define(["helper/ConstantOutput", "helper/Basic", "Tone/signal/GreaterThanZero", "Tone/signal/Signal"],
	function (ConstantOutput, Basic, GreaterThanZero, Signal) {

		describe("GreaterThanZero", function(){

			Basic(GreaterThanZero);

			describe("Comparison", function(){

				it("Outputs 0 when the value is less than 0", function(){
					return ConstantOutput(function(){
						var signal = new Signal(-1);
						var gtz = new GreaterThanZero();
						signal.connect(gtz);
						gtz.toMaster();
					}, 0);
				});

				it("Outputs 1 when the value is greater than 0", function(){
					return ConstantOutput(function(){
						var signal = new Signal(1);
						var gtz = new GreaterThanZero();
						signal.connect(gtz);
						gtz.toMaster();
					}, 1);
				});

				it("Outputs 0 when the value is equal to 0", function(){
					return ConstantOutput(function(){
						var signal = new Signal(0);
						var gtz = new GreaterThanZero();
						signal.connect(gtz);
						gtz.toMaster();
					}, 0);
				});

				it("Outputs 1 when the value is slightly above 0", function(){
					return ConstantOutput(function(){
						var signal = new Signal(0.001);
						var gtz = new GreaterThanZero();
						signal.connect(gtz);
						gtz.toMaster();
					}, 1);
				});
			});
		});
	});