// Copyright (C) 2010-2018 Joel Rosdahl
//
// 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, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

// This file contains tests for functions in util.c.

#include "../src/ccache.h"
#include "framework.h"

TEST_SUITE(util)

TEST(basename)
{
	CHECK_STR_EQ_FREE2("foo.c", basename("foo.c"));
	CHECK_STR_EQ_FREE2("foo.c", basename("dir1/dir2/foo.c"));
	CHECK_STR_EQ_FREE2("foo.c", basename("/dir/foo.c"));
	CHECK_STR_EQ_FREE2("", basename("dir1/dir2/"));
}

TEST(dirname)
{
	CHECK_STR_EQ_FREE2(".", dirname("foo.c"));
	CHECK_STR_EQ_FREE2(".", dirname(""));
	CHECK_STR_EQ_FREE2("/", dirname("/"));
	CHECK_STR_EQ_FREE2("/", dirname("/foo.c"));
	CHECK_STR_EQ_FREE2("dir1/dir2", dirname("dir1/dir2/foo.c"));
	CHECK_STR_EQ_FREE2("/dir", dirname("/dir/foo.c"));
	CHECK_STR_EQ_FREE2("dir1/dir2", dirname("dir1/dir2/"));
}

TEST(common_dir_prefix_length)
{
	CHECK_INT_EQ(0, common_dir_prefix_length("", ""));
	CHECK_INT_EQ(0, common_dir_prefix_length("/", "/"));
	CHECK_INT_EQ(0, common_dir_prefix_length("/", "/b"));
	CHECK_INT_EQ(0, common_dir_prefix_length("/a", "/b"));
	CHECK_INT_EQ(2, common_dir_prefix_length("/a", "/a"));
	CHECK_INT_EQ(2, common_dir_prefix_length("/a", "/a/b"));
	CHECK_INT_EQ(2, common_dir_prefix_length("/a/b", "/a/c"));
	CHECK_INT_EQ(4, common_dir_prefix_length("/a/b", "/a/b"));
	CHECK_INT_EQ(2, common_dir_prefix_length("/a/bc", "/a/b"));
	CHECK_INT_EQ(2, common_dir_prefix_length("/a/b", "/a/bc"));
}

TEST(get_relative_path)
{
#ifdef _WIN32
	CHECK_STR_EQ_FREE2("a", get_relative_path("C:/doesn't matter", "a"));
	CHECK_STR_EQ_FREE2("a/b", get_relative_path("C:/doesn't matter", "a/b"));
	CHECK_STR_EQ_FREE2(".", get_relative_path("C:/a", "C:/a"));
	CHECK_STR_EQ_FREE2("..", get_relative_path("C:/a/b", "C:/a"));
	CHECK_STR_EQ_FREE2("b", get_relative_path("C:/a", "C:/a/b"));
	CHECK_STR_EQ_FREE2("b/c", get_relative_path("C:/a", "C:/a/b/c"));
	CHECK_STR_EQ_FREE2("../c", get_relative_path("C:/a/b", "C:/a/c"));
	CHECK_STR_EQ_FREE2("../c/d", get_relative_path("C:/a/b", "C:/a/c/d"));
	CHECK_STR_EQ_FREE2("../../c/d", get_relative_path("C:/a/b/c", "C:/a/c/d"));
	CHECK_STR_EQ_FREE2("../..", get_relative_path("C:/a/b", "C:/"));
	CHECK_STR_EQ_FREE2("../../c", get_relative_path("C:/a/b", "C:/c"));
	CHECK_STR_EQ_FREE2("a/b", get_relative_path("C:/", "C:/a/b"));
#else
	CHECK_STR_EQ_FREE2("a", get_relative_path("/doesn't matter", "a"));
	CHECK_STR_EQ_FREE2("a/b", get_relative_path("/doesn't matter", "a/b"));
	CHECK_STR_EQ_FREE2(".", get_relative_path("/a", "/a"));
	CHECK_STR_EQ_FREE2("..", get_relative_path("/a/b", "/a"));
	CHECK_STR_EQ_FREE2("b", get_relative_path("/a", "/a/b"));
	CHECK_STR_EQ_FREE2("b/c", get_relative_path("/a", "/a/b/c"));
	CHECK_STR_EQ_FREE2("../c", get_relative_path("/a/b", "/a/c"));
	CHECK_STR_EQ_FREE2("../c/d", get_relative_path("/a/b", "/a/c/d"));
	CHECK_STR_EQ_FREE2("../../c/d", get_relative_path("/a/b/c", "/a/c/d"));
	CHECK_STR_EQ_FREE2("../..", get_relative_path("/a/b", "/"));
	CHECK_STR_EQ_FREE2("../../c", get_relative_path("/a/b", "/c"));
	CHECK_STR_EQ_FREE2("a/b", get_relative_path("/", "/a/b"));
#endif
}

TEST(format_hash_as_string)
{
	unsigned char hash[16] = {
		"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
	};

	CHECK_STR_EQ_FREE2("00000000000000000000000000000000",
	                   format_hash_as_string(hash, -1));
	CHECK_STR_EQ_FREE2("00000000000000000000000000000000-0",
	                   format_hash_as_string(hash, 0));
	hash[0] = 17;
	hash[15] = 42;
	CHECK_STR_EQ_FREE2("1100000000000000000000000000002a-12345",
	                   format_hash_as_string(hash, 12345));
}

TEST(subst_env_in_string)
{
	char *errmsg;

	putenv("FOO=bar");

	CHECK_STR_EQ_FREE2("bar",
	                   subst_env_in_string("$FOO", &errmsg));
	CHECK(!errmsg);

	errmsg = "";
	CHECK_STR_EQ_FREE2("$",
	                   subst_env_in_string("$", &errmsg));
	CHECK(!errmsg);

	errmsg = "";
	CHECK_STR_EQ_FREE2("bar bar:bar",
	                   subst_env_in_string("$FOO $FOO:$FOO", &errmsg));
	CHECK(!errmsg);

	errmsg = "";
	CHECK_STR_EQ_FREE2("xbar",
	                   subst_env_in_string("x$FOO", &errmsg));
	CHECK(!errmsg);

	errmsg = "";
	CHECK_STR_EQ_FREE2("barx",
	                   subst_env_in_string("${FOO}x", &errmsg));
	CHECK(!errmsg);

	CHECK(!subst_env_in_string("$surelydoesntexist", &errmsg));
	CHECK_STR_EQ_FREE2("environment variable \"surelydoesntexist\" not set",
	                   errmsg);

	CHECK(!subst_env_in_string("${FOO", &errmsg));
	CHECK_STR_EQ_FREE2("syntax error: missing '}' after \"FOO\"", errmsg);
}

TEST(format_human_readable_size)
{
	CHECK_STR_EQ_FREE2("0.0 kB", format_human_readable_size(0));
	CHECK_STR_EQ_FREE2("0.0 kB", format_human_readable_size(49));
	CHECK_STR_EQ_FREE2("0.1 kB", format_human_readable_size(50));
	CHECK_STR_EQ_FREE2("42.0 kB", format_human_readable_size(42 * 1000));
	CHECK_STR_EQ_FREE2("1.0 MB", format_human_readable_size(1000 * 1000));
	CHECK_STR_EQ_FREE2("1.2 MB", format_human_readable_size(1234 * 1000));
	CHECK_STR_EQ_FREE2("438.5 MB",
	                   format_human_readable_size(438.5 * 1000 * 1000));
	CHECK_STR_EQ_FREE2("1.0 GB",
	                   format_human_readable_size(1000 * 1000 * 1000));
	CHECK_STR_EQ_FREE2("17.1 GB",
	                   format_human_readable_size(17.11 * 1000 * 1000 * 1000));
}

TEST(format_parsable_size_with_suffix)
{
	CHECK_STR_EQ_FREE2("0", format_parsable_size_with_suffix(0));
	CHECK_STR_EQ_FREE2("42.0k", format_parsable_size_with_suffix(42 * 1000));
	CHECK_STR_EQ_FREE2("1.0M", format_parsable_size_with_suffix(1000 * 1000));
	CHECK_STR_EQ_FREE2("1.2M", format_parsable_size_with_suffix(1234 * 1000));
	CHECK_STR_EQ_FREE2("438.5M",
	                   format_parsable_size_with_suffix(438.5 * 1000 * 1000));
	CHECK_STR_EQ_FREE2("1.0G",
	                   format_parsable_size_with_suffix(1000 * 1000 * 1000));
	CHECK_STR_EQ_FREE2(
		"17.1G",
		format_parsable_size_with_suffix(17.11 * 1000 * 1000 * 1000));
}

TEST(parse_size_with_suffix)
{
	uint64_t size;
	size_t i;
	struct { const char *size; int64_t expected; } sizes[] = {
		{"0", 0},
		{"42", (int64_t)42 * 1000 * 1000 * 1000}, // Default suffix: G

		{"78k",       78 * 1000},
		{"78K",       78 * 1000},
		{"1.1 M",     1.1 * 1000 * 1000},
		{"438.55M",   438.55 * 1000 * 1000},
		{"1 G",       1 * 1000 * 1000 * 1000},
		{"2T",        (int64_t)2 * 1000 * 1000 * 1000 * 1000},

		{"78 Ki",     78 * 1024},
		{"1.1Mi",     1.1 * 1024 * 1024},
		{"438.55 Mi", 438.55 * 1024 * 1024},
		{"1Gi",       1 * 1024 * 1024 * 1024},
		{"2 Ti",      (int64_t)2 * 1024 * 1024 * 1024 * 1024},

	};

	for (i = 0; i < ARRAY_SIZE(sizes); ++i) {
		CHECKM(parse_size_with_suffix(sizes[i].size, &size), sizes[i].size);
		CHECK_INT_EQ(sizes[i].expected, size);
	}
}

TEST(format_command)
{
	char *argv[] = {"foo", "bar", NULL};

	CHECK_STR_EQ_FREE2("foo bar\n", format_command(argv));

}

TEST_SUITE_END