Tone.js/test/component/Compressor.js

import Compressor from "Tone/component/Compressor";
import Basic from "helper/Basic";
import PassAudio from "helper/PassAudio";
import PassAudioStereo from "helper/PassAudioStereo";
import Test from "helper/Test";
describe("Compressor", function(){

	Basic(Compressor);

	context("Compression", function(){

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

		it("passes the incoming signal through", function(){
			return PassAudio(function(input){
				var comp = new Compressor().toMaster();
				input.connect(comp);
			});
		});

		it("passes the incoming stereo signal through", function(){
			return PassAudioStereo(function(input){
				var comp = new Compressor().toMaster();
				input.connect(comp);
			});
		});

		it("can be get and set through object", function(){
			var comp = new Compressor();
			var values = {
				"ratio" : 12,
				"threshold" : -30,
				"release" : 0.5,
				"attack" : 0.03,
				"knee" : 20
			};
			comp.set(values);
			expect(comp.get()).to.have.keys(["ratio", "threshold", "release", "attack", "ratio"]);
			comp.dispose();
		});

		it("can be get and constructed with an object", function(){
			var comp = new Compressor({
				"ratio" : 12,
				"threshold" : -30,
				"release" : 0.5,
				"attack" : 0.03,
				"knee" : 20
			});
			expect(comp.threshold.value).to.have.be.closeTo(-30, 1);
			comp.dispose();
		});

		it("can get/set all interfaces", function(){
			var comp = new Compressor();
			var values = {
				"ratio" : 12,
				"threshold" : -30,
				"release" : 0.5,
				"attack" : 0.03,
				"knee" : 18
			};
			comp.ratio.value = values.ratio;
			comp.threshold.value = values.threshold;
			comp.release.value = values.release;
			comp.attack.value = values.attack;
			comp.knee.value = values.knee;
			expect(comp.ratio.value).to.equal(values.ratio);
			expect(comp.threshold.value).to.equal(values.threshold);
			expect(comp.release.value).to.equal(values.release);
			expect(comp.attack.value).to.be.closeTo(values.attack, 0.01);
			expect(comp.knee.value).to.equal(values.knee);
			comp.dispose();
		});
	});
});