Tone.js/test/source/UserMedia.js

define(["helper/Basic", "Tone/source/UserMedia", "helper/Test", "Tone/source/Source", "helper/Supports"],
	function(BasicTests, UserMedia, Test, Source, Supports){

		describe("UserMedia", function(){

		//run the common tests
			BasicTests(UserMedia);

			context("Source Tests", function(){

				it("can connect the output", function(){
					var extIn = new UserMedia();
					extIn.connect(Test);
					extIn.dispose();
				});

				it("can be constructed with the input number", function(){
					var extIn = new UserMedia();
					extIn.dispose();
				});

				it("can be constructed with an options object", function(){
					var extIn = new UserMedia({
						"volume" : -10,
						"mute" : false
					});
					expect(extIn.volume.value).to.be.closeTo(-10, 0.1);
					expect(extIn.mute).to.be.false;
					extIn.dispose();
				});

				it("indicates if the browser has UserMedia support", function(){
					expect(UserMedia.supported).to.be.a.boolean;
				});

			});

			//if it is a manual test (i.e. there is a person to 'allow' the microphone)
			if (Supports.GET_USER_MEDIA && UserMedia.supported){

				context("Opening and closing", function(){

				//long timeout to give testers time to allow the microphone
					this.timeout(100000);

					var HAS_USER_MEDIA_INPUTS = false;

					before(function(){
						return UserMedia.enumerateDevices().then(function(devices){
							HAS_USER_MEDIA_INPUTS = devices.length > 0;
						});
					});

					it("open returns a promise", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							var promise = extIn.open();
							expect(promise).to.have.property("then");
							return promise.then(function(){
								extIn.dispose();
							});
						}
					});

					it("can open an input", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							return extIn.open().then(function(){
								extIn.dispose();
							});
						}
					});

					it("can open an input by name", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							var name = null;
							return UserMedia.enumerateDevices().then(function(devices){
								name = devices[0].deviceId;
								return extIn.open(name);
							}).then(function(){
								expect(extIn.deviceId).to.equal(name);
								extIn.dispose();
							});
						}
					});

					it("can open an input by index", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							return extIn.open(0).then(function(){
								extIn.dispose();
							});
						}
					});

					it("throws an error if it cant find the device name", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							return extIn.open("doesn't exist").then(function(){
							//shouldn't call 'then'
								throw new Error("shouldnt call 'then'");
							}).catch(function(){
								extIn.dispose();
							});
						}
					});

					it("is 'started' after media is open and 'stopped' otherwise", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							expect(extIn.state).to.equal("stopped");
							return extIn.open().then(function(){
								expect(extIn.state).to.equal("started");
								extIn.dispose();
							});
						}
					});

					it("has a label, group and device id when open", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							return extIn.open().then(function(){
								expect(extIn.deviceId).to.be.a("string");
								expect(extIn.groupId).to.be.a("string");
								expect(extIn.label).to.be.a("string");
								extIn.dispose();
							});
						}
					});

					it("can close an input", function(){
						if (HAS_USER_MEDIA_INPUTS){
							var extIn = new UserMedia();
							return extIn.open().then(function(){
								extIn.close();
								extIn.dispose();
							});
						}
					});

					it("can enumerate devices", function(){
						return UserMedia.enumerateDevices().then(function(devices){
							expect(devices).to.be.instanceOf(Array);
						});
					});
				});
			}

		});
	});