test('not be able to be transformed into drop 3 chords when its a 3 note chord', () => {
    const chord = new ClosedChord(Pitch.C, ChordPattern.Major, Duration.Quarter, Octave.C4);

    const expectedPitches = [Pitch.C, Pitch.E, Pitch.G];
    expect(Array.from(chord.drop3())).toStrictEqual(expectedPitches);