describe('SoftUniFy', function () {

    it("Initialize an empty instance", () => {
        const softUniFy = new SoftUniFy('');
        const actual = {};
        expect(softUniFy.allSongs).to.be.deep.equal(actual);
    });
    it("Checking the functionality - 1", () => {
        const softUniFy = new SoftUniFy();
        expect(softUniFy).to.be.have.property("downloadSong");
        expect(softUniFy).to.be.have.property("playSong");
        expect(softUniFy).to.be.have.property("rateArtist");
    });
    it("downloadSong - 1", () => {
        const softUniFy = new SoftUniFy('');
        const expected = softUniFy.downloadSong('Eminem', 'Phenomenal', 'IM PHENOMENAL...');
        expect(expected.allSongs).to.be.deep.equal({
            Eminem: {
                rate: 0,
                votes: 0,
                songs: ['Phenomenal - IM PHENOMENAL...']
            }
        });
    });
    it("downloadSong - 2", () => {
        const softUniFy = new SoftUniFy('');
        const expected1 = softUniFy.downloadSong('Eminem', 'Venom', 'Knock, Knock let the devil in...');
        const expected2 = softUniFy.downloadSong('Eminem', 'Phenomenal', 'IM PHENOMENAL...');
        expect(softUniFy.allSongs).to.be.deep.equal({
            Eminem: {
                rate: 0,
                votes: 0,
                songs: [
                    'Venom - Knock, Knock let the devil in...',
                    'Phenomenal - IM PHENOMENAL...'
                ]
            }
        });
    });
    it("playSong - 1. Should return an error", () => {
        const softUniFy = new SoftUniFy();
        const expected = softUniFy.playSong("something");
        expect(() => expected.to.be.equal("`You have not downloaded a something song yet. Use SoftUniFy's function downloadSong() to change that!"));
    });
    it("playSong - 2. Should play the song", () => {
        const softUniFy = new SoftUniFy();
        const down = softUniFy.downloadSong('Eminem', 'Phenomenal', 'IM PHENOMENAL...');
        const expected = softUniFy.playSong("Phenomenal");
        expect(expected).to.be.deep.equal('Eminem:\nPhenomenal - IM PHENOMENAL...\n');
    });
    it("songList - 1. Should show the songs", () => {
        const softUniFy = new SoftUniFy();
        const down = softUniFy.downloadSong('Eminem', 'Venom', 'Knock, Knock let the devil');
        const expected = down.songsList;
        expect(expected).to.be.equal("Venom - Knock, Knock let the devil");
    });
    it("songList - 2. Should trow error", () => {
        const softUniFy = new SoftUniFy();
        const expected = softUniFy.songsList;
        expect(expected).to.be.equal('Your song list is empty');
    });
    it("rateArtist - 1. Should return error", () => {
        const softUniFy = new SoftUniFy();
        const expected = softUniFy.rateArtist("Monika");
        expect(() => expected.to.be.deep.equal('The Monika is not on your artist list.'));
    });
    it("rateArtist - 2. Should return 0", () => {
        const softUniFy = new SoftUniFy();
        const down = softUniFy.downloadSong('Eminem', 'Venom', 'Knock, Knock let the devil in...');
        const expected = softUniFy.rateArtist("Eminem");
        expect(expected).to.be.deep.equal(0);
    });
    it("rateArtist - 3. Should return 5", () => {
        const softUniFy = new SoftUniFy();
        const down = softUniFy.downloadSong('Eminem', 'Venom', 'Knock, Knock let the devil in...');
        const expected = softUniFy.rateArtist("Eminem", 5);
        expect(expected).to.be.deep.equal(5);
    });
});