mirror of
https://github.com/Tonejs/Tone.js
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350 lines
No EOL
9.4 KiB
JavaScript
350 lines
No EOL
9.4 KiB
JavaScript
define(["Tone/component/Envelope", "helper/Basic", "helper/Offline", "Test"],
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function (Envelope, Basic, Offline, Test) {
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describe("Envelope", function(){
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Basic(Envelope);
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context("Envelope", function(){
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it("has an output connections", function(){
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var env = new Envelope();
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env.connect(Test);
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env.dispose();
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});
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it ("can get and set values an Objects", function(){
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var env = new Envelope();
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var values = {
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"attack" : 0,
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"decay" : 0.5,
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"sustain" : 1,
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"release" : "4n"
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};
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env.set(values);
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expect(env.get()).to.contain.keys(Object.keys(values));
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env.dispose();
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});
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it ("passes no signal before being triggered", function(done){
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var env;
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var offline = new Offline(0.1);
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offline.before(function(dest){
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env = new Envelope().connect(dest);
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});
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offline.test(function(sample){
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expect(sample).to.be.closeTo(0, 0.001);
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("passes signal once triggered", function(done){
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var env;
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var offline = new Offline(0.2);
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offline.before(function(dest){
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env = new Envelope().connect(dest);
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env.triggerAttack(0.1);
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});
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offline.test(function(sample, time){
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if (time <= 0.1){
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expect(sample).to.be.closeTo(0, 0.001);
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} else {
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expect(sample).to.be.above(0);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("can take parameters as both an object and as arguments", function(){
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var env0 = new Envelope({
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"attack" : 0,
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"decay" : 0.5,
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"sustain" : 1
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});
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expect(env0.attack).to.equal(0);
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expect(env0.decay).to.equal(0.5);
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expect(env0.sustain).to.equal(1);
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env0.dispose();
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var env1 = new Envelope(0.1, 0.2, 0.3);
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expect(env1.attack).to.equal(0.1);
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expect(env1.decay).to.equal(0.2);
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expect(env1.sustain).to.equal(0.3);
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env1.dispose();
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});
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it("can set attack to exponential or linear", function(){
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var env = new Envelope(0.01, 0.01, 0.5, 0.3);
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env.attackCurve = "exponential";
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expect(env.attackCurve).to.equal("exponential");
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env.triggerAttack();
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env.dispose();
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//and can be linear
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var env2 = new Envelope(0.01, 0.01, 0.5, 0.3);
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env2.attackCurve = "linear";
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expect(env2.attackCurve).to.equal("linear");
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env2.triggerAttack();
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//and test a non-curve
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expect(function(){
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env2.attackCurve = "other";
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}).to.throw(Error);
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env2.dispose();
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});
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it("can set release to exponential or linear", function(){
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var env = new Envelope(0.01, 0.01, 0.5, 0.3);
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env.releaseCurve = "exponential";
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expect(env.releaseCurve).to.equal("exponential");
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env.triggerRelease();
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env.dispose();
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//and can be linear
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var env2 = new Envelope(0.01, 0.01, 0.5, 0.3);
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env2.releaseCurve = "linear";
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expect(env2.releaseCurve).to.equal("linear");
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env2.triggerRelease();
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//and test a non-curve
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expect(function(){
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env2.releaseCurve = "other";
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}).to.throw(Error);
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env2.dispose();
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});
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it ("correctly schedules an exponential attack", function(done){
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var env;
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var offline = new Offline(0.7);
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offline.before(function(dest){
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env = new Envelope(0.01, 0.4, 0.5, 0.1);
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env.attackCurve = "exponential";
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env.connect(dest);
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env.triggerAttack(0);
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});
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offline.test(function(sample, time){
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if (time < env.attack){
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expect(sample).to.be.within(0, 1);
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} else if (time < env.attack + env.decay){
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expect(sample).to.be.within(env.sustain, 1);
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} else {
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expect(sample).to.be.closeTo(env.sustain, 0.01);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("correctly schedules an exponential attack", function(done){
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var env;
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var offline = new Offline(0.7);
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offline.before(function(dest){
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env = new Envelope(0.3, 0.001, 0.5, 0.1);
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env.attackCurve = "exponential";
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env.connect(dest);
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env.triggerAttack(0);
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});
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offline.test(function(sample, time){
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if (time < env.attack){
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expect(sample).to.be.within(0, 1);
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} else if (time < env.attack + env.decay){
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expect(sample).to.be.within(env.sustain, 1);
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} else {
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expect(sample).to.be.closeTo(env.sustain, 0.01);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("can schedule a very short attack", function(done){
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var env;
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var offline = new Offline(0.2);
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offline.before(function(dest){
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env = new Envelope(0.001, 0.001, 0);
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env.connect(dest);
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env.triggerAttack(0);
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});
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offline.test(function(sample, time){
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if (time < env.attack){
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expect(sample).to.be.within(0, 1);
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} else if (time < env.attack + env.decay){
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expect(sample).to.be.within(0, 1);
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} else {
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expect(sample).to.be.below(0.02);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("correctly schedule a release", function(done){
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var releaseTime = 0.2;
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var env;
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var offline = new Offline(0.7);
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offline.before(function(dest){
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env = new Envelope(0.001, 0.001, 0.5, 0.3);
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env.connect(dest);
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env.triggerAttack(0);
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env.triggerRelease(releaseTime);
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});
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offline.test(function(sample, time){
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if (time > env.attack + env.decay && time < env.attack + env.decay + releaseTime){
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expect(sample).to.be.below(env.sustain + 0.01);
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} else if (time > 0.5){
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//silent
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expect(sample).to.be.below(0.01);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("correctly schedule an attack release envelope", function(done){
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var env;
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var releaseTime = 0.4;
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var offline = new Offline(0.8);
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offline.before(function(dest){
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env = new Envelope(0.08, 0.2, 0.1, 0.2);
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env.connect(dest);
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env.triggerAttack(0);
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env.triggerRelease(releaseTime);
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});
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offline.test(function(sample, time){
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if (time < env.attack){
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expect(sample).to.be.within(0, 1);
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} else if (time < env.attack + env.decay){
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expect(sample).to.be.within(env.sustain, 1);
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} else if (time < releaseTime){
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expect(sample).to.be.closeTo(env.sustain, 0.1);
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} else if (time < releaseTime + env.release){
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expect(sample).to.be.within(0, env.sustain + 0.01);
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} else {
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//silent
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expect(sample).to.be.below(0.01);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("can schedule a combined AttackRelease", function(done){
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var env;
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var duration = 0.4;
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var offline = new Offline(0.7);
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offline.before(function(dest){
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env = new Envelope(0.1, 0.2, 0.35, 0.1);
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env.connect(dest);
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env.triggerAttackRelease(duration, 0);
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});
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offline.test(function(sample, time){
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if (time < env.attack){
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expect(sample).to.be.within(0, 1);
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} else if (time < env.attack + env.decay){
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expect(sample).to.be.within(env.sustain - 0.001, 1);
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} else if (time < duration){
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expect(sample).to.be.closeTo(env.sustain, 0.1);
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} else if (time < duration + env.release){
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expect(sample).to.be.within(0, env.sustain + 0.01);
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} else {
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expect(sample).to.be.below(0.01);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("can schedule a combined AttackRelease with velocity", function(done){
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var env;
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var duration = 0.4;
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var velocity = 0.4;
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var offline = new Offline(0.8);
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offline.before(function(dest){
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env = new Envelope(0.1, 0.2, 0.35, 0.1);
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env.connect(dest);
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env.triggerAttackRelease(duration, 0, velocity);
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});
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offline.test(function(sample, time){
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if (time < env.attack){
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expect(sample).to.be.within(0, velocity + 0.01);
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} else if (time < env.attack + env.decay){
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expect(sample).to.be.within(env.sustain * velocity, velocity + 0.01);
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} else if (time < duration){
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expect(sample).to.be.closeTo(env.sustain * velocity, 0.1);
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} else if (time < duration + env.release){
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expect(sample).to.be.within(0, env.sustain * velocity + 0.01);
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} else {
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expect(sample).to.be.below(0.01);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("can schedule multiple envelopes", function(done){
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var env;
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var offline = new Offline(1);
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offline.before(function(dest){
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env = new Envelope(0.1, 0.2, 0);
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env.connect(dest);
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env.triggerAttack(0);
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env.triggerAttack(0.5);
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});
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offline.test(function(sample, time){
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if (time > 0 && time < 0.3){
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expect(sample).to.be.above(0);
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} else if (time <= 0.5){
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expect(sample).to.be.below(0.02);
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} else if (time <= 0.8){
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expect(sample).to.be.above(0);
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} else {
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expect(sample).to.be.below(0.02);
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}
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});
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offline.after(function(){
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env.dispose();
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done();
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});
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offline.run();
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});
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it ("reports its current envelope value (.value)", function(done){
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var env = new Envelope(0.1, 0.2, 1).noGC();
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expect(env.value).to.be.closeTo(0, 0.01);
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env.triggerAttack();
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setTimeout(function(){
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expect(env.value).to.be.closeTo(1, 0.01);
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env.dispose();
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done();
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}, 200);
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});
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});
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});
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}); |