#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <errno.h>

#include "test.h"

/* r = place to store result

 * f = function call to test (or any expression)

 * x = expected result

 * m = message to print on failure (with formats for r & x)

**/

#define TEST(r, f, x, m) ( \

	errno = 0, msg = #f, ((r) = (f)) == (x) || \

	(error("%s failed (" m ")\n", #f, r, x), 0) )

#define TEST2(r, f, x, m) ( \

	((r) = (f)) == (x) || \

	(error("%s failed (" m ")\n", msg, r, x), 0) )

void test_strtol(void) {

	int i;

	long l;

	unsigned long ul;

	char *msg="";

	char *s, *c;

	TEST(l, atol("2147483647"), 2147483647L, "max 32bit signed %ld != %ld");

	TEST(l, strtol("2147483647", 0, 0), 2147483647L, "max 32bit signed %ld != %ld");

	TEST(ul, strtoul("4294967295", 0, 0), 4294967295UL, "max 32bit unsigned %lu != %lu");

	if (sizeof(long) == 4) {

		TEST(l, strtol(s="2147483648", &c, 0), 2147483647L, "uncaught overflow %ld != %ld");

		TEST2(i, c-s, 10, "wrong final position %d != %d");

		TEST2(i, errno, ERANGE, "missing errno %d != %d");

		TEST(l, strtol(s="-2147483649", &c, 0), -2147483647L-1, "uncaught overflow %ld != %ld");

		TEST2(i, c-s, 11, "wrong final position %d != %d");

		TEST2(i, errno, ERANGE, "missing errno %d != %d");

		TEST(ul, strtoul(s="4294967296", &c, 0), 4294967295UL, "uncaught overflow %lu != %lu");

		TEST2(i, c-s, 10, "wrong final position %d != %d");

		TEST2(i, errno, ERANGE, "missing errno %d != %d");

		TEST(ul, strtoul(s="-1", &c, 0), -1UL, "rejected negative %lu != %lu");

		TEST2(i, c-s, 2, "wrong final position %d != %d");

		TEST2(i, errno, 0, "spurious errno %d != %d");

		TEST(ul, strtoul(s="-2", &c, 0), -2UL, "rejected negative %lu != %lu");

		TEST2(i, c-s, 2, "wrong final position %d != %d");

		TEST2(i, errno, 0, "spurious errno %d != %d");

		TEST(ul, strtoul(s="-2147483648", &c, 0), -2147483648UL, "rejected negative %lu != %lu");

		TEST2(i, c-s, 11, "wrong final position %d != %d");

		TEST2(i, errno, 0, "spurious errno %d != %d");

		TEST(ul, strtoul(s="-2147483649", &c, 0), -2147483649UL, "rejected negative %lu != %lu");

		TEST2(i, c-s, 11, "wrong final position %d != %d");

		TEST2(i, errno, 0, "spurious errno %d != %d");

	} else {

		TEST(i, 0, 1, "64bit tests not implemented");

	}

	TEST(l, strtol("z", 0, 36), 35, "%ld != %ld");

	TEST(l, strtol("00010010001101000101011001111000", 0, 2), 0x12345678, "%ld != %ld");

	TEST(l, strtol(s="0F5F", &c, 16), 0x0f5f, "%ld != %ld");

	TEST(l, strtol(s="0xz", &c, 16), 0, "%ld != %ld");

	TEST2(i, c-s, 1, "wrong final position %ld != %ld");

	TEST(l, strtol(s="0x1234", &c, 16), 0x1234, "%ld != %ld");

	TEST2(i, c-s, 6, "wrong final position %ld != %ld");

	c = NULL;

	TEST(l, strtol(s="123", &c, 37), 0, "%ld != %ld");

	TEST2(i, c-s, 0, "wrong final position %d != %d");

	TEST2(i, errno, EINVAL, "%d != %d");

}