import AutoPanner from "Tone/effect/AutoPanner";
import Basic from "helper/Basic";
import EffectTests from "helper/EffectTests";
import Offline from "helper/Offline";

describe("AutoPanner", function(){
	Basic(AutoPanner);
	EffectTests(AutoPanner);

	context("API", function(){

		it("can pass in options in the constructor", function(){
			var autoPanner = new AutoPanner({
				"type" : "sawtooth",
				"depth" : 0.2
			});
			expect(autoPanner.depth.value).to.be.closeTo(0.2, 0.01);
			expect(autoPanner.type).to.equal("sawtooth");
			autoPanner.dispose();
		});

		it("can be started and stopped", function(){
			var autoPanner = new AutoPanner();
			autoPanner.start().stop("+0.2");
			autoPanner.dispose();
		});

		it("can get/set the options", function(){
			var autoPanner = new AutoPanner();
			autoPanner.set({
				"frequency" : 2.4,
				"type" : "triangle"
			});
			expect(autoPanner.get().frequency).to.be.closeTo(2.4, 0.01);
			expect(autoPanner.get().type).to.equal("triangle");
			autoPanner.dispose();
		});

		it("can set the frequency and depth", function(){
			var autoPanner = new AutoPanner();
			autoPanner.depth.value = 0.4;
			autoPanner.frequency.value = 0.4;
			expect(autoPanner.depth.value).to.be.closeTo(0.4, 0.01);
			expect(autoPanner.frequency.value).to.be.closeTo(0.4, 0.01);
			autoPanner.dispose();
		});

		it("can sync the frequency to the Transport", function(){
			return Offline(function(Transport){
				var panner = new AutoPanner(2);
				panner.sync();
				panner.frequency.toMaster();
				Transport.bpm.setValueAtTime(Transport.bpm.value * 2, 0.05);
				// Transport.start(0)
			}, 0.1).then(function(buffer){
				expect(buffer.getValueAtTime(0)).to.be.closeTo(2, 0.1);
				expect(buffer.getValueAtTime(0.05)).to.be.closeTo(4, 0.1);
			});
		});

		it("can unsync the frequency to the Transport", function(){
			return Offline(function(Transport){
				var panner = new AutoPanner(2);
				panner.sync();
				panner.frequency.toMaster();
				Transport.bpm.setValueAtTime(Transport.bpm.value * 2, 0.05);
				panner.unsync();
				// Transport.start(0)
			}, 0.1).then(function(buffer){
				expect(buffer.getValueAtTime(0)).to.be.closeTo(2, 0.1);
				expect(buffer.getValueAtTime(0.05)).to.be.closeTo(2, 0.1);
			});
		});
	});
});