// Modifications copyright (C) 2017, Baidu.com, Inc.
// Copyright 2017 The Apache Software Foundation

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

#include "util/filesystem_util.h"

#include <sys/stat.h>

#include <boost/filesystem.hpp>
#include <gtest/gtest.h>

#include "util/logging.h"

namespace palo {

namespace filesystem = boost::filesystem;
using filesystem::path;

TEST(FilesystemUtil, rlimit) {
    ASSERT_LT(0ul, FileSystemUtil::max_num_file_handles());
}

TEST(FilesystemUtil, CreateDirectory) {
    // Setup a temporary directory with one subdir
    path dir = filesystem::unique_path();
    path subdir1 = dir / "path1";
    path subdir2 = dir / "path2";
    path subdir3 = dir / "a" / "longer" / "path";
    filesystem::create_directories(subdir1);
    // Test error cases by removing write permissions on root dir to prevent
    // creation/deletion of subdirs
    chmod(dir.string().c_str(), 0);
    EXPECT_FALSE(FileSystemUtil::create_directory(subdir1.string()).ok());
    EXPECT_FALSE(FileSystemUtil::create_directory(subdir2.string()).ok());
    // Test success cases by adding write permissions back
    chmod(dir.string().c_str(), S_IRWXU);
    EXPECT_TRUE(FileSystemUtil::create_directory(subdir1.string()).ok());
    EXPECT_TRUE(FileSystemUtil::create_directory(subdir2.string()).ok());
    // Check that directories were created
    EXPECT_TRUE(filesystem::exists(subdir1) && filesystem::is_directory(subdir1));
    EXPECT_TRUE(filesystem::exists(subdir2) && filesystem::is_directory(subdir2));
    // Exercise VerifyIsDirectory
    EXPECT_TRUE(FileSystemUtil::verify_is_directory(subdir1.string()).ok());
    EXPECT_TRUE(FileSystemUtil::verify_is_directory(subdir2.string()).ok());
    EXPECT_FALSE(FileSystemUtil::verify_is_directory(subdir3.string()).ok());
    // Check that nested directories can be created
    EXPECT_TRUE(FileSystemUtil::create_directory(subdir3.string()).ok());
    EXPECT_TRUE(filesystem::exists(subdir3) && filesystem::is_directory(subdir3));
    // Cleanup
    filesystem::remove_all(dir);
}

} // end namespace palo

int main(int argc, char** argv) {
    // std::string conffile = std::string(getenv("PALO_HOME")) + "/conf/be.conf";
    // if (!palo::config::init(conffile.c_str(), false)) {
    //     fprintf(stderr, "error read config file. \n");
    //     return -1;
    // }
    palo::init_glog("be-test");
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}