TEST_CASE("test recording multiple channels", "[recorder]")

{

    DataRecorder rec;

    TestSource source(3, false);

    // temporary file, remove if exists

    auto fileName = QDir::tempPath() + QString("/" TEST_FILE_NAME);

    if (QFile::exists(fileName)) QFile::remove(fileName);

    // connect source → sink

    source.connectSink(&rec);

    // prepare data

    QStringList channelNames({"Channel 1", "Channel 2", "Channel 3"});

    SamplePack samples(5, 3);

    for (int ci = 0; ci < 3; ci++)

    {

        for (int i = 0; i < 5; i++)

        {

            samples.data(ci)[i] = (ci+1)*(i+1);

        }

    }

    // test

    rec.startRecording(fileName, ",", channelNames);

    source._feed(samples);

    rec.stopRecording();

    // read file contents back

    QFile recordFile(fileName);

    REQUIRE(recordFile.open(QIODevice::ReadOnly | QIODevice::Text));

    // NOTE: mind the extra parantheses, otherwise 'catch' macros fail to compile

    REQUIRE((recordFile.readLine() == "Channel 1,Channel 2,Channel 3\n"));

    REQUIRE((recordFile.readLine() == "1,2,3\n"));

    REQUIRE((recordFile.readLine() == "2,4,6\n"));

    REQUIRE((recordFile.readLine() == "3,6,9\n"));

    REQUIRE((recordFile.readLine() == "4,8,12\n"));

    REQUIRE((recordFile.readLine() == "5,10,15\n"));

    // cleanup

    if (QFile::exists(fileName)) QFile::remove(fileName);

}