add tests

Makefile

@@ -44,7 +44,7 @@ all: libft_malloc.so
 
 exec: $(OBJS_DIR) $(NAME) $(LFT)
 #	$(CC) -o a.out $(FLAGS) main.c $(NAME) $(LFT) 
-	$(CC) -o a.out $(FLAGS) main.c -L. -lft_malloc $(LFT) -Wl,-rpath=.
+	$(CC) -o a.out $(FLAGS) tests.c -L. -lft_malloc $(LFT) -Wl,-rpath=.
 
 libft_malloc.so: $(NAME)
 	ln -sf "$(NAME)" libft_malloc.so

tests.c

@@ -0,0 +1,92 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   tests.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tomoron <tomoron@student.42angouleme.fr>   +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/03/20 17:58:16 by tomoron           #+#    #+#             */
+/*   Updated: 2025/03/20 17:58:17 by tomoron          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdio.h>
+#include <string.h>
+#include "srcs/includes/malloc.h"
+
+void malloc_free_test()
+{
+	void *ptr[3];
+
+	printf("MALLOC TEST (pointers shouldn't be null):\n");
+	ptr[0] = malloc(42);
+	printf("tiny malloc : %p\n", ptr);
+	ptr[1] = malloc(1024);
+	printf("small malloc : %p\n", ptr);
+	ptr[2] = malloc(16384 * 1024);
+	printf("large malloc : %p\n", ptr);
+
+	printf("\n\n\nFREE TEST (1024 bloc is from printf):\n");
+	printf("before : \n");
+	show_alloc_mem();
+	printf("\n");
+	free(ptr[0]);
+	free(ptr[1]);
+	free(ptr[2]);
+	printf("after : \n");
+	show_alloc_mem();
+}
+
+
+void realloc_test()
+{	
+	void *ptr[3];
+
+	printf("\n\n\nREALLOC TEST :\n");
+	printf("test 1 : the data in the first print should be the same in the second print and the size should be 20 in the show alloc\n");
+	ptr[0] = malloc(10);
+	strcpy(ptr[0], "potato");
+	printf("before realloc : %s\nptr : %p\n", (char *)ptr[0], ptr[0]);
+
+	ptr[0] = realloc(ptr[0], 20);
+	printf("after realloc :%s\nptr : %p\n", (char *)ptr[0], ptr[0]);
+	show_alloc_mem();
+
+	printf("test 2 : changing chunk size (form 20 to 500), the pointer used is the same as test1\n");
+	ptr[0] = realloc(ptr[0], 500);
+	printf("after realloc :%s\nptr : %p\n", (char *)ptr[0], ptr[0]);
+	show_alloc_mem();
+
+	printf("test 3 : changing chunk size (form 500 to 8192), the pointer used is the same as test2\n");
+	ptr[0] = realloc(ptr[0], 8192);
+	printf("after realloc :%s\nptr : %p\n", (char *)ptr[0], ptr[0]);
+	show_alloc_mem();
+	free(ptr[0]);
+}
+
+void show_alloc_ex_test()
+{
+	char *data;
+
+	data = malloc(1020);
+	memset(data, 0, 1020);
+	strcpy(data, "0123456789abcdef");
+	strcpy(data + 16, "potato");
+	data[584] = 'a';
+	show_alloc_mem_ex();
+}
+
+int main(void)
+{
+	malloc_free_test();
+	realloc_test();
+	show_alloc_ex_test();
+
+	#ifdef LEAK_TEST
+		printf("leak_test set, allocating memory before end of program");		
+		malloc(10);
+		malloc(50);
+		malloc(8000);
+		malloc(1024);
+	#endif
+}