1,37 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../string/mystring.h"
+
+void test_str1(void) {
+	size_t length;
+	size_t capacity;
+	char *c_str;
+
+	/* Allocate a new dynamic string with an initial capacity */
+	mcl_string_s *str = mcl_string_new("Hello, world!", 512);
+	assert(str != NULL);
+
+	/* Retrieve a C str from string with mcl_string_cstr() */
+	c_str = mcl_string_cstr(str);
+	length = mcl_string_length(str);
+	capacity = mcl_string_capacity(str);
+	assert(strcmp(c_str, "Hello, world!") == 0);
+	assert(length == 13);
+	assert(capacity == 512);
+
+	/* Append text to a mcl_string */
+	assert(mcl_string_append(str, " How are you?") == 0);
+
+	c_str = mcl_string_cstr(str);
+	length = mcl_string_length(str);
+	capacity = mcl_string_capacity(str);
+	assert(strcmp(c_str, "Hello, world! How are you?") == 0);
+	assert(length == 26);
+	assert(capacity == 512);
+
+	/* Always deallocate memory */
+	mcl_string_free(str);
+}