refactor(test): use builtin meson test

test/hashmap/hm1.c

@@ -48,7 +48,7 @@ void my_free_value(void *value) {
 	free(mct);
 }
 
-void test_hm1(void) {
+int main(void) {
 	/* Allocate a new hashmap */
 	/* Pass your custom hash, equal and free functions */
 	/* This hashmap will contain names as keys and a custom type as value */

test/queue/queue1.c

@@ -1,7 +1,7 @@
 #include "../queue/myqueue.h"
 #include <assert.h>
 
-void test_queue1(void) {
+int main(void) {
 	/* Allocate a new queue */
 	queue_s *queue = queue_new(3, sizeof(int));
 	assert(queue != NULL);

test/set/set1.c

@@ -2,7 +2,7 @@
 
 #include <assert.h>
 
-void test_set1(void) {
+int main(void) {
 	set_s *set = set_new(sizeof(int));
 	assert(set != NULL);
 

test/stack/stack1.c

@@ -2,7 +2,7 @@
 #include <assert.h>
 #include <stdlib.h>
 
-void test_stack1(void) {
+int main(void) {
 	stack_s *stack = stack_new(32, sizeof(int));
 	int num = 10;
 	stack_push(stack, &num);

test/string/str1.c

@@ -4,7 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-void test_str1(void) {
+int main(void) {
 	size_t length;
 	size_t capacity;
 	char *c_str;

test/string/str2.c

@@ -2,7 +2,7 @@
 #include <assert.h>
 #include <string.h>
 
-void test_str2(void) {
+int main(void) {
 	string_s *s1 = string_new("Hello, world!", 0);
 	assert(s1 != NULL);
 	string_s *s2 = string_new("Hello, world!", 0);
@@ -27,6 +27,21 @@ void test_str2(void) {
 	assert(string_len(s1) == 50);
 	assert(string_cap(s1) == 64);
 
+	/* Regression: when need == capacity, extend still needs room for '\0'. */
+	string_s *tight_dst = string_new("abc", 4);
+	string_s *tight_src = string_new("d", 0);
+	assert(tight_dst != NULL);
+	assert(tight_src != NULL);
+	assert(string_extend(tight_dst, tight_src) == 0);
+	assert(strcmp(string_cstr(tight_dst), "abcd") == 0);
+	assert(string_cap(tight_dst) >= 5);
+
+	/* Self-extend should be safe and deterministic. */
+	string_s *self = string_new("xy", 0);
+	assert(self != NULL);
+	assert(string_extend(self, self) == 0);
+	assert(strcmp(string_cstr(self), "xyxy") == 0);
+
 	/* Find substring in string */
 	int pos = string_find(s1, " is ");
 	assert(pos == 11);
@@ -34,4 +49,7 @@ void test_str2(void) {
 	string_free(s1);
 	string_free(s2);
 	string_free(extend_me);
+	string_free(tight_dst);
+	string_free(tight_src);
+	string_free(self);
 }

test/string/str3.c

@@ -2,7 +2,7 @@
 #include <assert.h>
 #include <string.h>
 
-void test_str3(void) {
+int main(void) {
 	/* Make a new string from format */
 	string_s *s = string_format("My name is %s (%d)", "John", 21);
 	assert(strcmp(s->data, "My name is John (21)") == 0);
@@ -16,6 +16,16 @@ void test_str3(void) {
 	/* Test delete */
 	string_remove(ms, 5, 5);
 	assert(strcmp(ms->data, "Hello!") == 0);
+	assert(string_remove(ms, string_len(ms), 1) == -1);
+
+	string_s *remove_mid = string_new("abcdef", 0);
+	assert(remove_mid != NULL);
+	assert(string_remove(remove_mid, 2, 2) == 0);
+	assert(strcmp(remove_mid->data, "abef") == 0);
+	assert(string_remove(remove_mid, 2, 2) == 0);
+	assert(strcmp(remove_mid->data, "ab") == 0);
+	assert(string_remove(remove_mid, 0, 2) == 0);
+	assert(strcmp(remove_mid->data, "") == 0);
 
 	/* Test replace */
 	string_s *replace_me = string_new("My car doesn't bark!", 0);
@@ -25,5 +35,6 @@ void test_str3(void) {
 
 	string_free(ms);
 	string_free(s);
+	string_free(remove_mid);
 	string_free(replace_me);
 }

test/test.c

@@ -1,56 +0,0 @@
-/**
- * Ignore this file
- */
-
-#include <assert.h>
-#include <stdio.h>
-
-void test_hm1(void);
-
-void test_queue1(void);
-
-void test_str1(void);
-void test_str2(void);
-void test_str3(void);
-
-void test_vec1(void);
-
-void test_stack1(void);
-
-void test_set1(void);
-
-int main(void) {
-	puts("==== [Running Hashmap tests] ====");
-	test_hm1();
-	puts("OK!");
-	puts("");
-
-	puts("==== [Running Queue tests] ====");
-	test_queue1();
-	puts("OK!");
-	puts("");
-
-	puts("==== [Running String tests] ====");
-	test_str1();
-	test_str2();
-	test_str3();
-	puts("OK!");
-	puts("");
-
-	puts("==== [Running Vector tests] ====");
-	test_vec1();
-	puts("OK!");
-	puts("");
-
-	puts("==== [Running Stack tests] ====");
-	test_stack1();
-	puts("OK!");
-	puts("");
-
-	puts("==== [Running Set tests] ====");
-	test_set1();
-	puts("OK!");
-	puts("");
-
-	return 0;
-}

test/vector/vec1.c

@@ -30,7 +30,7 @@ int my_cmp(const void *a, const void *b) {
 	return ma->age - mb->age;
 }
 
-void test_vec1(void) {
+int main(void) {
 	/* Allocate a new vector */
 	size_t elem_size = sizeof(my_elem_s);
 	vec_s *v = vec_new(10, elem_size);