Tone.js/test/helper/OscillatorTests.js

define(["helper/OutputAudio", "Tone/source/Oscillator", "helper/Offline", "helper/Test", "Tone/core/Tone"],
	function(OutputAudio, Oscillator, Offline, Test, Tone){

		return function(Constr, args){

			context("Oscillator Tests", function(){

				it("can be created with an options object", function(){
					var instance = new Constr({
						"frequency" : 200,
						"detune" : -20
					});
					expect(instance.frequency.value).to.equal(200);
					expect(instance.detune.value).to.equal(-20);
					instance.dispose();
				});

				it("can set/set the frequency", function(){
					var instance = new Constr(args);
					instance.frequency.value = 110;
					expect(instance.frequency.value).to.equal(110);
					instance.start();
					instance.frequency.value = 220;
					expect(instance.frequency.value).to.equal(220);
					instance.dispose();
				});

				it("can set/set the detune", function(){
					var instance = new Constr(args);
					instance.detune.value = -50;
					expect(instance.detune.value).to.equal(-50);
					instance.start();
					instance.detune.value = 92;
					expect(instance.detune.value).to.equal(92);
					instance.dispose();
				});

				it("can connect to detune and frequency", function(){
					var instance = new Constr(args);
					Test.connect(instance.frequency);
					Test.connect(instance.detune);
					instance.dispose();
				});

				it("can get/set the phase", function(){
					var osc = new Constr({
						"phase" : 180,
					});
					expect(osc.phase).to.be.closeTo(180, 0.001);
					osc.phase = 270;
					expect(osc.phase).to.be.closeTo(270, 0.001);
					osc.dispose();
				});

				it("has a restart method", function(){
					var osc = new Constr();
					expect(osc.restart).to.exist;
					expect(osc.restart).is.not.equal(Tone.noOp);
					osc.dispose();
				});

				it("does not clip in volume", function(){
					return Offline(function(){
						new Constr(args).toMaster().start(0);
					}).then(function(buffer){
						expect(buffer.max()).to.be.at.most(1);
					});
				});

			});

		};
	});