mirror of
https://github.com/Tonejs/Tone.js
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972 lines
26 KiB
TypeScript
972 lines
26 KiB
TypeScript
import { expect } from "chai";
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import { atTime, Offline, whenBetween } from "test/helper/Offline";
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import { Time } from "Tone/core/type/Time";
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import { noOp } from "Tone/core/util/Interface";
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import { Signal } from "../../signal/Signal";
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import { TransportTime } from "../type/TransportTime";
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import { Transport } from "./Transport";
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// importing for side affects
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import "../context/Destination";
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describe("Transport", () => {
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context("BPM and timeSignature", () => {
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it("can get and set bpm", () => {
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return Offline((context) => {
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const transport = new Transport({ context });
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transport.bpm.value = 125;
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expect(transport.bpm.value).to.be.closeTo(125, 0.001);
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transport.bpm.value = 120;
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expect(transport.bpm.value).to.equal(120);
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});
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});
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it("can get and set timeSignature as both an array or number", () => {
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return Offline((context) => {
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const transport = new Transport({ context });
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transport.timeSignature = [6, 8];
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expect(transport.timeSignature).to.equal(3);
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transport.timeSignature = 5;
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expect(transport.timeSignature).to.equal(5);
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});
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});
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it("can get and set timeSignature as both an array or number", () => {
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return Offline((context) => {
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const transport = new Transport({ context });
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transport.timeSignature = [6, 8];
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expect(transport.timeSignature).to.equal(3);
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transport.timeSignature = 5;
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expect(transport.timeSignature).to.equal(5);
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});
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});
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});
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context("looping", () => {
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it("can get and set loop points", () => {
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return Offline((context) => {
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const transport = new Transport({ context });
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transport.loopStart = 0.2;
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transport.loopEnd = 0.4;
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expect(transport.loopStart).to.be.closeTo(0.2, 0.01);
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expect(transport.loopEnd).to.be.closeTo(0.4, 0.01);
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transport.setLoopPoints(0, "1m");
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expect(transport.loopStart).to.be.closeTo(0, 0.01);
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expect(transport.loopEnd).to.be.closeTo(transport.toSeconds("1m"), 0.01);
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});
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});
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it("can loop events scheduled on the transport", () => {
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let invocations = 0;
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return Offline((context) => {
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const transport = new Transport({ context });
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transport.schedule((time) => {
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invocations++;
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}, 0);
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transport.setLoopPoints(0, 0.1).start(0);
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transport.loop = true;
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}, 0.41).then(() => {
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expect(invocations).to.equal(5);
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});
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});
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it("jumps to the loopStart after the loopEnd point", () => {
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let looped = false;
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return Offline((context) => {
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const transport = new Transport({ context });
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transport.on("loop", () => {
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looped = true;
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});
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transport.loop = true;
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transport.loopEnd = 1;
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transport.seconds = 2;
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transport.start();
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}, 0.4).then(() => {
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expect(looped).to.equal(true);
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});
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});
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});
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context("nextSubdivision", () => {
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it("returns 0 if the transports not started", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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expect(transport.nextSubdivision()).to.equal(0);
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});
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});
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it("can get the next subdivision of the transport", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.start(0);
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return time => {
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whenBetween(time, 0.05, 0.07, () => {
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expect(transport.nextSubdivision(0.5)).to.be.closeTo(0.5, 0.01);
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expect(transport.nextSubdivision(0.04)).to.be.closeTo(0.08, 0.01);
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expect(transport.nextSubdivision(2)).to.be.closeTo(2, 0.01);
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});
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whenBetween(time, 0.09, 0.1, () => {
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expect(transport.nextSubdivision(0.04)).to.be.closeTo(0.12, 0.01);
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expect(transport.nextSubdivision("8n")).to.be.closeTo(0.25, 0.01);
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});
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};
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}, 0.1);
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});
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});
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context("PPQ", () => {
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it("can get and set pulses per quarter", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.PPQ = 96;
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expect(transport.PPQ).to.equal(96);
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});
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});
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it("schedules a quarter note at the same time with a different PPQ", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.PPQ = 1;
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const id = transport.schedule(time => {
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expect(time).to.be.closeTo(transport.toSeconds("4n"), 0.1);
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transport.clear(id);
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}, "4n");
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transport.start();
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});
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});
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it("invokes the right number of ticks with a different PPQ", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.bpm.value = 120;
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const ppq = 20;
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transport.PPQ = ppq;
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transport.start();
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return time => {
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if (time > 0.5) {
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expect(transport.ticks).to.be.within(ppq, ppq * 1.2);
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}
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};
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}, 0.55);
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});
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});
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context("position", () => {
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it("can jump to a specific tick number", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.ticks = 200;
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expect(transport.ticks).to.equal(200);
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transport.start(0);
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let tested = false;
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return () => {
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if (!tested) {
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expect(transport.ticks).to.at.least(200);
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tested = true;
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}
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};
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}, 0.1);
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});
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it("can get the current position in BarsBeatsSixteenths", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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expect(transport.position).to.equal("0:0:0");
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transport.start(0);
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return atTime(0.05, () => {
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expect(transport.position).to.not.equal("0:0:0");
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});
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}, 0.1);
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});
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it("can get the current position in seconds", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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expect(transport.seconds).to.equal(0);
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transport.start(0.05);
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return time => {
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if (time > 0.05) {
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expect(transport.seconds).to.be.closeTo(time - 0.05, 0.01);
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}
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};
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}, 0.1);
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});
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it("can get the current position in seconds during a bpm ramp", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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expect(transport.seconds).to.equal(0);
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transport.start(0.05);
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transport.bpm.linearRampTo(60, 0.5, 0.5);
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return time => {
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if (time > 0.05) {
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expect(transport.seconds).to.be.closeTo(time - 0.05, 0.01);
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}
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};
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}, 0.7);
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});
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it("can set the current position in seconds", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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expect(transport.seconds).to.equal(0);
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transport.seconds = 3;
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expect(transport.seconds).to.be.closeTo(3, 0.01);
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});
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});
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it("can set the current position in BarsBeatsSixteenths", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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expect(transport.position).to.equal("0:0:0");
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transport.position = "3:0";
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expect(transport.position).to.equal("3:0:0");
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transport.position = "0:0";
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expect(transport.position).to.equal("0:0:0");
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});
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});
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it("can get the progress of the loop", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.setLoopPoints(0, "1m").start();
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transport.loop = true;
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expect(transport.progress).to.be.equal(0);
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transport.position = "2n";
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expect(transport.progress).to.be.closeTo(0.5, 0.001);
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transport.position = Time("2n").valueOf() + Time("4n").valueOf();
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expect(transport.progress).to.be.closeTo(0.75, 0.001);
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});
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});
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it("progress is always 0 when not looping", () => {
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return Offline(({ transport }) => {
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transport.loop = false;
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transport.start();
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return atTime(0.1, () => {
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expect(transport.progress).to.be.equal(0);
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});
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}, 0.2);
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});
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});
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context("state", () => {
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it("can start, pause, and restart", () => {
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return Offline(({ transport }) => {
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transport.start(0).pause(0.2).start(0.4);
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const pulse = new Signal(0).toDestination();
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transport.schedule(time => {
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pulse.setValueAtTime(1, time);
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pulse.setValueAtTime(0, time + 0.1);
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}, 0);
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transport.schedule(time => {
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pulse.setValueAtTime(1, time);
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pulse.setValueAtTime(0, time + 0.1);
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}, 0.3);
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return time => {
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whenBetween(time, 0, 0.2, () => {
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expect(transport.state).to.equal("started");
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});
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whenBetween(time, 0.2, 0.4, () => {
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expect(transport.state).to.equal("paused");
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});
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whenBetween(time, 0.4, Infinity, () => {
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expect(transport.state).to.equal("started");
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});
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};
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}, 0.6).then(buffer => {
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buffer.forEach((sample, time) => {
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whenBetween(time, 0, 0.01, () => {
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expect(sample).to.equal(1);
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});
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whenBetween(time, 0.1, 0.11, () => {
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expect(sample).to.equal(0);
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});
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whenBetween(time, 0.502, 0.51, () => {
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expect(sample).to.equal(1);
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});
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});
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});
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});
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});
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context("ticks", () => {
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it("resets ticks on stop but not on pause", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.start(0).pause(0.1).stop(0.2);
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expect(transport.getTicksAtTime(0)).to.be.equal(Math.floor(transport.PPQ * 0));
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expect(transport.getTicksAtTime(0.05)).to.be.equal(Math.floor(transport.PPQ * 0.1));
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expect(transport.getTicksAtTime(0.1)).to.be.equal(Math.floor(transport.PPQ * 0.2));
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expect(transport.getTicksAtTime(0.15)).to.be.equal(Math.floor(transport.PPQ * 0.2));
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expect(transport.getTicksAtTime(0.2)).to.be.equal(0);
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}, 0.3);
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});
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it("tracks ticks after start", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.bpm.value = 120;
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const ppq = transport.PPQ;
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transport.start();
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return time => {
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if (time > 0.5) {
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expect(transport.ticks).to.at.least(ppq);
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}
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};
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}, 0.6);
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});
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it("can start with a tick offset", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.start(0, "200i");
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return time => {
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if (time < 0.01) {
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expect(transport.ticks).to.at.least(200);
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}
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};
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}, 0.1);
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});
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it("can toggle the state of the transport", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.toggle(0);
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transport.toggle(0.2);
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return time => {
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whenBetween(time, 0, 0.2, () => {
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expect(transport.state).to.equal("started");
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});
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whenBetween(time, 0.2, Infinity, () => {
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expect(transport.state).to.equal("stopped");
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});
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};
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}, 0.1);
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});
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it("tracks ticks correctly with a different PPQ and BPM", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.PPQ = 96;
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transport.bpm.value = 90;
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transport.start();
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return time => {
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if (time > 0.5) {
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expect(transport.ticks).to.at.least(72);
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}
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};
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}, 0.6);
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});
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it("can set the ticks while started", () => {
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let invocations = 0;
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const times = [0, 1.5];
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return Offline(({ transport }) => {
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transport.PPQ = 1;
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transport.schedule(time => {
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expect(time).to.be.closeTo(times[invocations], 0.01);
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invocations++;
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}, 0);
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transport.start(0);
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return atTime(1.1, () => {
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transport.ticks = 0;
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});
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}, 2.5).then(() => {
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expect(invocations).to.equal(2);
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});
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});
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});
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context("schedule", () => {
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it("can schedule an event on the timeline", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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const eventID = transport.schedule(() => { }, 0);
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expect(eventID).to.be.a("number");
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});
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});
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it("scheduled event gets invoked with the time of the event", () => {
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let wasCalled = false;
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return Offline(context => {
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const transport = new Transport({ context });
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const startTime = 0.1;
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transport.schedule(time => {
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expect(time).to.be.closeTo(startTime, 0.01);
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wasCalled = true;
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}, 0);
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transport.start(startTime);
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}, 0.2).then(() => {
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expect(wasCalled).to.equal(true);
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});
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});
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it("can schedule events with TransportTime", () => {
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let wasCalled = false;
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return Offline(context => {
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const transport = new Transport({ context });
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const startTime = 0.1;
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const eighth = transport.toSeconds("8n");
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transport.schedule(time => {
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expect(time).to.be.closeTo(startTime + eighth, 0.01);
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wasCalled = true;
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}, TransportTime("8n"));
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transport.start(startTime);
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}, 0.5).then(() => {
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expect(wasCalled).to.equal(true);
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});
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});
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it("can clear a scheduled event", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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const eventID = transport.schedule(() => {
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throw new Error("should not call this function");
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}, 0);
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transport.clear(eventID);
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transport.start();
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});
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});
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it("can cancel the timeline of scheduled object", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.schedule(() => {
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throw new Error("should not call this");
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}, 0);
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transport.cancel(0);
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transport.start(0);
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});
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});
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it("can cancel the timeline of scheduleOnce object", () => {
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return Offline(context => {
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const transport = new Transport({ context });
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transport.scheduleOnce(() => {
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throw new Error("should not call this");
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}, 0);
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transport.cancel(0);
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transport.start(0);
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});
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});
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it("scheduled event anywhere along the timeline", () => {
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let wasCalled = false;
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return Offline(context => {
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const transport = new Transport({ context });
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const startTime = transport.now();
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transport.schedule(time => {
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expect(time).to.be.closeTo(startTime + 0.5, 0.001);
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wasCalled = true;
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}, 0.5);
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transport.start(startTime);
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}, 0.6).then(() => {
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expect(wasCalled).to.equal(true);
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});
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});
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it("can schedule multiple events and invoke them in the right order", () => {
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let wasCalled = false;
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return Offline(context => {
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const transport = new Transport({ context });
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let first = false;
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transport.schedule(() => {
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first = true;
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}, 0.1);
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transport.schedule(() => {
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expect(first).to.equal(true);
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wasCalled = true;
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}, 0.11);
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transport.start();
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}, 0.2).then(() => {
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expect(wasCalled).to.equal(true);
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});
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});
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it("invokes the event again if the timeline is restarted", () => {
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let iterations = 0;
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return Offline(context => {
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const transport = new Transport({ context });
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transport.schedule(() => {
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iterations++;
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}, 0.05);
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transport.start(0).stop(0.1).start(0.2);
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}, 0.3).then(() => {
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expect(iterations).to.be.equal(2);
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});
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});
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it("can add an event after the Transport is started", () => {
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let wasCalled = false;
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return Offline(context => {
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const transport = new Transport({ context });
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transport.start(0);
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let wasScheduled = false;
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return time => {
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if (time > 0.1 && !wasScheduled) {
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wasScheduled = true;
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transport.schedule(() => {
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wasCalled = true;
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}, 0.15);
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}
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|
};
|
|
}, 0.3).then(() => {
|
|
expect(wasCalled).to.equal(true);
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
context("scheduleRepeat", () => {
|
|
|
|
it("can schedule a repeated event", () => {
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const eventID = transport.scheduleRepeat(noOp, 1);
|
|
expect(eventID).to.be.a("number");
|
|
});
|
|
});
|
|
|
|
it("scheduled event gets invoked with the time of the event", () => {
|
|
let invoked = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const startTime = 0.1;
|
|
const eventID = transport.scheduleRepeat(time => {
|
|
expect(time).to.be.closeTo(startTime, 0.01);
|
|
invoked = true;
|
|
transport.clear(eventID);
|
|
}, 1, 0);
|
|
transport.start(startTime);
|
|
}, 0.3).then(() => {
|
|
expect(invoked).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("can cancel the timeline of scheduleRepeat", () => {
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.scheduleRepeat(() => {
|
|
throw new Error("should not call this");
|
|
}, 0.01, 0);
|
|
transport.cancel(0);
|
|
transport.start(0);
|
|
});
|
|
});
|
|
|
|
it("can schedule events with TransportTime", () => {
|
|
let invoked = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const startTime = 0.1;
|
|
const eighth = transport.toSeconds("8n");
|
|
transport.scheduleRepeat(time => {
|
|
expect(time).to.be.closeTo(startTime + eighth, 0.01);
|
|
invoked = true;
|
|
}, "1n", TransportTime("8n"));
|
|
transport.start(startTime);
|
|
}, 0.4).then(() => {
|
|
expect(invoked).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("can clear a scheduled event", () => {
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const eventID = transport.scheduleRepeat(() => {
|
|
throw new Error("should not call this function");
|
|
}, 1, 0);
|
|
transport.clear(eventID);
|
|
transport.stop();
|
|
});
|
|
});
|
|
|
|
it("can be scheduled in the future", () => {
|
|
let invoked = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const startTime = 0.1;
|
|
const eventID = transport.scheduleRepeat(time => {
|
|
transport.clear(eventID);
|
|
expect(time).to.be.closeTo(startTime + 0.2, 0.01);
|
|
invoked = true;
|
|
}, 1, 0.2);
|
|
transport.start(startTime);
|
|
}, 0.5).then(() => {
|
|
expect(invoked).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("repeats a repeat event", () => {
|
|
let invocations = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.scheduleRepeat(() => {
|
|
invocations++;
|
|
}, 0.1, 0);
|
|
transport.start();
|
|
}, 0.51).then(() => {
|
|
expect(invocations).to.equal(6);
|
|
});
|
|
});
|
|
|
|
it("repeats at the repeat interval", () => {
|
|
let wasCalled = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
let repeatTime = -1;
|
|
transport.scheduleRepeat(time => {
|
|
if (repeatTime !== -1) {
|
|
expect(time - repeatTime).to.be.closeTo(0.1, 0.01);
|
|
}
|
|
repeatTime = time;
|
|
wasCalled = true;
|
|
}, 0.1, 0);
|
|
transport.start();
|
|
}, 0.5).then(() => {
|
|
expect(wasCalled).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("can schedule multiple events and invoke them in the right order", () => {
|
|
let first = false;
|
|
let second = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const firstID = transport.scheduleRepeat(() => {
|
|
first = true;
|
|
transport.clear(firstID);
|
|
}, 1, 0.1);
|
|
const secondID = transport.scheduleRepeat(() => {
|
|
transport.clear(secondID);
|
|
expect(first).to.equal(true);
|
|
second = true;
|
|
}, 1, 0.11);
|
|
transport.start();
|
|
}, 0.3).then(() => {
|
|
expect(first);
|
|
expect(second);
|
|
});
|
|
});
|
|
|
|
it("repeats for the given interval", () => {
|
|
let repeatCount = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.scheduleRepeat(time => {
|
|
repeatCount++;
|
|
}, 0.1, 0, 0.5);
|
|
transport.start();
|
|
}, 0.61).then(() => {
|
|
expect(repeatCount).to.equal(5);
|
|
});
|
|
});
|
|
|
|
it("can add an event after the Transport is started", () => {
|
|
let invocations = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.start(0);
|
|
let wasScheduled = false;
|
|
const times = [0.15, 0.3];
|
|
return time => {
|
|
if (time > 0.1 && !wasScheduled) {
|
|
wasScheduled = true;
|
|
transport.scheduleRepeat(repeatedTime => {
|
|
expect(repeatedTime).to.be.closeTo(times[invocations], 0.01);
|
|
invocations++;
|
|
}, 0.15, 0.15);
|
|
}
|
|
};
|
|
}, 0.31).then(() => {
|
|
expect(invocations).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it("can add an event to the past after the Transport is started", () => {
|
|
let invocations = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.start(0);
|
|
let wasScheduled = false;
|
|
const times = [0.15, 0.25];
|
|
return time => {
|
|
if (time >= 0.12 && !wasScheduled) {
|
|
wasScheduled = true;
|
|
transport.scheduleRepeat(repeatedTime => {
|
|
expect(repeatedTime).to.be.closeTo(times[invocations], 0.01);
|
|
invocations++;
|
|
}, 0.1, 0.05);
|
|
}
|
|
};
|
|
}, 0.3).then(() => {
|
|
expect(invocations).to.equal(2);
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
context("scheduleOnce", () => {
|
|
|
|
it("can schedule a single event on the timeline", () => {
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const eventID = transport.scheduleOnce(() => {}, 0);
|
|
expect(eventID).to.be.a("number");
|
|
});
|
|
});
|
|
|
|
it("scheduled event gets invoked with the time of the event", () => {
|
|
let invoked = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const startTime = 0.1;
|
|
const eventID = transport.scheduleOnce(time => {
|
|
invoked = true;
|
|
transport.clear(eventID);
|
|
expect(time).to.be.closeTo(startTime, 0.01);
|
|
}, 0);
|
|
transport.start(startTime);
|
|
}, 0.2).then(() => {
|
|
expect(invoked).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("can schedule events with TransportTime", () => {
|
|
let invoked = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const startTime = 0.1;
|
|
const eighth = transport.toSeconds("8n");
|
|
transport.scheduleOnce(time => {
|
|
expect(time).to.be.closeTo(startTime + eighth, 0.01);
|
|
invoked = true;
|
|
}, TransportTime("8n"));
|
|
transport.start(startTime);
|
|
}, 0.5).then(() => {
|
|
expect(invoked).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("can clear a scheduled event", () => {
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const eventID = transport.scheduleOnce(() => {
|
|
throw new Error("should not call this function");
|
|
}, 0);
|
|
transport.clear(eventID);
|
|
transport.start();
|
|
});
|
|
});
|
|
|
|
it("can be scheduled in the future", () => {
|
|
let invoked = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const startTime = transport.now() + 0.1;
|
|
const eventID = transport.scheduleOnce(time => {
|
|
transport.clear(eventID);
|
|
expect(time).to.be.closeTo(startTime + 0.3, 0.01);
|
|
invoked = true;
|
|
}, 0.3);
|
|
transport.start(startTime);
|
|
}, 0.5).then(() => {
|
|
expect(invoked).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("the event is removed after is is invoked", () => {
|
|
let iterations = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.scheduleOnce(() => {
|
|
iterations++;
|
|
}, 0);
|
|
transport.start().stop("+0.1").start("+0.2");
|
|
}, 0.5).then(() => {
|
|
expect(iterations).to.be.lessThan(2);
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
context("events", () => {
|
|
|
|
it("invokes start/stop/pause events", () => {
|
|
let invocations = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.on("start", () => {
|
|
invocations++;
|
|
});
|
|
transport.on("stop", () => {
|
|
invocations++;
|
|
});
|
|
transport.on("pause", () => {
|
|
invocations++;
|
|
});
|
|
transport.start().stop(0.1).start(0.2);
|
|
}, 0.5).then(() => {
|
|
expect(invocations).to.equal(3);
|
|
});
|
|
});
|
|
|
|
it("invokes start event with correct offset", () => {
|
|
let wasCalled = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.on("start", (time, offset) => {
|
|
expect(time).to.be.closeTo(0.2, 0.01);
|
|
expect(offset).to.be.closeTo(0.5, 0.001);
|
|
wasCalled = true;
|
|
});
|
|
transport.start(0.2, "4n");
|
|
}, 0.3).then(() => {
|
|
expect(wasCalled).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("invokes the event just before the scheduled time", () => {
|
|
let invoked = false;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.on("start", (time, offset) => {
|
|
expect(time - transport.context.currentTime).to.be.closeTo(0, 0.01);
|
|
expect(offset).to.equal(0);
|
|
invoked = true;
|
|
});
|
|
transport.start(0.2);
|
|
}, 0.3).then(() => {
|
|
expect(invoked).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("passes in the time argument to the events", () => {
|
|
let invocations = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const now = transport.now();
|
|
transport.on("start", time => {
|
|
invocations++;
|
|
expect(time).to.be.closeTo(now + 0.1, 0.01);
|
|
});
|
|
transport.on("stop", time => {
|
|
invocations++;
|
|
expect(time).to.be.closeTo(now + 0.2, 0.01);
|
|
});
|
|
transport.start("+0.1").stop("+0.2");
|
|
}, 0.3).then(() => {
|
|
expect(invocations).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it("invokes the 'loop' method on loop", () => {
|
|
let loops = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
const sixteenth = transport.toSeconds("16n");
|
|
transport.setLoopPoints(0, sixteenth);
|
|
transport.loop = true;
|
|
let lastLoop = -1;
|
|
transport.on("loop", time => {
|
|
loops++;
|
|
if (lastLoop !== -1) {
|
|
expect(time - lastLoop).to.be.closeTo(sixteenth, 0.001);
|
|
}
|
|
lastLoop = time;
|
|
});
|
|
transport.start(0).stop(sixteenth * 5.1);
|
|
}, 0.7).then(() => {
|
|
expect(loops).to.equal(5);
|
|
});
|
|
});
|
|
});
|
|
|
|
context("swing", () => {
|
|
|
|
it("can get/set the swing subdivision", () => {
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.swingSubdivision = "8n";
|
|
expect(transport.swingSubdivision).to.equal("8n");
|
|
transport.swingSubdivision = "4n";
|
|
expect(transport.swingSubdivision).to.equal("4n");
|
|
});
|
|
});
|
|
|
|
it("can get/set the swing amount", () => {
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.swing = 0.5;
|
|
expect(transport.swing).to.equal(0.5);
|
|
transport.swing = 0;
|
|
expect(transport.swing).to.equal(0);
|
|
});
|
|
});
|
|
|
|
it("can swing", () => {
|
|
let invocations = 0;
|
|
return Offline(context => {
|
|
const transport = new Transport({ context });
|
|
transport.swing = 1;
|
|
transport.swingSubdivision = "8n";
|
|
const eightNote = transport.toSeconds("8n");
|
|
// downbeat, no swing
|
|
transport.schedule(time => {
|
|
invocations++;
|
|
expect(time).is.closeTo(0, 0.001);
|
|
}, 0);
|
|
// eighth note has swing
|
|
transport.schedule(time => {
|
|
invocations++;
|
|
expect(time).is.closeTo(eightNote * 5 / 3, 0.001);
|
|
}, "8n");
|
|
// sixteenth note is also swung
|
|
transport.schedule(time => {
|
|
invocations++;
|
|
expect(time).is.closeTo(eightNote, 0.05);
|
|
}, "16n");
|
|
// no swing on the quarter
|
|
transport.schedule(time => {
|
|
invocations++;
|
|
expect(time).is.closeTo(eightNote * 2, 0.001);
|
|
}, "4n");
|
|
transport.start(0).stop(0.7);
|
|
}, 0.7).then(() => {
|
|
expect(invocations).to.equal(4);
|
|
});
|
|
});
|
|
});
|
|
|
|
});
|