mirror of
https://github.com/Tonejs/Tone.js
synced 2024-11-16 16:48:00 +00:00
329 lines
No EOL
8.5 KiB
JavaScript
329 lines
No EOL
8.5 KiB
JavaScript
define(["Test", "Tone/core/Clock", "helper/Offline"],
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function (Test, Clock, Offline) {
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describe("Clock", function(){
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it ("can be created and disposed", function(){
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var clock = new Clock();
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clock.dispose();
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Test.wasDisposed(clock);
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});
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context("Get/Set values", function(){
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it ("can get and set the frequency", function(){
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var clock = new Clock(function(){}, 2);
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expect(clock.frequency.value).to.equal(2);
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clock.frequency.value = 0.2;
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expect(clock.frequency.value).to.be.closeTo(0.2, 0.001);
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clock.dispose();
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});
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it ("invokes the callback when started", function(done){
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var clock = new Clock(function(){
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clock.dispose();
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done();
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}, 10).start();
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});
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it ("can be constructed with an options object", function(done){
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var clock = new Clock({
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"callback" : function(){
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clock.dispose();
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done();
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},
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"frequency" : 8
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}).start();
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expect(clock.frequency.value).to.equal(8);
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});
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it ("can get and set it's values with the set/get", function(){
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var clock = new Clock();
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clock.set({
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"frequency" : 2
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});
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var gotValues = clock.get();
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expect(gotValues.frequency).to.equal(2);
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clock.dispose();
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});
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});
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context("State", function(){
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it ("correctly returns the scheduled play state", function(){
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return Offline(function(){
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var clock = new Clock();
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expect(clock.state).to.equal("stopped");
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clock.start(0).stop(0.2);
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expect(clock.state).to.equal("started");
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return function(sample, time){
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Test.whenBetween(time, 0, 0.2, function(){
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expect(clock.state).to.equal("started");
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});
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Test.whenBetween(time, 0.2, Infinity, function(){
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expect(clock.state).to.equal("stopped");
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});
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};
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}, 0.3);
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});
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it("can start, pause, and stop", function(){
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return Offline(function(){
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var clock = new Clock();
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expect(clock.state).to.equal("stopped");
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clock.start(0).pause(0.2).stop(0.4);
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expect(clock.state).to.equal("started");
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return function(sample, time){
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Test.whenBetween(time, 0, 0.2, function(){
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expect(clock.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(clock.state).to.equal("paused");
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});
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Test.whenBetween(time, 0.4, Infinity, function(){
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expect(clock.state).to.equal("stopped");
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});
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};
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}, 0.5);
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});
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it("can schedule multiple start and stops", function(){
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return Offline(function(){
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var clock = new Clock();
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expect(clock.state).to.equal("stopped");
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clock.start(0).pause(0.1).stop(0.2).start(0.3).stop(0.4);
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expect(clock.state).to.equal("started");
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return function(sample, time){
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Test.whenBetween(time, 0.1, 0.2, function(){
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expect(clock.state).to.equal("paused");
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});
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Test.whenBetween(time, 0.2, 0.3, function(){
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expect(clock.state).to.equal("stopped");
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});
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Test.whenBetween(time, 0.3, 0.4, function(){
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expect(clock.state).to.equal("started");
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});
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};
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}, 0.5);
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});
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});
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context("Scheduling", function(){
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it ("passes a time to the callback", function(done){
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var clock = new Clock(function(time){
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expect(time).to.be.a.number;
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clock.dispose();
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done();
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}, 10).start();
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});
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it ("invokes the callback with a time great than now", function(done){
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var clock = new Clock(function(time){
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clock.dispose();
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expect(time).to.be.greaterThan(now);
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done();
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}, 10);
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var now = clock.now();
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var startTime = now + 0.1;
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clock.start(startTime);
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});
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it ("invokes the first callback at the given start time", function(done){
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var clock = new Clock(function(time){
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clock.dispose();
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expect(time).to.equal(startTime);
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done();
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}, 10);
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var startTime = clock.now() + 0.1;
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clock.start(startTime);
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});
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it ("can be scheduled to stop in the future", function(){
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var invokations = 0;
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return Offline(function(){
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new Clock(function(){
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invokations++;
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}, 0.5).start(0);
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}, 0.6).then(function(){
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expect(invokations).to.equal(1);
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});
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});
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it ("invokes the right number of callbacks given the duration", function(){
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var invokations = 0;
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return Offline(function(){
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new Clock(function(){
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invokations++;
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}, 10).start(0).stop(0.49);
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}, 0.6).then(function(){
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expect(invokations).to.equal(5);
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});
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});
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it ("can schedule the frequency of the clock", function(){
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var invokations = 0;
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return Offline(function(){
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var clock = new Clock(function(){
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invokations++;
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}, 2);
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clock.start(0).stop(1.1);
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clock.frequency.setValueAtTime(4, 0.5);
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}, 2).then(function(){
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expect(invokations).to.equal(4);
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});
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});
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});
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context("Ticks", function(){
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it ("has 0 ticks when first created", function(){
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var clock = new Clock();
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expect(clock.ticks).to.equal(0);
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clock.dispose();
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});
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it ("increments 1 tick per callback", function(){
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var ticks = 0;
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var clock;
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return Offline(function(){
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clock = new Clock(function(){
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ticks++;
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}, 0.05).start();
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}, 0.6).then(function(){
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expect(ticks).to.equal(clock.ticks);
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});
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});
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it ("resets ticks on stop", function(){
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return Offline(function(){
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var clock = new Clock(function(){}, 20).start(0).stop(0.1);
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return function(time){
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Test.whenBetween(time, 0, 0.09, function(){
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expect(clock.ticks).to.be.greaterThan(0);
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});
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Test.whenBetween(time, 0.1, Infinity, function(){
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expect(clock.ticks).to.equal(0);
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});
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};
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}, 0.2);
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});
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it ("does not reset ticks on pause but stops incrementing", function(){
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return Offline(function(){
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var clock = new Clock(function(){}, 20).start(0).pause(0.1);
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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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expect(clock.ticks).to.be.greaterThan(0);
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pausedTicks = clock.ticks;
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});
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Test.whenBetween(time, 0.1, Infinity, function(){
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expect(clock.ticks).to.equal(pausedTicks);
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});
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};
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}, 0.2);
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});
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it ("starts incrementing where it left off after pause", function(){
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return Offline(function(){
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var clock = new Clock(function(){}, 20).start(0).pause(0.1).start(0.2);
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var pausedTicks = 0;
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var tested = false;
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return function(time){
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Test.whenBetween(time, 0, 0.1, function(){
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expect(clock.ticks).to.be.greaterThan(0);
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pausedTicks = clock.ticks;
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});
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Test.whenBetween(time, 0.1, 0.19, function(){
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expect(clock.ticks).to.equal(pausedTicks);
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});
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Test.whenBetween(time, 0.2, Infinity, function(){
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if (!tested){
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tested = true;
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expect(clock.ticks).to.equal(pausedTicks + 1);
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}
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});
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};
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}, 0.3);
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});
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it ("can start with a tick offset", function(){
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return Offline(function(){
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var tested = false;
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var clock = new Clock(function(){
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if (!tested){
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tested = true;
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expect(clock.ticks).to.equal(4);
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}
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}, 10);
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expect(clock.ticks).to.equal(0);
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clock.start(0, 4);
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});
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});
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});
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context("Events", function(){
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it ("triggers the start event on start", function(){
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return Offline(function(){
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var clock = new Clock(function(){}, 20);
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var startTime = 0.3;
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clock.on("start", function(time, offset){
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expect(time).to.be.closeTo(startTime, 0.05);
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expect(offset).to.equal(0);
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});
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clock.start(startTime);
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}, 0.4);
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});
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it ("triggers the start event with an offset", function(done){
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return Offline(function(){
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var clock = new Clock(function(){}, 20);
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var startTime = 0.3;
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clock.on("start", function(time, offset){
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expect(time).to.be.closeTo(startTime, 0.05);
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expect(offset).to.equal(2);
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clock.dispose();
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done();
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});
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clock.start(startTime, 2);
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}, 0.4);
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});
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it ("triggers stop event", function(){
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return Offline(function(){
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var clock = new Clock(function(){}, 20);
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var stopTime = 0.3;
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clock.on("stop", function(time){
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expect(time).to.be.closeTo(stopTime, 0.05);
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});
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clock.start().stop(stopTime);
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});
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});
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it ("triggers pause stop event", function(){
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return Offline(function(){
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var clock = new Clock(function(){}, 20);
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clock.on("pause", function(time){
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expect(time).to.be.closeTo(0.1, 0.05);
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}).on("stop", function(time){
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expect(time).to.be.closeTo(0.2, 0.05);
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});
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clock.start().pause(0.1).stop(0.2);
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});
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});
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});
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});
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}); |