/*
** Copyright (C) 2023 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** 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, 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, write to the Free Software Foundation,
** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**
*/

#include "mu-regex.hh"
#include <iostream>

using namespace Mu;

#if BUILD_TESTS
#include "mu-test-utils.hh"

// No need for extensive regex test, we just rely on GRegex.

static void
test_regex_match()
{
	auto rx = Regex::make("a.*b.c");
	assert_valid_result(rx);

	assert_equal(mu_format("{}", *rx), "/a.*b.c/");

	g_assert_true(rx->matches("axxxxxbqc"));
	g_assert_false(rx->matches("axxxxxbqqc"));

	{ // unset matches nothing.
		Regex rx2;
		g_assert_false(rx2.matches(""));
	}
}


static void
test_regex_match2()
{
	Regex rx;
	{
		std::string foo = "h.llo";
		rx = unwrap(Regex::make(foo.c_str()));
	}

	std::string hei = "hei";

	g_assert_true(rx.matches("hallo"));
	g_assert_false(rx.matches(hei));
}


static void
test_regex_replace()
{
	{
		auto rx = Regex::make("f.o");
		assert_valid_result(rx);
		assert_equal(rx->replace("foobar", "cuux").value_or("error"), "cuuxbar");
	}

	{
		auto rx = Regex::make("f.o", G_REGEX_MULTILINE);
		assert_valid_result(rx);
		assert_equal(rx->replace("foobar\nfoobar", "cuux").value_or("error"),
			     "cuuxbar\ncuuxbar");
	}
}


static void
test_regex_fail()
{
	allow_warnings();

	{ // unset rx can't replace / error.
		Regex rx;
		assert_equal(mu_format("{}", rx), "//");
		g_assert_false(!!rx.replace("foo", "bar"));
	}

	{
		auto rx = Regex::make("(");
		g_assert_false(!!rx);

	}

}

int
main(int argc, char* argv[])
{
	mu_test_init(&argc, &argv);

	g_test_add_func("/regex/match", test_regex_match);
	g_test_add_func("/regex/match2", test_regex_match2);
	g_test_add_func("/regex/replace", test_regex_replace);
	g_test_add_func("/regex/fail", test_regex_fail);

	return g_test_run();
}

#endif /*BUILD_TESTS*/