mirror of
https://github.com/Tonejs/Tone.js
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92 lines
No EOL
2.3 KiB
JavaScript
92 lines
No EOL
2.3 KiB
JavaScript
define(["helper/Offline", "Tone/signal/Scale", "helper/Basic",
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"Test", "Tone/source/Oscillator", "Tone/signal/Signal"],
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function (Offline, Scale, Basic, Test, Oscillator, Signal) {
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describe("Scale", function(){
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Basic(Scale);
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context("Scaling", function(){
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it("handles input and output connections", function(){
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var scale = new Scale(0, 100);
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Test.connect(scale);
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scale.connect(Test);
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scale.dispose();
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});
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it("can set the min and max values", function(){
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var scale = new Scale(0, 100);
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scale.min = -0.01;
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expect(scale.min).to.be.closeTo(-0.01, 0.001);
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scale.max = 1000;
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expect(scale.max).to.be.closeTo(1000, 0.001);
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scale.dispose();
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});
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it("scales to the min when the input is 0", function(done){
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//make an signalillator to drive the signal
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var signal, scale;
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var offline = new Offline();
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offline.before(function(dest){
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signal = new Signal(0);
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scale = new Scale(-10, 8);
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signal.connect(scale);
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scale.connect(dest);
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});
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offline.test(function(sample){
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expect(sample).to.be.closeTo(-10, 0.001);
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});
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offline.after(function(){
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signal.dispose();
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scale.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("scales to the max when the input is 1", function(done){
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//make an signalillator to drive the signal
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var signal, scale;
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var offline = new Offline();
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offline.before(function(dest){
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signal = new Signal(1);
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scale = new Scale(-10, 0);
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scale.max = 8;
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signal.connect(scale);
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scale.connect(dest);
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});
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offline.test(function(sample){
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expect(sample).to.be.closeTo(8, 0.001);
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});
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offline.after(function(){
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signal.dispose();
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scale.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("scales an input of 0.5 to 15 (10, 20)", function(done){
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//make an signalillator to drive the signal
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var signal, scale;
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var offline = new Offline();
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offline.before(function(dest){
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signal = new Signal(0.5);
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scale = new Scale(10, 20);
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signal.connect(scale);
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scale.connect(dest);
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});
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offline.test(function(sample){
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expect(sample).to.be.closeTo(15, 0.001);
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});
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offline.after(function(){
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signal.dispose();
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scale.dispose();
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done();
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});
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offline.run();
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});
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});
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});
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}); |