#include <c++utilities/conversion/stringconversion.h>
#include <c++utilities/io/catchiofailure.h>
#include <c++utilities/tests/testutils.h>

#include <tagparser/mediafileinfo.h>

#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/TestFixture.h>

#include <iostream>
#include <fstream>

using namespace std;
using namespace TestUtilities;
using namespace TestUtilities::Literals;
using namespace ConversionUtilities;
using namespace Media;

using namespace CPPUNIT_NS;

enum class TagStatus
{
    Original,
    TestMetaDataPresent,
    Removed
};

/*!
 * \brief The CliTests class tests the command line interface.
 */
class CliTests : public TestFixture
{
    CPPUNIT_TEST_SUITE(CliTests);
#ifdef PLATFORM_UNIX
    CPPUNIT_TEST(testBasicReadingAndWriting);
    CPPUNIT_TEST(testSpecifyingNativeFieldIds);
    CPPUNIT_TEST(testHandlingOfTargets);
    CPPUNIT_TEST(testId3SpecificOptions);
    CPPUNIT_TEST(testEncodingOption);
    CPPUNIT_TEST(testMultipleFiles);
    CPPUNIT_TEST(testOutputFile);
    CPPUNIT_TEST(testMultipleValuesPerField);
    CPPUNIT_TEST(testHandlingAttachments);
    CPPUNIT_TEST(testDisplayingInfo);
    CPPUNIT_TEST(testExtraction);
    CPPUNIT_TEST(testReadingAndWritingDocumentTitle);
    CPPUNIT_TEST(testFileLayoutOptions);
#endif
    CPPUNIT_TEST_SUITE_END();

public:
    void setUp();
    void tearDown();

#ifdef PLATFORM_UNIX
    void testBasicReadingAndWriting();
    void testSpecifyingNativeFieldIds();
    void testHandlingOfTargets();
    void testId3SpecificOptions();
    void testEncodingOption();
    void testMultipleFiles();
    void testOutputFile();
    void testMultipleValuesPerField();
    void testHandlingAttachments();
    void testDisplayingInfo();
    void testExtraction();
    void testReadingAndWritingDocumentTitle();
    void testFileLayoutOptions();
#endif

private:

};

CPPUNIT_TEST_SUITE_REGISTRATION(CliTests);

void CliTests::setUp()
{}

void CliTests::tearDown()
{}

#ifdef PLATFORM_UNIX
template <typename StringType, bool negateErrorCond = false>
bool testContainsSubstrings(const StringType &str, std::initializer_list<const typename StringType::value_type *> substrings)
{
    bool res = containsSubstrings(str, substrings);
    if(negateErrorCond) {
        res = !res;
    }
    if(!res) {
        if(!negateErrorCond) {
            cout << "  - test failed: output does NOT contain required substrings\n";
        } else {
            cout << "  - test failed: output DOES contain substrings it shouldn't\n";
        }
        cout << "Output:\n" << str;
        cout << "Substrings:\n";
        for(const auto &substr : substrings) {
            cout << substr << "\n";
        }
    }
    return res;
}

template <typename StringType>
bool testNotContainsSubstrings(const StringType &str, std::initializer_list<const typename StringType::value_type *> substrings)
{
    return testContainsSubstrings<StringType, true>(str, substrings);
}

/*!
 * \brief Tests basic reading and writing of tags.
 */
void CliTests::testBasicReadingAndWriting()
{
    cout << "\nBasic reading and writing" << endl;
    string stdout, stderr;
    // get specific field
    const string mkvFile(workingCopyPath("matroska_wave1/test2.mkv"));
    const string mkvFileBackup(mkvFile + ".bak");
    const char *const args1[] = {"tageditor", "get", "title", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(stderr.empty());
    // context of the following fields is the album (so "Title" means the title of the album)
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "album",
                                          "Title             Elephant Dream - test 2"
                                      }));
    CPPUNIT_ASSERT(stdout.find("Year              2010") == string::npos);

    // get all fields
    const char *const args2[] = {"tageditor", "get", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stderr.empty());
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Title             Elephant Dream - test 2",
                                          "Year              2010",
                                          "Comment           Matroska Validation File 2, 100,000 timecode scale, odd aspect ratio, and CRC-32. Codecs are AVC and AAC"
                                      }));

    // set some fields, keep other field
    const char *const args3[] = {"tageditor", "set", "title=A new title", "genre=Testfile", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args3);
    CPPUNIT_ASSERT(stdout.find("Changes have been applied") != string::npos);
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stderr.empty());
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Title             A new title",
                                          "Genre             Testfile",
                                          "Year              2010",
                                          "Comment           Matroska Validation File 2, 100,000 timecode scale, odd aspect ratio, and CRC-32. Codecs are AVC and AAC"
                                      }));
    // clear backup file
    remove(mkvFileBackup.data());

    // set some fields, discard other
    const char *const args4[] = {"tageditor", "set", "title=Foo", "artist=Bar", "--remove-other-fields", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args4);
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stderr.empty());
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Title             Foo",
                                          "Artist            Bar"
                                      }));
    CPPUNIT_ASSERT(stdout.find("Year") == string::npos);
    CPPUNIT_ASSERT(stdout.find("Comment") == string::npos);
    CPPUNIT_ASSERT(stdout.find("Genre") == string::npos);

    remove(mkvFile.data());
    remove(mkvFileBackup.data());
}

/*!
 * \brief Tests specifying native fields IDs when getting and setting fields.
 */
void CliTests::testSpecifyingNativeFieldIds()
{
    cout << "\nSpecifying native field IDs" << endl;
    string stdout, stderr;

    // get specific field
    const string mkvFile(workingCopyPath("matroska_wave1/test2.mkv"));
    const string mkvFileBackup(mkvFile + ".bak");
    const string mp4File(workingCopyPath("mtx-test-data/aac/he-aacv2-ps.m4a"));
    const string mp4FileBackup(mp4File + ".bak");
    const char *const args1[] = {"tageditor", "set", "mkv:FOO=bar", "mp4:©foo=bar", "mp4:invalid", "-f", mkvFile.data(), mp4File.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(stderr.empty());
    // FIXME: provide a way to specify raw data type
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"making MP4 tag field ©foo: It was not possible to find an appropriate raw data type id. UTF-8 will be assumed."}));
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"Unable to parse denoted field ID \"invalid\": MP4 ID must be exactly 4 chars"}));

    const char *const args2[] = {"tageditor", "get", "mkv:FOO", "mp4:©foo", "generic:year", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stderr.empty());
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"Year              2010"}));
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"FOO               bar"}));

    const char *const args3[] = {"tageditor", "get", "mkv:FOO", "mp4:©foo", "mp4:invalid", "generic:year", "-f", mp4File.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args3);
    CPPUNIT_ASSERT(stderr.empty());
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"test"}));
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"Year              none"}));
    // FIXME: number of whitespaces currently not correct because UTF-8 ©-sign counts as two characters
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"©foo             bar"}));
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"invalid           unable to parse - MP4 ID must be exactly 4 chars"}));

    remove(mkvFile.data()), remove(mkvFileBackup.data());
    remove(mp4File.data()), remove(mp4FileBackup.data());
}

/*!
 * \brief Tests adding and removing of targets.
 */
void CliTests::testHandlingOfTargets()
{
    cout << "\nHandling of targets" << endl;
    string stdout, stderr;
    const string mkvFile(workingCopyPath("matroska_wave1/test2.mkv"));
    const string mkvFileBackup(mkvFile + ".bak");
    const char *const args1[] = {"tageditor", "get", "-f", mkvFile.data(), nullptr};

    // add song title (title field for tag with level 30)
    const char *const args2[] = {"tageditor", "set", "target-level=30", "title=The song title", "genre=The song genre", "target-level=50", "genre=The album genre", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "song",
                                          "Title             The song title",
                                          "Genre             The song genre"
                                      }));
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "album",
                                          "Title             Elephant Dream - test 2",
                                          "Genre             The album genre"
                                      }));
    remove(mkvFileBackup.data());

    // remove tags targeting level 30 and 50 and add new tag targeting level 30 and the audio track
    const char *const args3[] = {"tageditor", "set", "target-level=30", "target-tracks=3134325680", "title=The audio track", "encoder=likely some AAC encoder", "--remove-target", "target-level=30", "--remove-target", "target-level=50", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args3);
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {"song"}));
    CPPUNIT_ASSERT(testNotContainsSubstrings(stdout, {"song", "song"}));
    CPPUNIT_ASSERT(stdout.find("album") == string::npos);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "3134325680",
                                          "Title             The audio track",
                                          "Encoder           likely some AAC encoder"
                                      }));
    remove(mkvFileBackup.data());
    remove(mkvFile.c_str());
}

/*!
 * \brief Tests ID3v1/D3v2/MP3 specific options.
 */
void CliTests::testId3SpecificOptions()
{
    cout << "\nID3/MP3 specific options" << endl;
    string stdout, stderr;
    const string mp3File1(workingCopyPath("mtx-test-data/mp3/id3-tag-and-xing-header.mp3"));
    const string mp3File1Backup(mp3File1 + ".bak");

    // verify both ID3 tags are detected
    const char *const args1[] = {"tageditor", "get", "-f", mp3File1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(stdout.find("ID3v1 tag\n"
                               " Title             Cohesion\n"
                               " Album             Double Nickels On The Dime\n"
                               " Artist            Minutemen\n"
                               " Genre             Punk Rock\n"
                               " Year              1984\n"
                               " Comment           ExactAudioCopy v0.95b4\n"
                               " Track             4\n"
                               "ID3v2 tag (version 2.3.0)\n"
                               " Title             Cohesion\n"
                               " Album             Double Nickels On The Dime\n"
                               " Artist            Minutemen\n"
                               " Genre             Punk Rock\n"
                               " Year              1984\n"
                               " Comment           ExactAudioCopy v0.95b4\n"
                               " Track             4/43\n"
                               " Duration          00:00:00\n"
                               " Encoder settings  LAME 64bits version 3.99 (http://lame.sf.net)") != string::npos);

    // remove ID3v1 tag, convert ID3v2 tag to version 4
    const char *const args2[] = {"tageditor", "set", "--id3v1-usage", "never", "--id3v2-version", "4", "-f", mp3File1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(stdout.find("ID3v1 tag") == string::npos);
    CPPUNIT_ASSERT(stdout.find("ID3v2 tag (version 2.4.0)\n"
                               " Title             Cohesion\n"
                               " Album             Double Nickels On The Dime\n"
                               " Artist            Minutemen\n"
                               " Genre             Punk Rock\n"
                               " Year              1984\n"
                               " Comment           ExactAudioCopy v0.95b4\n"
                               " Track             4/43\n"
                               " Duration          00:00:00\n"
                               " Encoder settings  LAME 64bits version 3.99 (http://lame.sf.net)") != string::npos);
    remove(mp3File1Backup.data());

    // convert remaining ID3v2 tag to version 2, add an ID3v1 tag again and set a field with unicode char by the way
    const char *const args3[] = {"tageditor", "set", "album=Dóuble Nickels On The Dime", "--id3v1-usage", "always", "--id3v2-version", "2", "--id3-init-on-create", "-f", mp3File1.data(), nullptr};
    CPPUNIT_ASSERT_EQUAL(0, execApp(args3, stdout, stderr));
    CPPUNIT_ASSERT_EQUAL(0, execApp(args1, stdout, stderr));
    CPPUNIT_ASSERT(stdout.find("ID3v1 tag\n"
                               " Title             Cohesion\n"
                               " Album             Dóuble Nickels On The Dime\n"
                               " Artist            Minutemen\n"
                               " Genre             Punk Rock\n"
                               " Year              1984\n"
                               " Comment           ExactAudioCopy v0.95b4\n"
                               " Track             4\n"
                               "ID3v2 tag (version 2.2.0)\n"
                               " Title             Cohesion\n"
                               " Album             Dóuble Nickels On The Dime\n"
                               " Artist            Minutemen\n"
                               " Genre             Punk Rock\n"
                               " Year              1984\n"
                               " Comment           ExactAudioCopy v0.95b4\n"
                               " Track             4/43\n"
                               " Duration          00:00:00\n"
                               " Encoder settings  LAME 64bits version 3.99 (http://lame.sf.net)") != string::npos);
    remove(mp3File1.data());
    remove(mp3File1Backup.data());
}

bool bufferContains(const char *buffer, size_t bufferSize, const char *needle, size_t needleSize)
{
    for(const char *const bufferEnd = buffer + bufferSize, *const needleEnd = needle + needleSize; buffer != bufferEnd; ++buffer) {
        const char *needleIterator = needle;
        for(const char *bufferIterator = buffer; needleIterator != needleEnd && *needleIterator == *bufferIterator; ++needleIterator, ++bufferIterator);
        if(needleIterator >= needleEnd) {
            return true;
        }
    }
    return false;
}

template<size_t headSize>
bool fileHeadContains(const string &fileName, const char *needle, size_t needleSize)
{
    ifstream file;
    file.exceptions(ios_base::failbit | ios_base::badbit);
    file.open(fileName, ios_base::in | ios_base::binary);
    char buffer[headSize];
    file.read(buffer, sizeof(buffer));
    return bufferContains(buffer, sizeof(buffer), needle, needleSize);
}

/*!
 * \brief Tests the option to set the encoding.
 */
void CliTests::testEncodingOption()
{
    cout << "\nEncoding option" << endl;
    string stdout, stderr;
    const string mp3File1(workingCopyPath("mtx-test-data/mp3/id3-tag-and-xing-header.mp3"));
    const string mp3File1Backup(mp3File1 + ".bak");

    // try to use UTF-8 for ID3v2.3: not supported and hence should be ignored, UTF-8 CLI arguments must be converted to UTF-16
    const char *const args1[] = {"tageditor", "set", "album=Täst", "--encoding", "utf8", "--id3v1-usage", "never", "--id3v2-version", "3", "-f", mp3File1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(stdout.find("setting tags: Can't use specified encoding \"utf8\" in ID3v2 tag (version 2.3.0) because the tag format/version doesn't support it.") != string::npos);

    // check whether encoding is UTF-16 and BOM is present
    CPPUNIT_ASSERT(fileHeadContains<1024>(mp3File1, "\x01\xff\xfe\x54\x00\xe4\x00\x73\x00\x74\x00\x00\x00", 13));
    remove(mp3File1Backup.data());

    // try to use UTF-8 for ID3v2.4: UTF-8 should be supported
    const char *const args2[] = {"tageditor", "set", "album=Täst", "--encoding", "utf8", "--id3v1-usage", "never", "--id3v2-version", "4", "-f", mp3File1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stdout.find("Can't use specified encoding") == string::npos);

    // check whether encoding is UTF-8
    CPPUNIT_ASSERT(fileHeadContains<1024>(mp3File1, "\x03\x54\xc3\xa4\x73\x74\x00", 7));

    remove(mp3File1.data());
    remove(mp3File1Backup.data());
}

/*!
 * \brief Tests reading and writing multiple files at once.
 */
void CliTests::testMultipleFiles()
{
    cout << "\nReading and writing multiple files at once" << endl;
    string stdout, stderr;
    const string mkvFile1(workingCopyPath("matroska_wave1/test1.mkv"));
    const string mkvFile2(workingCopyPath("matroska_wave1/test2.mkv"));
    const string mkvFile3(workingCopyPath("matroska_wave1/test3.mkv"));

    // get tags of 3 files at once
    const char *const args1[] = {"tageditor", "get", "-f", mkvFile1.data(), mkvFile2.data(), mkvFile3.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Title             Big Buck Bunny - test 1",
                                          "Title             Elephant Dream - test 2",
                                          "Title             Elephant Dream - test 3"
                                      }));
    // clear backup files
    remove((mkvFile1 + ".bak").c_str()), remove((mkvFile2 + ".bak").c_str()), remove((mkvFile3 + ".bak").c_str());

    // set title and part number of 3 files at once
    const char *const args2[] = {"tageditor", "set", "target-level=30", "title=test1", "title=test2", "title=test3", "part+=1", "target-level=50", "title=MKV testfiles", "totalparts=3", "-f", mkvFile1.data(), mkvFile2.data(), mkvFile3.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Matroska tag targeting \"level 50 'album, opera, concert, movie, episode'\"\n"
                                          " Title             MKV testfiles\n"
                                          " Year              2010\n"
                                          " Comment           Matroska Validation File1, basic MPEG4.2 and MP3 with only SimpleBlock\n"
                                          " Total parts       3\n"
                                          "Matroska tag targeting \"level 30 'track, song, chapter'\"\n"
                                          " Title             test1\n"
                                          " Part              1",
                                          "Matroska tag targeting \"level 50 'album, opera, concert, movie, episode'\"\n"
                                          " Title             MKV testfiles\n"
                                          " Year              2010\n"
                                          " Comment           Matroska Validation File 2, 100,000 timecode scale, odd aspect ratio, and CRC-32. Codecs are AVC and AAC\n"
                                          " Total parts       3\n"
                                          "Matroska tag targeting \"level 30 'track, song, chapter'\"\n"
                                          " Title             test2\n"
                                          " Part              2",
                                          "Matroska tag targeting \"level 50 'album, opera, concert, movie, episode'\"\n"
                                          " Title             MKV testfiles\n"
                                          " Year              2010\n"
                                          " Comment           Matroska Validation File 3, header stripping on the video track and no SimpleBlock\n"
                                          " Total parts       3\n"
                                          "Matroska tag targeting \"level 30 'track, song, chapter'\"\n"
                                          " Title             test3\n"
                                          " Part              3"
                                      }));

    // clear working copies if all tests have been
    remove(mkvFile1.c_str()), remove(mkvFile2.c_str()), remove(mkvFile3.c_str());
    remove((mkvFile1 + ".bak").c_str()), remove((mkvFile2 + ".bak").c_str()), remove((mkvFile3 + ".bak").c_str());
}

/*!
 * \brief Tests reading and writing multiple files at once with output files are specified.
 */
void CliTests::testOutputFile()
{
    cout << "\nReading and writing multiple files at once with output files specified" << endl;
    string stdout, stderr;
    const string mkvFile1(workingCopyPath("matroska_wave1/test1.mkv"));
    const string mkvFile2(workingCopyPath("matroska_wave1/test2.mkv"));

    const char *const args1[] = {"tageditor", "set", "target-level=30", "title=test1", "title=test2","-f", mkvFile1.data(), mkvFile2.data(), "-o", "/tmp/test1.mkv", "/tmp/test2.mkv", nullptr};
    TESTUTILS_ASSERT_EXEC(args1);

    // original files have not been modified
    const char *const args2[] = {"tageditor", "get", "-f", mkvFile1.data(), mkvFile2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stdout.find("Matroska tag targeting") != string::npos);
    CPPUNIT_ASSERT(stdout.find("Title             test1") == string::npos);
    CPPUNIT_ASSERT(stdout.find("Title             test2") == string::npos);

    // specified output files contain new titles
    const char *const args3[] = {"tageditor", "get", "-f", "/tmp/test1.mkv", "/tmp/test2.mkv", nullptr};
    TESTUTILS_ASSERT_EXEC(args3);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Matroska tag targeting \"level 30 'track, song, chapter'\"\n"
                                          " Title             test1\n",
                                          "Matroska tag targeting \"level 30 'track, song, chapter'\"\n"
                                          " Title             test2\n"
                                      }));

    remove(mkvFile1.data()), remove(mkvFile2.data());
    remove("/tmp/test1.mkv"), remove("/tmp/test2.mkv");
}

/*!
 * \brief Tests tagging multiple values per field.
 */
void CliTests::testMultipleValuesPerField()
{
    cout << "\nMultiple values per field" << endl;
    string stdout, stderr;
    const string mkvFile1(workingCopyPath("matroska_wave1/test1.mkv"));
    const string mkvFile2(workingCopyPath("matroska_wave1/test2.mkv"));
    const char *const args1[] = {"tageditor", "set", "artist=test1", "+artist=test2", "+artist=test3", "artist=test4", "-f", mkvFile1.data(), mkvFile2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);

    const char *const args2[] = {"tageditor", "get", "-f", mkvFile1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Artist            test1",
                                          "Artist            test2",
                                          "Artist            test3"
                                      }));
    CPPUNIT_ASSERT(stdout.find("Artist            test4") == string::npos); // should be in mkvFile2

    const char *const args3[] = {"tageditor", "get", "-f", mkvFile2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args3);
    CPPUNIT_ASSERT(stdout.find("Artist            test1") == string::npos);
    CPPUNIT_ASSERT(stdout.find("Artist            test2") == string::npos);
    CPPUNIT_ASSERT(stdout.find("Artist            test3") == string::npos);
    CPPUNIT_ASSERT(stdout.find("Artist            test4") != string::npos);

    remove(mkvFile1.c_str()), remove((mkvFile1 + ".bak").c_str());
    remove(mkvFile2.c_str()), remove((mkvFile2 + ".bak").c_str());
}

/*!
 * \brief Tests handling attachments.
 */
void CliTests::testHandlingAttachments()
{
    cout << "\nAttachments" << endl;
    string stdout, stderr;
    const string mkvFile1(workingCopyPath("matroska_wave1/test1.mkv"));
    const string mkvFile1Backup(mkvFile1 + ".bak");
    const string mkvFile2("path=" + testFilePath("matroska_wave1/test2.mkv"));

    // add attachment
    const char *const args2[] = {"tageditor", "set", "--add-attachment", "name=test2.mkv", "mime=video/x-matroska", "desc=Test attachment", mkvFile2.data(), "-f", mkvFile1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    const char *const args1[] = {"tageditor", "info", "-f", mkvFile1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Attachments:",
                                          "Name                          test2.mkv",
                                          "MIME-type                     video/x-matroska",
                                          "Description                   Test attachment",
                                          "Size                          20.16 MiB (21142764 byte)"
                                      }));
    // clear backup file
    remove(mkvFile1Backup.data());

    // update attachment
    const char *const args3[] = {"tageditor", "set", "--update-attachment", "name=test2.mkv", "desc=Updated test attachment", "-f", mkvFile1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args3);
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "Attachments:",
                                          "Name                          test2.mkv",
                                          "MIME-type                     video/x-matroska",
                                          "Description                   Updated test attachment",
                                          "Size                          20.16 MiB (21142764 byte)"
                                      }));
    // clear backup file
    remove(mkvFile1Backup.data());

    // extract assigned attachment again
    const char *const args4[] = {"tageditor", "extract", "--attachment", "name=test2.mkv", "-f", mkvFile1.data(), "-o", "/tmp/extracted.mkv", nullptr};
    TESTUTILS_ASSERT_EXEC(args4);
    fstream origFile, extFile;
    origFile.exceptions(ios_base::failbit | ios_base::badbit), extFile.exceptions(ios_base::failbit | ios_base::badbit);
    origFile.open(mkvFile2.data() + 5, ios_base::in | ios_base::binary), extFile.open("/tmp/extracted.mkv", ios_base::in | ios_base::binary);
    origFile.seekg(0, ios_base::end), extFile.seekg(0, ios_base::end);
    int64 origFileSize = origFile.tellg(), extFileSize = extFile.tellg();
    CPPUNIT_ASSERT_EQUAL(origFileSize, extFileSize);
    for(origFile.seekg(0), extFile.seekg(0); origFileSize > 0; --origFileSize) {
        CPPUNIT_ASSERT_EQUAL(origFile.get(), extFile.get());
    }
    remove("/tmp/extracted.mkv");

    // remove assigned attachment
    const char *const args5[] = {"tageditor", "set", "--remove-attachment", "name=test2.mkv", "-f", mkvFile1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args5);
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(stdout.find("Attachments:") == string::npos);
    CPPUNIT_ASSERT(stdout.find("Name                          test2.mkv") == string::npos);

    remove(mkvFile1.data());
    remove(mkvFile1Backup.data());
}

/*!
 * \brief Tests displaying general file info.
 */
void CliTests::testDisplayingInfo()
{
    cout << "\nDisplaying general file info" << endl;
    string stdout, stderr;

    // test Matroska file
    const string mkvFile(testFilePath("matroska_wave1/test2.mkv"));
    const char *const args1[] = {"tageditor", "info", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "  Container format: Matroska\n"
                                          "    Document type                 matroska\n"
                                          "    Read version                  1\n"
                                          "    Version                       1\n"
                                          "    Document read version         2\n"
                                          "    Document version              2\n"
                                          "    Duration                      47 s 509 ms\n"
                                          "    Tag position                  before data\n"
                                          "    Index position                before data\n",
                                          "  Tracks:\n"
                                          "    ID                            1863976627\n"
                                          "    Type                          Video\n"
                                          "    Format                        Advanced Video Coding Main Profile\n"
                                          "    Abbreviation                  H.264\n"
                                          "    Raw format ID                 V_MPEG4/ISO/AVC\n"
                                          "    FPS                           24\n",
                                          "    ID                            3134325680\n"
                                          "    Type                          Audio\n"
                                          "    Format                        Advanced Audio Coding Low Complexity Profile\n"
                                          "    Abbreviation                  MPEG-4 AAC-LC\n"
                                          "    Raw format ID                 A_AAC\n"
                                          "    Channel config                2 channels: front-left, front-right\n"
                                          "    Sampling frequency            48000 Hz"}));

    // test MP4 file with AAC track using SBR and PS extensions
    const string mp4File(testFilePath("mtx-test-data/aac/he-aacv2-ps.m4a"));
    const char *const args2[] = {"tageditor", "info", "-f", mp4File.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(testContainsSubstrings(stdout, {
                                          "  Container format: MPEG-4 Part 14\n"
                                          "    Document type                 mp42\n"
                                          "    Duration                      3 min\n"
                                          "    Creation time                 2014-12-10 16:22:41\n"
                                          "    Modification time             2014-12-10 16:22:41\n",
                                          "  Tracks:\n"
                                          "    ID                            1\n"
                                          "    Name                          soun\n"
                                          "    Type                          Audio\n"
                                          "    Format                        Advanced Audio Coding Low Complexity Profile\n"
                                          "    Abbreviation                  MPEG-4 AAC-LC\n"
                                          "    Extensions                    Spectral Band Replication and Parametric Stereo / HE-AAC v2\n"
                                          "    Raw format ID                 mp4a\n"
                                          "    Size                          879.65 KiB (900759 byte)\n"
                                          "    Duration                      3 min 138 ms\n"
                                          "    Channel config                1 channel: front-center\n"
                                          "    Extension channel config      2 channels: front-left, front-right\n"
                                          "    Bitrate                       40 kbit/s\n"
                                          "    Bits per sample               16\n"
                                          "    Sampling frequency            24000 Hz\n"
                                          "    Extension sampling frequency  48000 Hz\n"
                                          "    Sample count                  4222\n"
                                          "    Creation time                 2014-12-10 16:22:41\n"
                                          "    Modification time             2014-12-10 16:22:41"}));
}

/*!
 * \brief Tests extraction of field values (used to extract cover or other binary fields).
 * \remarks Extraction of attachments is already tested in testHandlingAttachments().
 */
void CliTests::testExtraction()
{
    cout << "\nExtraction" << endl;
    string stdout, stderr;
    const string mp4File1(testFilePath("mtx-test-data/alac/othertest-itunes.m4a"));

    // test extraction of cover
    const char *const args1[] = {"tageditor", "extract", "cover", "-f", mp4File1.data(), "-o", "/tmp/extracted.jpeg", nullptr};
    TESTUTILS_ASSERT_EXEC(args1);
    MediaFileInfo extractedInfo("/tmp/extracted.jpeg");
    extractedInfo.open(true);
    extractedInfo.parseContainerFormat();
    CPPUNIT_ASSERT_EQUAL(22771_st, extractedInfo.size());
    CPPUNIT_ASSERT(ContainerFormat::Jpeg == extractedInfo.containerFormat());
    extractedInfo.invalidate();

    // test assignment of cover by the way
    const string mp4File2(workingCopyPath("mtx-test-data/aac/he-aacv2-ps.m4a"));
    const char *const args2[] = {"tageditor", "set", "cover=/tmp/extracted.jpeg", "-f", mp4File2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    const char *const args3[] = {"tageditor", "extract", "cover", "-f", mp4File2.data(), "-o", "/tmp/extracted.jpeg", nullptr};
    remove("/tmp/extracted.jpeg");
    TESTUTILS_ASSERT_EXEC(args3);
    extractedInfo.open(true);
    extractedInfo.parseContainerFormat();
    CPPUNIT_ASSERT_EQUAL(22771_st, extractedInfo.size());
    CPPUNIT_ASSERT(ContainerFormat::Jpeg == extractedInfo.containerFormat());
    remove("/tmp/extracted.jpeg");
    remove(mp4File2.data());
    remove((mp4File2 + ".bak").data());
}

/*!
 * \brief Tests reading and writing the document title.
 */
void CliTests::testReadingAndWritingDocumentTitle()
{
    cout << "\nDocument title" << endl;
    string stdout, stderr;

    const string mkvFile(workingCopyPath("matroska_wave1/test2.mkv"));

    const char *const args1[] = {"tageditor", "set", "--doc-title", "Foo", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);

    const char *const args2[] = {"tageditor", "info", "-f", mkvFile.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stdout.find("Title                         Foo") != string::npos);

    remove(mkvFile.data());
    remove((mkvFile + ".bak").data());
}

/*!
 * \brief Tests options for controlling file layout.
 */
void CliTests::testFileLayoutOptions()
{
    cout << "\nFile layout options" <<  endl;
    string stdout, stderr;

    const string mp4File1(workingCopyPath("mtx-test-data/alac/othertest-itunes.m4a"));
    const char *const args1[] = {"tageditor", "set", "--tag-pos", "back", "--force", "-f", mp4File1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args1);

    const char *const args2[] = {"tageditor", "info", "-f", mp4File1.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args2);
    CPPUNIT_ASSERT(stdout.find("Tag position                  after data") != string::npos);

    remove(mp4File1.data());
    remove((mp4File1 + ".bak").data());

    const string mp4File2(workingCopyPath("mp4/test1.m4a"));
    const char *const args3[] = {"tageditor", "set", "genre=Rock", "--index-pos", "back", "--force", "-f", mp4File2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args3);

    const char *const args4[] = {"tageditor", "info", "-f", mp4File2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args4);
    CPPUNIT_ASSERT(stdout.find("Tag position                  after data") != string::npos);

    const char *const args5[] = {"tageditor", "get", "-f", mp4File2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args5);
    CPPUNIT_ASSERT(stdout.find("MP4/iTunes tag\n"
                               " Title             You Shook Me All Night Long\n"
                               " Album             Who Made Who\n"
                               " Artist            ACDC\n"
                               " Genre             Rock\n"
                               " Year              1986\n"
                               " Track             2/9\n"
                               " Encoder           Nero AAC codec / 1.5.3.0, remuxed with Lavf57.56.100\n"
                               " Encoder settings  ndaudio 1.5.3.0 / -q 0.34") != string::npos);
    remove((mp4File2 + ".bak").data());

    const char *const args6[] = {"tageditor", "set", "--index-pos", "front", "--force", "-f", mp4File2.data(), nullptr};
    TESTUTILS_ASSERT_EXEC(args6);

    TESTUTILS_ASSERT_EXEC(args4);
    CPPUNIT_ASSERT(stdout.find("Tag position                  before data") != string::npos);

    remove(mp4File2.data());
    remove((mp4File2 + ".bak").data());
}
#endif