/*
 * Copyright (C) 2015 Canonical Ltd
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 *
 * 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 <http://www.gnu.org/licenses/>.
 *
 */

#include "mount-support.h"
#include "mount-support.c"
#include "mount-support-nvidia.h"
#include "mount-support-nvidia.c"

#include <glib.h>

static void replace_slashes_with_NUL(char *path, size_t len)
{
	for (size_t i = 0; i < len; i++) {
		if (path[i] == '/')
			path[i] = '\0';
	}
}

static void test_get_nextpath__typical(void)
{
	char path[] = "/some/path";
	size_t offset = 0;
	size_t fulllen = strlen(path);

	// Prepare path for usage with get_nextpath() by replacing
	// all path separators with the NUL byte.
	replace_slashes_with_NUL(path, fulllen);

	// Run get_nextpath a few times to see what happens.
	char *result;
	result = get_nextpath(path, &offset, fulllen);
	g_assert_cmpstr(result, ==, "some");
	result = get_nextpath(path, &offset, fulllen);
	g_assert_cmpstr(result, ==, "path");
	result = get_nextpath(path, &offset, fulllen);
	g_assert_cmpstr(result, ==, NULL);
}

static void test_get_nextpath__weird(void)
{
	char path[] = "..///path";
	size_t offset = 0;
	size_t fulllen = strlen(path);

	// Prepare path for usage with get_nextpath() by replacing
	// all path separators with the NUL byte.
	replace_slashes_with_NUL(path, fulllen);

	// Run get_nextpath a few times to see what happens.
	char *result;
	result = get_nextpath(path, &offset, fulllen);
	g_assert_cmpstr(result, ==, "path");
	result = get_nextpath(path, &offset, fulllen);
	g_assert_cmpstr(result, ==, NULL);
}

static void test_is_subdir(void)
{
	// Sensible exaples are sensible
	g_assert_true(is_subdir("/dir/subdir", "/dir/"));
	g_assert_true(is_subdir("/dir/subdir", "/dir"));
	g_assert_true(is_subdir("/dir/", "/dir"));
	g_assert_true(is_subdir("/dir", "/dir"));
	// Also without leading slash
	g_assert_true(is_subdir("dir/subdir", "dir/"));
	g_assert_true(is_subdir("dir/subdir", "dir"));
	g_assert_true(is_subdir("dir/", "dir"));
	g_assert_true(is_subdir("dir", "dir"));
	// Some more ideas
	g_assert_true(is_subdir("//", "/"));
	g_assert_true(is_subdir("/", "/"));
	g_assert_true(is_subdir("", ""));
	// but this is not true
	g_assert_false(is_subdir("/", "/dir"));
	g_assert_false(is_subdir("/rid", "/dir"));
	g_assert_false(is_subdir("/different/dir", "/dir"));
	g_assert_false(is_subdir("/", ""));
}

static void __attribute__((constructor)) init(void)
{
	g_test_add_func("/mount/get_nextpath/typical",
			test_get_nextpath__typical);
	g_test_add_func("/mount/get_nextpath/weird", test_get_nextpath__weird);
	g_test_add_func("/mount/is_subdir", test_is_subdir);
}
