Fixing ft_strtol overflow

1 files changed, 129 insertions, 0 deletions

diff --git a/test/src/str/test_ft_strtol.c b/test/src/str/test_ft_strtol.c
new file mode 100644
index 0000000..eacaa82
--- /dev/null
+++ b/test/src/str/test_ft_strtol.c
@@ -0,0 +1,129 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   test_ft_strtol.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: charles <charles.cabergs@gmail.com>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/04/01 19:41:59 by charles           #+#    #+#             */
+/*   Updated: 2020/07/17 16:31:20 by charles          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft_test.h"
+
+TEST_GROUP(ft_strtol);
+
+TEST_SETUP(ft_strtol)
+{}
+
+TEST_TEAR_DOWN(ft_strtol)
+{}
+
+static long expected;
+static long actual;
+static char *expected_rest;
+static char *actual_rest;
+static int	expected_errno;
+static int	actual_errno;
+static char	error_buf[2048];
+
+static char	*rest = NULL;
+
+#define TEST_ASSERT_FT_STRTOL(str, base) do { \
+	errno = 0;                \
+	expected = strtol(str, &rest, base);   \
+	expected_rest = rest;                     \
+	expected_errno = errno;        \
+	errno = 0;                \
+	actual = ft_strtol(str, &rest, base);   \
+	actual_rest = rest;                     \
+	actual_errno = errno;        \
+	if (actual != expected || actual_errno != expected_errno || expected_rest != actual_rest)  \
+	{ \
+		snprintf(error_buf, 2048,                                    \
+				 "with: ("#str", "#base") expected: %ld actual: %ld " \
+				 "rest: expected: \"%s\" actual: \"%s\" "             \
+				 "errno: expected: %d actual: %d",                   \
+				expected, actual, expected_rest, actual_rest, expected_errno, actual_errno); \
+		TEST_FAIL_MESSAGE(error_buf);                    \
+	} \
+} while(0);
+
+TEST(ft_strtol, basic)
+{
+	TEST_ASSERT_FT_STRTOL("", 10);
+	TEST_ASSERT_FT_STRTOL("0", 10);
+	TEST_ASSERT_FT_STRTOL("000000000", 10);
+	TEST_ASSERT_FT_STRTOL("1", 10);
+	TEST_ASSERT_FT_STRTOL("2", 10);
+	TEST_ASSERT_FT_STRTOL("3", 10);
+	TEST_ASSERT_FT_STRTOL("4", 10);
+	TEST_ASSERT_FT_STRTOL("5", 10);
+	TEST_ASSERT_FT_STRTOL("6", 10);
+	TEST_ASSERT_FT_STRTOL("7", 10);
+	TEST_ASSERT_FT_STRTOL("8", 10);
+	TEST_ASSERT_FT_STRTOL("9", 10);
+	TEST_ASSERT_FT_STRTOL("000000000000000000000000000000000000000000000000000000000008", 10);
+
+	TEST_ASSERT_FT_STRTOL("                           9", 10);
+	TEST_ASSERT_FT_STRTOL("    \v  \t\f\t\t\t\n\r\f\r\v9", 10);
+	/* TEST_ASSERT_FT_STRTOL("    \v . \t\f\t\t\t\n\r\f\r\v9", 10); */ // dont really care atm
+	TEST_ASSERT_FT_STRTOL("                           9bonjour", 10);
+	TEST_ASSERT_FT_STRTOL("    \v  \t\f\t\t\t\n\r\f\r\v9   \t\t\v\r\f\r", 10);
+	/* TEST_ASSERT_FT_STRTOL("    \v . \t\f\t\t\t\n\r\f\r\v9      \t bonjour", 10); */
+}
+
+TEST(ft_strtol, limits)
+{
+	TEST_ASSERT_FT_STRTOL("-128", 10);
+	TEST_ASSERT_FT_STRTOL("127", 10);
+	TEST_ASSERT_FT_STRTOL("255", 10);
+	TEST_ASSERT_FT_STRTOL("-128", 10);
+	TEST_ASSERT_FT_STRTOL("127", 10);
+	TEST_ASSERT_FT_STRTOL("-32768", 10);
+	TEST_ASSERT_FT_STRTOL("32767", 10);
+	TEST_ASSERT_FT_STRTOL("65535", 10);
+	TEST_ASSERT_FT_STRTOL("-2147483648", 10);
+	TEST_ASSERT_FT_STRTOL("2147483647", 10);
+	TEST_ASSERT_FT_STRTOL("4294967295", 10);
+	TEST_ASSERT_FT_STRTOL("-9223372036854775808", 10);
+	TEST_ASSERT_FT_STRTOL("9223372036854775807", 10);
+	TEST_ASSERT_FT_STRTOL("18446744073709551615", 10);
+
+	TEST_ASSERT_FT_STRTOL("-129", 10);
+	TEST_ASSERT_FT_STRTOL("126", 10);
+	TEST_ASSERT_FT_STRTOL("254", 10);
+	TEST_ASSERT_FT_STRTOL("-127", 10);
+	TEST_ASSERT_FT_STRTOL("126", 10);
+	TEST_ASSERT_FT_STRTOL("-32767", 10);
+	TEST_ASSERT_FT_STRTOL("32766", 10);
+	TEST_ASSERT_FT_STRTOL("65534", 10);
+	TEST_ASSERT_FT_STRTOL("-2147483647", 10);
+	TEST_ASSERT_FT_STRTOL("2147483646", 10);
+	TEST_ASSERT_FT_STRTOL("4294967294", 10);
+	TEST_ASSERT_FT_STRTOL("-9223372036854775807", 10);
+	TEST_ASSERT_FT_STRTOL("9223372036854775806", 10);
+	TEST_ASSERT_FT_STRTOL("18446744073709551614", 10);
+
+	TEST_ASSERT_FT_STRTOL("-129", 10);
+	TEST_ASSERT_FT_STRTOL("128", 10);
+	TEST_ASSERT_FT_STRTOL("256", 10);
+	TEST_ASSERT_FT_STRTOL("-129", 10);
+	TEST_ASSERT_FT_STRTOL("128", 10);
+	TEST_ASSERT_FT_STRTOL("-32769", 10);
+	TEST_ASSERT_FT_STRTOL("32768", 10);
+	TEST_ASSERT_FT_STRTOL("65536", 10);
+	TEST_ASSERT_FT_STRTOL("-2147483649", 10);
+	TEST_ASSERT_FT_STRTOL("2147483648", 10);
+	TEST_ASSERT_FT_STRTOL("4294967296", 10);
+	TEST_ASSERT_FT_STRTOL("-9223372036854775809", 10);
+	TEST_ASSERT_FT_STRTOL("9223372036854775808", 10);
+	TEST_ASSERT_FT_STRTOL("18446744073709551616", 10);
+
+	TEST_ASSERT_FT_STRTOL("-9223372036854775809", 10);
+	TEST_ASSERT_FT_STRTOL("9223372036854775808", 10);
+	TEST_ASSERT_FT_STRTOL("-9223372036854775808", 10);
+	TEST_ASSERT_FT_STRTOL("18446744073709551615", 10);
+	TEST_ASSERT_FT_STRTOL("18446744073709551616", 10);
+}