Tone.js/test/core/Delay.js

define(["Test", "Tone/core/Tone", "Tone/core/Delay", "helper/PassAudio"], function(Test, Tone, Delay, PassAudio) {

	describe("Delay", function(){

		it("can be created and disposed", function(){
			var delay = new Delay();
			delay.dispose();
			Test.wasDisposed(delay);
		});

		it("handles input and output connections", function(){
			var delay = new Delay();
			delay.connect(Test);
			Test.connect(delay);
			Test.connect(delay.delayTime);
			delay.dispose();
		});

		it("can set delay time", function(){
			var delay = new Delay();
			delay.delayTime.value = 0.2;
			expect(delay.delayTime.value).to.be.closeTo(0.2, 0.001);
			delay.dispose();
		});

		it("can be constructed with an options object", function(){
			var delay = new Delay({
				"delayTime" : 0.3,
				"maxDelay" : 2
			});
			expect(delay.delayTime.value).to.be.closeTo(0.3, 0.001);
			expect(delay.maxDelay).to.equal(2);
			delay.dispose();
		});

		it("if the constructor delay time is greater than maxDelay, use that as the maxDelay time", function(){
			var delay = new Delay(3);
			expect(delay.delayTime.value).to.be.closeTo(3, 0.001);
			delay.dispose();
		});

		it("can returns state from 'get' method", function(){
			var delay = new Delay({
				"delayTime" : 0.4,
				"maxDelay" : 2
			});
			var values = delay.get();
			expect(values.delayTime).to.be.closeTo(0.4, 0.001);
			delay.dispose();
		});

		it("accepts Time in constructor", function(){
			var delay = new Delay("4n");
			expect(delay.delayTime.value).to.be.closeTo(delay.toSeconds("4n"), 0.001);
			delay.dispose();
		});

		it("accepts Time in options object", function(){
			var delay = new Delay({
				"delayTime" : "8t"
			});
			expect(delay.delayTime.value).to.be.closeTo(delay.toSeconds("8t"), 0.001);
			delay.dispose();
		});

		it("can set Time", function(){
			var delay = new Delay();
			delay.delayTime.value = "16n";
			expect(delay.delayTime.value).to.be.closeTo(delay.toSeconds("16n"), 0.001);
			delay.dispose();
		});

		it("passes audio through", function(){
			return PassAudio(function(input){
				var delay = new Delay(0).toMaster();
				input.connect(delay);
			});
		});

	});
});