import DuoSynth from "Tone/instrument/DuoSynth";
import Basic from "helper/Basic";
import InstrumentTest from "helper/InstrumentTests";
import CompareToFile from "helper/CompareToFile";
import Supports from "helper/Supports";

describe("DuoSynth", function(){

	Basic(DuoSynth);
	InstrumentTest(DuoSynth, "C4", {
		voice0 : {
			oscillator : {
				type : "square"
			},
			envelope : {
				decay : 0.1,
				sustain : 0.5,
				release : 0.2
			}
		},
		voice1 : {
			oscillator : {
				type : "square"
			},
			envelope : {
				decay : 0.1,
				sustain : 0.5,
				release : 0.2
			}
		}
	});

	if (Supports.CHROME_AUDIO_RENDERING){
		it("matches a file", function(){
			return CompareToFile(function(){
				var synth = new DuoSynth().toMaster();
				synth.triggerAttackRelease("C5", 0.1, 0.1);
			}, "duoSynth.wav", 0.01);
		});
	}

	context("API", function(){

		it("can get and set voice0 attributes", function(){
			var duoSynth = new DuoSynth();
			duoSynth.voice0.oscillator.type = "triangle";
			expect(duoSynth.voice0.oscillator.type).to.equal("triangle");
			duoSynth.dispose();
		});

		it("can get and set voice1 attributes", function(){
			var duoSynth = new DuoSynth();
			duoSynth.voice1.envelope.attack = 0.24;
			expect(duoSynth.voice1.envelope.attack).to.equal(0.24);
			duoSynth.dispose();
		});

		it("can get and set harmonicity", function(){
			var duoSynth = new DuoSynth();
			duoSynth.harmonicity.value = 2;
			expect(duoSynth.harmonicity.value).to.equal(2);
			duoSynth.dispose();
		});

		it("can get and set vibratoRate", function(){
			var duoSynth = new DuoSynth();
			duoSynth.vibratoRate.value = 2;
			expect(duoSynth.vibratoRate.value).to.equal(2);
			duoSynth.dispose();
		});

		it("can be constructed with an options object", function(){
			var duoSynth = new DuoSynth({
				"voice0" : {
					"filter" : {
						"rolloff" : -24
					}
				}
			});
			expect(duoSynth.voice0.filter.rolloff).to.equal(-24);
			duoSynth.dispose();
		});

		it("can get/set attributes", function(){
			var duoSynth = new DuoSynth();
			duoSynth.set({
				"harmonicity" : 1.5
			});
			expect(duoSynth.get().harmonicity).to.equal(1.5);
			duoSynth.dispose();
		});

	});
});