Tone.js/test/component/CrossFade.js

define(["Tone/component/CrossFade", "helper/Basic", "helper/Offline", "Test", "Tone/signal/Signal"], 
	function (CrossFade, Basic, Offline, Test, Signal) {
		describe("CrossFade", function(){

			Basic(CrossFade);

			context("Fading", function(){

				it("handles input and output connections", function(){
					var comp = new CrossFade();
					Test.connect(comp, 0);
					Test.connect(comp, 1);
					comp.connect(Test);
					comp.dispose();
				});

				it("pass 100% of input 0", function(){
					return Offline(function(){
						var crossFade = new CrossFade();
						var drySignal = new Signal(10);
						var wetSignal = new Signal(20);
						drySignal.connect(crossFade, 0, 0);
						wetSignal.connect(crossFade, 0, 1);
						crossFade.fade.value = 0;
						crossFade.toMaster();
					}).then(function(buffer){
						buffer.forEach(function(sample){
							expect(sample).to.closeTo(10, 0.01);
						});
					});
				});

				it("pass 100% of input 1", function(){
					return Offline(function(){
						var crossFade = new CrossFade();
						var drySignal = new Signal(10);
						var wetSignal = new Signal(20);
						drySignal.connect(crossFade, 0, 0);
						wetSignal.connect(crossFade, 0, 1);
						crossFade.fade.value = 1;
						crossFade.toMaster();
					}).then(function(buffer){
						buffer.forEach(function(sample){
							expect(sample).to.closeTo(20, 0.01);
						});
					});
				});
			
				it("can mix two signals", function(){
					return Offline(function(){
						var crossFade = new CrossFade();
						var drySignal = new Signal(2);
						var wetSignal = new Signal(1);
						drySignal.connect(crossFade, 0, 0);
						wetSignal.connect(crossFade, 0, 1);
						crossFade.fade.value = 0.5;
						crossFade.toMaster();
					}).then(function(buffer){
						buffer.forEach(function(sample){
							expect(sample).to.closeTo(2.12, 0.01);
						});
					});
				});
			});
		});
	});