ft_strnstr()

ft_strnstr_test.c

@@ -0,0 +1,131 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strnstr_test.c                                  :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lalgarra <lalgarra@student.42madrid.com>   +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/10/06 20:46:15 by lalgarra          #+#    #+#             */
+/*   Updated: 2025/10/07 18:00:51 by lalgarra         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+
+#include "libft.h"
+#include <stdio.h>
+#include <string.h>
+
+static void	test(char *prefix, char big[], char litl[], size_t len)
+{
+	char	*res;
+	int		fd;
+
+	fd = STDOUT_FILENO;
+	ft_putstr_fd(prefix, fd);
+	ft_putstr_fd("len:[", fd);
+	ft_putnbr_fd((int) len, fd);
+	ft_putstr_fd("], big:[", fd);
+	ft_putstr_fd(big, fd);
+	ft_putstr_fd("], litl:[", fd);
+	ft_putstr_fd(litl, fd);
+	res = ft_strnstr(big, litl, len);
+	ft_putstr_fd("], result:[", fd);
+	if (res == NULL)
+		ft_putstr_fd("-NULL-", fd);
+	else
+		ft_putstr_fd(res, fd);
+	ft_putendl_fd("]", fd);
+}
+
+static void	zero(char big[], char littl[])
+{
+	bzero(big, 128);
+	bzero(littl, 128);
+}
+
+static void	do_test1(char *prefix, char big[], char littl[])
+{
+	size_t	size;
+
+	size = 40;
+	zero(big, littl);
+	memcpy(big, "Lorem ipsum dolor sit amet consectetur adipiscing elit.", 56);
+	memcpy(littl, "ipsum dolor", 11);
+	test(prefix, big, littl, size);
+}
+
+static void	do_test2(char *prefix, char big[], char littl[])
+{
+	size_t	size;
+
+	zero(big, littl);
+	size = 15;
+	memcpy(big, "Lorem ipsum", 11);
+	memcpy(littl, "z", 1);
+	test(prefix, big, littl, size);
+}
+
+static void	do_test3(char *prefix, char big[], char littl[])
+{
+	size_t	size;
+
+	zero(big, littl);
+	size = 5;
+	test(prefix, big, littl, size);
+}
+
+static void	do_test4(char *prefix, char big[], char littl[])
+{
+	size_t	size;
+
+	zero(big, littl);
+	size = 0;
+	memcpy(littl, "Lorem ipsum dolor sit amet consectetur adipiscing elit.",
+		8);
+	test(prefix, big, littl, size);
+}
+
+static void	do_test5(char *prefix, char big[], char littl[])
+{
+	size_t	size;
+
+	zero(big, littl);
+	size = 4;
+	memcpy(littl, "\xff\xaa\xde\x12", 5);
+	memcpy(big, "\xff\xaa\xde\x12XABC", 5);
+	test(prefix, big, littl, size);
+}
+
+static void	do_test6(char *prefix, char big[], char littl[])
+{
+	size_t	size;
+
+	zero(big, littl);
+	size = 20;
+	memcpy(littl, "e\x00g", 3);
+	memcpy(big, "is there\x00 a nyacat ?",20);
+	test(prefix, big, littl, size);
+}
+
+static void	do_test7(char *prefix)
+{
+	size_t	size;
+
+	size = 3;
+	test(prefix, "abcdefgh", "abc", size);
+}
+
+int	main(void)
+{
+	char	big[128];
+	char	littl[128];
+
+	do_test1("test 1: ", big, littl);
+	do_test2("test 2: ", big, littl);
+	do_test3("test 3: ", big, littl);
+	do_test4("test 4: ", big, littl);
+	do_test5("test 5: ", big, littl);
+	do_test6("test 6: ", big, littl);
+	do_test7("test 7: ");
+	return (0);
+}