Function expectBeat

packages/alphatab/test/audio/MidiFileGenerator.test.ts:1415–1427

(
        tickLookup: MidiTickLookup,
        tick: number,
        fret: number,
        tickDuration: number,
        millisDuration: number
    )

    });

    function expectBeat(
        tickLookup: MidiTickLookup,
        tick: number,
        fret: number,
        tickDuration: number,
        millisDuration: number
    ) {
        const res = tickLookup.findBeat(new Set<number>([0]), tick);
        expect(res).toBeTruthy();
        expect(res!.beat.notes[0].fret).toBe(fret);
        expect(res!.tickDuration).toBe(tickDuration);
        expect(res!.duration).toBe(millisDuration);
    }

    it('beat-tempo-change', async () => {
        /**