mirror of
https://github.com/Tonejs/Tone.js
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900 lines
25 KiB
JavaScript
900 lines
25 KiB
JavaScript
define(["Test", "Tone/core/Transport", "Tone/core/Tone", "helper/Offline",
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"Tone/type/TransportTime", "Tone/signal/Signal", "helper/BufferTest", "Tone/type/Time"],
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function (Test, Transport, Tone, Offline, TransportTime, Signal, BufferTest, Time) {
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describe("Transport", function(){
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function resetTransport(done){
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Tone.Transport.cancel(0);
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Tone.Transport.off("start stop pause loop loopStart loopEnd");
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Tone.Transport.stop();
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// set the defaults
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Tone.Transport.set(Tone.Transport.constructor.defaults);
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setTimeout(done, 300);
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}
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it("exists", function(){
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expect(Tone.Transport).to.exist;
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});
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context("BPM and timeSignature", function(){
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it("can get and set bpm", function(){
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return Offline(function(Transport){
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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", function(){
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return Offline(function(Transport){
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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", function(){
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return Offline(function(Transport){
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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", function(){
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it("can get and set loop points", function(){
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return Offline(function(Transport){
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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", function(){
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var invocations = 0;
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return Offline(function(Transport){
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Transport.schedule(function(){
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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(function(){
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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", function(){
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var looped = false;
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return Offline(function(Transport){
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Transport.on("loop", function(){
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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(function(){
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expect(looped).to.be.true;
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});
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});
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});
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context("nextSubdivision", function(){
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it("returns 0 if the transports not started", function(){
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return Offline(function(Transport){
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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", function(){
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return Offline(function(Transport){
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Transport.start(0);
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return function(time){
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Test.whenBetween(time, 0.05, 0.07, function(){
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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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Test.whenBetween(time, 0.09, 0.1, function(){
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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", function(){
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it("can get and set pulses per quarter", function(){
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return Offline(function(Transport){
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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", function(){
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return Offline(function(Transport){
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Transport.PPQ = 1;
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var id = Transport.schedule(function(time){
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expect(time).to.be.closeTo(Transport.toSeconds("4n"), 0.1);
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Transport.cancel(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", function(){
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return Offline(function(Transport){
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Transport.bpm.value = 120;
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var ppq = 20;
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Transport.PPQ = ppq;
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Transport.start();
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return function(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", function(){
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it("can jump to a specific tick number", function(){
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return Offline(function(Transport){
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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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var tested = false;
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return function(){
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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", function(){
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return Offline(function(Transport){
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expect(Transport.position).to.equal("0:0:0");
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Transport.start(0);
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var tested = false;
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return function(){
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if (!tested){
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tested = true;
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expect(Transport.position).to.not.equal("0:0:0");
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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", function(){
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return Offline(function(Transport){
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expect(Transport.seconds).to.equal(0);
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Transport.start(0.05);
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return function(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", function(){
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return Offline(function(Transport){
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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 function(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", function(){
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return Offline(function(Transport){
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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", function(){
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return Offline(function(Transport){
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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", function(){
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return Offline(function(Transport){
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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") + Time("4n");
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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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});
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context("state", function(){
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it("can start, pause, and restart", function(){
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return Offline(function(Transport){
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Transport.start(0).pause(0.2).start(0.4);
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var pulse = new Signal(0).toMaster();
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Transport.schedule(function(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(function(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 function(time){
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Test.whenBetween(time, 0, 0.2, function(){
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expect(Transport.state).to.equal("started");
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});
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Test.whenBetween(time, 0.2, 0.4, function(){
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expect(Transport.state).to.equal("paused");
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});
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Test.whenBetween(time, 0.4, Infinity, function(){
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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(function(buffer){
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buffer.forEach(function(sample, time){
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Test.whenBetween(time, 0, 0.01, function(){
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expect(sample).to.equal(1);
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});
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Test.whenBetween(time, 0.1, 0.11, function(){
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expect(sample).to.equal(0);
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});
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Test.whenBetween(time, 0.502, 0.51, function(){
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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", function(){
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it("resets ticks on stop but not on pause", function(){
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return Offline(function(Transport){
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Transport.start(0).pause(0.1).stop(0.2);
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var pausedTicks = 0;
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return function(time){
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Test.whenBetween(time, 0, 0.1, function(){
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pausedTicks = Transport.ticks;
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});
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Test.whenBetween(time, 0.1, 0.19, function(){
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expect(Transport.ticks).to.equal(pausedTicks);
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});
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Test.whenBetween(time, 0.2, Infinity, function(){
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expect(Transport.ticks).to.equal(0);
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});
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};
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}, 0.3);
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});
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it("tracks ticks after start", function(){
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return Offline(function(Transport){
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Transport.bpm.value = 120;
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var ppq = Transport.PPQ;
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Transport.start();
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return function(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", function(){
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return Offline(function(Transport){
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Transport.start(0, "200i");
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return function(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", function(){
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return Offline(function(Transport){
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Transport.toggle(0);
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Transport.toggle(0.2);
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return function(time){
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Test.whenBetween(time, 0, 0.2, function(){
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expect(Transport.state).to.equal("started");
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});
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Test.whenBetween(time, 0.2, Infinity, function(){
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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", function(){
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return Offline(function(Transport){
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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 function(time){
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if (time > 0.5){
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expect(Tone.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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});
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context("schedule", function(){
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it ("can schedule an event on the timeline", function(){
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return Offline(function(Transport){
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var eventID = Transport.schedule(function(){}, 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", function(){
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var wasCalled = false;
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return Offline(function(Transport){
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var startTime = 0.1;
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Transport.schedule(function(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(function(){
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expect(wasCalled).to.be.true;
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});
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});
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it ("can schedule events with TransportTime", function(){
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var wasCalled = false;
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return Offline(function(Transport){
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var startTime = 0.1;
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var eighth = Transport.toSeconds("8n");
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Transport.schedule(function(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(function(){
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expect(wasCalled).to.be.true;
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});
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});
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it ("can cancel a scheduled event", function(){
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return Offline(function(Transport){
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var eventID = Transport.schedule(function(){
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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", function(){
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return Offline(function(Transport){
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Transport.schedule(Tone.noOp, 0);
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Transport.schedule(Tone.noOp, 1);
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Transport.schedule(Tone.noOp, 2);
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expect(Transport._timeline.length).to.equal(3);
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Transport.cancel(2);
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expect(Transport._timeline.length).to.equal(2);
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Transport.cancel(0);
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expect(Transport._timeline.length).to.equal(0);
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});
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});
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it ("can cancel the timeline of schedulOnce object", function(){
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return Offline(function(Transport){
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Transport.scheduleOnce(Tone.noOp, 0);
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Transport.scheduleOnce(Tone.noOp, 1);
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Transport.scheduleOnce(Tone.noOp, 2);
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expect(Transport._timeline.length).to.equal(3);
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Transport.cancel(2);
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expect(Transport._timeline.length).to.equal(2);
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Transport.cancel(0);
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expect(Transport._timeline.length).to.equal(0);
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});
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});
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it ("scheduled event anywhere along the timeline", function(){
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var wasCalled = false;
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return Offline(function(Transport){
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var startTime = Transport.now();
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Transport.schedule(function(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(function(){
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expect(wasCalled).to.be.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", function(){
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var wasCalled = false;
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return Offline(function(Transport){
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var first = false;
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Transport.schedule(function(){
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first = true;
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}, 0.1);
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Transport.schedule(function(){
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expect(first).to.be.true;
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wasCalled = true;
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}, 0.11);
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Tone.Transport.start();
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}, 0.2).then(function(){
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expect(wasCalled).to.be.true;
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});
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});
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it ("invokes the event again if the timeline is restarted", function(){
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var iterations = 0;
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return Offline(function(Transport){
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Transport.schedule(function(){
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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(function(){
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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", function(){
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var wasCalled = false;
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return Offline(function(Transport){
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Transport.start(0);
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var wasScheduled = false;
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return function(time){
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if (time > 0.1 && !wasScheduled){
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wasScheduled = true;
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Transport.schedule(function(){
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wasCalled = true;
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}, 0.15);
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}
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}
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}, 0.3).then(function(){
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expect(wasCalled).to.be.true;
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});
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});
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});
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context("scheduleRepeat", function(){
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it ("can schedule a repeated event", function(){
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return Offline(function(Transport){
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var eventID = Transport.scheduleRepeat(function(){}, 1, 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", function(){
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var invoked = false;
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return Offline(function(Transport){
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var startTime = 0.1;
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var eventID = Transport.scheduleRepeat(function(time){
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expect(time).to.be.closeTo(startTime, 0.01);
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invoked = true;
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}, 1, 0);
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Transport.start(startTime);
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}, 0.3).then(function(){
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expect(invoked).to.be.true;
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});
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});
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it ("can schedule events with TransportTime", function(){
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var invoked = false;
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return Offline(function(Transport){
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var startTime = 0.1;
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var eighth = Transport.toSeconds("8n");
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Transport.scheduleRepeat(function(time){
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expect(time).to.be.closeTo(startTime + eighth, 0.01);
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invoked = true;
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}, "1n", TransportTime("8n"));
|
|
Transport.start(startTime);
|
|
}, 0.4).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it ("can clear a scheduled event", function(){
|
|
return Offline(function(Transport){
|
|
var eventID = Transport.scheduleRepeat(function(){
|
|
throw new Error("should not call this function");
|
|
}, 1, 0);
|
|
Transport.clear(eventID);
|
|
Transport.stop();
|
|
});
|
|
});
|
|
|
|
it ("can be scheduled in the future", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
var startTime = 0.1;
|
|
var eventID = Transport.scheduleRepeat(function(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(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it ("repeats a repeat event", function(){
|
|
var invocations = 0;
|
|
return Offline(function(Transport){
|
|
Transport.scheduleRepeat(function(){
|
|
invocations++;
|
|
}, 0.1, 0);
|
|
Transport.start();
|
|
}, 0.5).then(function(){
|
|
expect(invocations).to.equal(6);
|
|
});
|
|
});
|
|
|
|
it ("repeats at the repeat interval", function(){
|
|
var wasCalled = false;
|
|
return Offline(function(Transport){
|
|
var repeatTime = -1;
|
|
Transport.scheduleRepeat(function(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(function(){
|
|
expect(wasCalled).to.be.true;
|
|
});
|
|
});
|
|
|
|
it ("can schedule multiple events and invoke them in the right order", function(){
|
|
var first = false;
|
|
var second = false;
|
|
return Offline(function(Transport){
|
|
var firstID = Transport.scheduleRepeat(function(){
|
|
first = true;
|
|
Transport.clear(firstID);
|
|
}, 1, 0.1);
|
|
var secondID = Transport.scheduleRepeat(function(){
|
|
Transport.clear(secondID);
|
|
expect(first).to.be.true;
|
|
second = true;
|
|
}, 1, 0.11);
|
|
Transport.start();
|
|
}, 0.3).then(function(){
|
|
expect(first);
|
|
expect(second);
|
|
});
|
|
});
|
|
|
|
it ("repeats for the given interval", function(){
|
|
var repeatCount = 0;
|
|
return Offline(function(Transport){
|
|
Transport.scheduleRepeat(function(time){
|
|
repeatCount++;
|
|
}, 0.1, 0, 0.5);
|
|
Transport.start();
|
|
}, 0.6).then(function(){
|
|
expect(repeatCount).to.equal(6);
|
|
});
|
|
});
|
|
|
|
it ("can add an event after the Transport is started", function(){
|
|
var invocations = 0;
|
|
return Offline(function(Transport){
|
|
Transport.start(0);
|
|
var wasScheduled = false;
|
|
var times = [0.15, 0.3]
|
|
return function(time){
|
|
if (time > 0.1 && !wasScheduled){
|
|
wasScheduled = true;
|
|
Transport.scheduleRepeat(function(time){
|
|
expect(time).to.be.closeTo(times[invocations], 0.01);
|
|
invocations++;
|
|
}, 0.15, 0.15);
|
|
}
|
|
}
|
|
}, 0.31).then(function(){
|
|
expect(invocations).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it ("can add an event to the past after the Transport is started", function(){
|
|
var invocations = 0;
|
|
return Offline(function(Transport){
|
|
Transport.start(0);
|
|
var wasScheduled = false;
|
|
var times = [0.15, 0.25]
|
|
return function(time){
|
|
if (time >= 0.12 && !wasScheduled){
|
|
wasScheduled = true;
|
|
Transport.scheduleRepeat(function(time){
|
|
expect(time).to.be.closeTo(times[invocations], 0.01);
|
|
invocations++;
|
|
}, 0.1, 0.05);
|
|
}
|
|
}
|
|
}, 0.3).then(function(){
|
|
expect(invocations).to.equal(2);
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
context("scheduleOnce", function(){
|
|
|
|
it ("can schedule a single event on the timeline", function(){
|
|
return Offline(function(Transport){
|
|
var eventID = Transport.scheduleOnce(function(){}, 0);
|
|
expect(eventID).to.be.a.number;
|
|
});
|
|
});
|
|
|
|
|
|
it ("scheduled event gets invoked with the time of the event", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
var startTime = 0.1;
|
|
var eventID = Transport.scheduleOnce(function(time){
|
|
invoked = true;
|
|
Transport.clear(eventID);
|
|
expect(time).to.be.closeTo(startTime, 0.01);
|
|
}, 0);
|
|
Tone.Transport.start(startTime);
|
|
}, 0.2).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it ("can schedule events with TransportTime", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
var startTime = 0.1;
|
|
var eighth = Transport.toSeconds("8n");
|
|
Transport.scheduleOnce(function(time){
|
|
expect(time).to.be.closeTo(startTime + eighth, 0.01);
|
|
invoked = true;
|
|
}, TransportTime("8n"));
|
|
Transport.start(startTime);
|
|
}, 0.5).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
|
|
it ("can cancel a scheduled event", function(){
|
|
return Offline(function(Transport){
|
|
var eventID = Transport.scheduleOnce(function(){
|
|
throw new Error("should not call this function");
|
|
}, 0);
|
|
Transport.clear(eventID);
|
|
Transport.start();
|
|
});
|
|
});
|
|
|
|
it ("can be scheduled in the future", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
var startTime = Tone.Transport.now() + 0.1;
|
|
var eventID = Transport.scheduleOnce(function(time){
|
|
Transport.clear(eventID);
|
|
expect(time).to.be.closeTo(startTime + 0.3, 0.01);
|
|
invoked = true;
|
|
}, 0.3);
|
|
Transport.start(startTime);
|
|
}, 0.5).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it ("the event is removed after is is invoked", function(){
|
|
var iterations = 0;
|
|
return Offline(function(Transport){
|
|
Transport.scheduleOnce(function(){
|
|
iterations++;
|
|
}, 0);
|
|
Transport.start().stop("+0.1").start("+0.2");
|
|
}, 0.5).then(function(){
|
|
expect(iterations).to.be.lessThan(2);
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
context("events", function(){
|
|
|
|
it("invokes start/stop/pause events", function(){
|
|
var invocations = 0;
|
|
return Offline(function(Transport){
|
|
Tone.Transport.on("start pause stop", function(){
|
|
invocations++;
|
|
});
|
|
Transport.start().stop(0.1).start(0.2);
|
|
}, 0.5).then(function(){
|
|
expect(invocations).to.equal(3);
|
|
});
|
|
});
|
|
|
|
it("invokes start event with correct offset", function(){
|
|
var wasCalled = false;
|
|
return Offline(function(Transport){
|
|
Transport.on("start", function(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(function(){
|
|
expect(wasCalled).to.be.true;
|
|
});
|
|
});
|
|
|
|
it("invokes the event just before the scheduled time", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
Transport.on("start", function(time, offset){
|
|
expect(time - Transport.now()).to.be.within(0, 0.05);
|
|
expect(offset).to.equal(0);
|
|
invoked = true;
|
|
});
|
|
Transport.start(0.2);
|
|
}, 0.3).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it("passes in the time argument to the events", function(){
|
|
var invocations = 0;
|
|
return Offline(function(Transport){
|
|
var now = Transport.now();
|
|
Transport.on("start", function(time){
|
|
invocations++;
|
|
expect(time).to.be.closeTo(now + 0.1, 0.01);
|
|
});
|
|
Transport.on("stop", function(time){
|
|
invocations++;
|
|
expect(time).to.be.closeTo(now + 0.2, 0.01);
|
|
});
|
|
Transport.start("+0.1").stop("+0.2");
|
|
}, 0.3).then(function(){
|
|
expect(invocations).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it("invokes the 'loop' method on loop", function(){
|
|
var loops = 0;
|
|
return Offline(function(Transport){
|
|
var sixteenth = Transport.toSeconds("16n");
|
|
Transport.setLoopPoints(0, sixteenth);
|
|
Transport.loop = true;
|
|
var lastLoop = -1;
|
|
Transport.on("loop", function(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(function(){
|
|
expect(loops).to.equal(5);
|
|
});
|
|
});
|
|
});
|
|
|
|
context("swing", function(){
|
|
|
|
it("can get/set the swing subdivision", function(){
|
|
return Offline(function(Transport){
|
|
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", function(){
|
|
return Offline(function(Transport){
|
|
Transport.swing = 0.5;
|
|
expect(Transport.swing).to.equal(0.5);
|
|
Transport.swing = 0;
|
|
expect(Transport.swing).to.equal(0);
|
|
});
|
|
});
|
|
|
|
it("can swing", function(){
|
|
var invocations = 0;
|
|
return Offline(function(Transport){
|
|
Transport.swing = 1;
|
|
Transport.swingSubdivision = "8n";
|
|
var eightNote = Transport.toSeconds("8n");
|
|
//downbeat, no swing
|
|
Transport.schedule(function(time){
|
|
invocations++;
|
|
expect(time).is.closeTo(0, 0.001);
|
|
}, 0);
|
|
//eighth note has swing
|
|
Transport.schedule(function(time){
|
|
invocations++;
|
|
expect(time).is.closeTo(eightNote * 5/3, 0.001);
|
|
}, "8n");
|
|
//sixteenth note is also swung
|
|
Transport.schedule(function(time){
|
|
invocations++;
|
|
expect(time).is.closeTo(eightNote, 0.05);
|
|
}, "16n");
|
|
//no swing on the quarter
|
|
Transport.schedule(function(time){
|
|
invocations++;
|
|
expect(time).is.closeTo(eightNote * 2, 0.001);
|
|
}, "4n");
|
|
Transport.start(0).stop(0.7);
|
|
}, 0.7).then(function(){
|
|
expect(invocations).to.equal(4);
|
|
});
|
|
});
|
|
});
|
|
|
|
});
|
|
});
|