Tone.js/test/component/FFT.js

define(["Tone/component/FFT", "Test", "helper/Basic", "Tone/source/Noise"],
	function (FFT, Test, Basic, Noise) {

	describe("FFT", function(){

		Basic(FFT);

		it("handles input connection", function(){
			var fft = new FFT();
			Test.connect(fft);
			fft.dispose();
		});

		it("can get and set properties", function(){
			var fft = new FFT();
			fft.set({
				"size" : 128
			});
			var values = fft.get();
			expect(values.size).to.equal(128);
			fft.dispose();
		});

		it("can correctly set the size", function(){
			var fft = new FFT(512);
			expect(fft.size).to.equal(512);
			fft.size = 1024;
			expect(fft.size).to.equal(1024);
			fft.dispose();
		});


		it("can run waveform analysis", function(done){
			var noise = new Noise();
			var fft = new FFT(256);
			noise.connect(fft);
			noise.start();

			setTimeout(function(){
				analysis = fft.getValue();
				expect(analysis.length).to.equal(256);
				for (i = 0; i < analysis.length; i++){
					expect(analysis[i]).is.within(-Infinity, 0);
				}
				fft.dispose();
				noise.dispose();
				done()
			}, 300);
		});

	});
});