/*
 * Copyright © 2012, 2020, 2022-2024 Nick Bowler
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef CDECL_TEST_H_
#define CDECL_TEST_H_

#include <stddef.h>
#include <stdbool.h>
#include <limits.h>
#include <assert.h>

#ifndef _
#  define _(x) (x)
#endif

#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))

/*
 * The test_uintmax typedef is interchangeable with cdecl_uintmax defined in
 * <cdecl.h>, but we may want to avoid including that header for some tests.
 */
#if HAVE_UNSIGNED_LONG_LONG_INT
typedef unsigned long long test_uintmax;
#elif HAVE_UNSIGNED___INT64
typedef unsigned __int64 test_uintmax;
#else
typedef unsigned long test_uintmax;
#endif

struct cdecl_declspec;
struct option;
struct cdecl;

struct test_rng;

void print_error(const char *fmt, ...);

void *malloc_nofail(size_t size);
void *realloc_nofail(void *ptr, size_t size);

int test_getline(char **linebuf, size_t *n);

bool test_strtoumax(test_uintmax *out, const char *s, test_uintmax limit);

static inline bool test_strtoul(unsigned long *val, const char *str)
{
	test_uintmax v;
	bool rc;

	rc = test_strtoumax(&v, str, (unsigned long)-1);
	*val = v;
	return rc;
}

void test_print_options(const struct option *lopts);

/*
 * Allocate a new random number generator with the given seed string (which
 * should normally be a command-line argument).  The string is parsed as an
 * integer value as if by strtoull with a base of 0.
 */
struct test_rng *test_rng_alloc(const char *seed);

/*
 * Free the random number generator rng.
 */
void test_rng_free(struct test_rng *rng);

/*
 * Return a random integer uniformly on the closed interval [0, limit-1]
 */
unsigned test_rng_uniform_int(struct test_rng *rng, unsigned limit);

/*
 * Return false or true with 50% probablility either way.
 */
static inline int test_rng_50_50(struct test_rng *rng)
{
	return test_rng_uniform_int(rng, 2) == 0;
}

#define VERSION_NO_COPYRIGHT_SYMBOL 1
#include "version.h"

#ifdef PROGNAME
const char *progname = PROGNAME;
#endif

#define test_print_version(s) \
	do_print_version(s " (" PACKAGE_NAME ") " PACKAGE_VERSION)

#endif