mirror of
https://github.com/Tonejs/Tone.js
synced 2024-12-29 04:53:10 +00:00
805 lines
20 KiB
JavaScript
805 lines
20 KiB
JavaScript
import Basic from "helper/Basic";
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import Part from "Tone/event/Part";
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import Tone from "Tone/core/Tone";
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import Transport from "Tone/core/Transport";
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import Event from "Tone/event/Event";
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import Offline from "helper/Offline";
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import Test from "helper/Test";
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import Time from "Tone/type/Time";
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describe("Part", function(){
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Basic(Part);
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context("Constructor", function(){
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it("takes a callback and an array of values", function(){
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return Offline(function(){
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var callback = function(){};
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var part = new Part(callback, [0, 1, 2]);
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expect(part.callback).to.equal(callback);
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expect(part.length).to.equal(3);
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part.dispose();
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});
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});
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it("can be constructed with no arguments", function(){
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return Offline(function(){
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var part = new Part();
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expect(part.length).to.equal(0);
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part.dispose();
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});
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});
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it("can pass in arguments in options object", function(){
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return Offline(function(){
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var callback = function(){};
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var part = new Part({
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"callback" : callback,
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"humanize" : true,
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"events" : [0, 1, 2],
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"loop" : true,
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"loopEnd" : "4n",
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"probability" : 0.3
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});
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expect(part.callback).to.equal(callback);
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expect(part.length).to.equal(3);
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expect(part.loop).to.be.true;
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expect(part.loopEnd).to.equal(Time("4n").valueOf());
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expect(part.probability).to.equal(0.3);
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expect(part.humanize).to.be.true;
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part.dispose();
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});
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});
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});
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context("Adding / Removing / Getting Events", function(){
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it("can take events in the constructor as an array of times", function(){
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return Offline(function(){
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var part = new Part(function(){}, ["0", "8n", "4n"]);
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expect(part.length).to.equal(3);
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part.dispose();
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});
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});
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it("can take events in the constructor as an array of times and values", function(){
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return Offline(function(){
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var part = new Part(function(){}, [["0", "C4"], ["8n", "D3"], ["4n", "E4"]]);
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expect(part.length).to.equal(3);
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part.dispose();
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});
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});
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it("can retrieve an event using 'at'", function(){
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return Offline(function(){
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var part = new Part(function(){}, [["0", 0], ["8n", "C2"], ["4n", 2]]);
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expect(part.length).to.equal(3);
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expect(part.at(0)).to.be.instanceof(Event);
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expect(part.at(0).value).to.equal(0);
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expect(part.at("8n").value).to.equal("C2");
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expect(part.at("4n").value).to.equal(2);
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expect(part.at("2n")).to.be.null;
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part.dispose();
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});
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});
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it("can set the value of an existing event with 'at'", function(){
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return Offline(function(){
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var part = new Part({
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"events" : [[0, "C3"]]
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});
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expect(part.length).to.equal(1);
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expect(part.at(0).value).to.equal("C3");
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part.at(0, "C4");
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expect(part.at(0).value).to.equal("C4");
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part.dispose();
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});
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});
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it("can take events in the constructor as an array of objects", function(){
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return Offline(function(){
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var part = new Part(function(){}, [{
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"time" : 0.3,
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"note" : "C3"
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},
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{
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"time" : 1,
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"note" : "D3"
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}]);
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expect(part.length).to.equal(2);
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expect(part.at(0.3).value).to.be.object;
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expect(part.at(0.3).value.note).to.equal("C3");
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part.dispose();
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});
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});
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it("can cancel event changes", function(){
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var count = 0;
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return Offline(function(Transport){
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var part = new Part(function(time){
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count++;
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}, [{
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"time" : 0,
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"note" : "C3"
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},
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{
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"time" : 0.2,
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"note" : "D3"
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}]).start(0).stop(0.1);
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part.cancel(0.1);
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Transport.start(0);
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}, 0.3).then(function(){
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expect(count).to.equal(2);
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});
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});
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it("can add an event as a time and value", function(){
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return Offline(function(){
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var part = new Part();
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expect(part.length).to.equal(0);
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part.add(1, "D3");
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expect(part.length).to.equal(1);
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expect(part.at(1).value).to.equal("D3");
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part.dispose();
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});
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});
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it("can add an event as an object", function(){
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return Offline(function(){
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var part = new Part();
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expect(part.length).to.equal(0);
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part.add({
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"time" : 0.5,
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"note" : "D4",
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"duration" : "8n"
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});
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expect(part.length).to.equal(1);
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expect(part.at(0.5).value).to.be.object;
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expect(part.at(0.5).value.duration).to.deep.equal("8n");
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expect(part.at(0.5).value.note).to.deep.equal("D4");
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part.dispose();
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});
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});
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it("can add another part", function(){
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return Offline(function(){
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var part = new Part();
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expect(part.length).to.equal(0);
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var subPart = new Part({
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"events" : [0, 0.5]
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});
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part.add(0.2, subPart);
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expect(part.length).to.equal(1);
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expect(part.at(0.2)).to.equal(subPart);
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part.dispose();
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});
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});
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it("can remove an event by time", function(){
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return Offline(function(){
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var part = new Part({
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"events" : [[0.2, "C3"], [0.2, "C4"]]
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});
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expect(part.length).to.equal(2);
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part.remove(0.2);
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expect(part.length).to.equal(0);
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part.dispose();
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});
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});
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it("can remove an event by time and value", function(){
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return Offline(function(){
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var secondEvent = {
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time : 0.2,
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note : "C4"
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};
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var part = new Part({
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"events" : [[0.2, "C2"], secondEvent]
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});
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expect(part.length).to.equal(2);
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part.remove(0.2, "C2");
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expect(part.length).to.equal(1);
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part.remove(secondEvent);
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expect(part.length).to.equal(0);
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part.dispose();
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});
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});
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it("added events have the same settings as the parent", function(){
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return Offline(function(){
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var part = new Part({
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"loopEnd" : "1m",
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"loopStart" : "4n",
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"probability" : 0.2,
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"events" : [[0.2, "C3"], [0.3, "C4"]]
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});
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part.humanize = 0.1;
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var firstEvent = part.at(0.2);
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expect(firstEvent.humanize).to.equal(0.1);
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expect(firstEvent.probability).to.equal(0.2);
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//loop duration is the same
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expect(firstEvent.loopEnd).to.equal(Time("1m").valueOf());
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expect(firstEvent.loopStart).to.equal(Time("4n").valueOf());
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var secondEvent = part.at(0.3);
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expect(secondEvent.humanize).to.equal(0.1);
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expect(secondEvent.probability).to.equal(0.2);
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//loop duration is the same
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expect(secondEvent.loopEnd).to.equal(Time("1m").valueOf());
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expect(secondEvent.loopStart).to.equal(Time("4n").valueOf());
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part.dispose();
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});
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});
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it("will create an event using at if one wasn't there at that time", function(){
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return Offline(function(){
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var part = new Part();
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expect(part.length).to.equal(0);
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expect(part.at(0.1, "C4").value).to.equal("C4");
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expect(part.length).to.equal(1);
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part.dispose();
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});
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});
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it("can remove all of the events", function(){
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return Offline(function(){
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var part = new Part(function(){}, [0, 1, 2, 3, 4, 5]);
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expect(part.length).to.equal(6);
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part.removeAll();
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expect(part.length).to.equal(0);
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part.dispose();
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});
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});
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});
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context("Part callback", function(){
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it("does not invoke get invoked until started", function(){
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return Offline(function(Transport){
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new Part(function(){
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throw new Error("shouldn't call this callback");
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}, [0, 0.4]);
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Transport.start();
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}, 0.5);
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});
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it("is invoked after it's started", function(){
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var invokations = 0;
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return Offline(function(Transport){
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new Part(function(){
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invokations++;
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}, [0, 0.1]).start(0);
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Transport.start();
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}, 0.2).then(function(){
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expect(invokations).to.equal(2);
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});
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});
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it("passes in the scheduled time to the callback", function(){
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var invoked = false;
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return Offline(function(Transport){
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var startTime = 0.1;
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var part = new Part(function(time){
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expect(time).to.be.a.number;
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expect(time - startTime).to.be.closeTo(0.5, 0.01);
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invoked = true;
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}, [0.3]);
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part.start(0.2);
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Transport.start(startTime);
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}, 0.62).then(function(){
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expect(invoked).to.be.true;
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});
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});
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it("passes in the value to the callback", function(){
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var invoked = false;
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return Offline(function(Transport){
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var part = new Part(function(time, thing){
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expect(time).to.be.a.number;
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expect(thing).to.equal("thing");
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part.dispose();
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invoked = true;
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}, [[0, "thing"]]).start();
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Transport.start();
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}, 0.6).then(function(){
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expect(invoked).to.be.true;
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});
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});
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it("can mute the callback", function(){
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return Offline(function(){
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var part = new Part(function(){
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throw new Error("shouldn't call this callback");
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}, [0, 0.1, 0.2, 0.3]).start();
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part.mute = true;
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expect(part.mute).to.be.true;
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Transport.start();
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}, 0.5);
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});
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it("can trigger with some probability", function(){
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return Offline(function(){
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var part = new Part(function(){
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throw new Error("shouldn't call this callback");
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}, [0, 0.1, 0.2, 0.3]).start();
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part.probability = 0;
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expect(part.probability).to.equal(0);
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Transport.start();
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}, 0.4);
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});
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it("invokes all of the scheduled events", function(){
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var count = 0;
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return Offline(function(Transport){
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new Part(function(){
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count++;
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}, [0, 0.1, 0.2, 0.3]).start();
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Transport.start();
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}, 0.4).then(function(){
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expect(count).to.equal(4);
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});
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});
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it("invokes all of the scheduled events at the correct times", function(){
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var count = 0;
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return Offline(function(Transport){
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var now = Transport.now() + 0.1;
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new Part(function(time, value){
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count++;
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expect(time - now).to.be.closeTo(value, 0.01);
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}, [[0, 0], [0.1, 0.1], [0.2, 0.2]]).start();
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Transport.start(now);
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}, 0.4).then(function(){
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expect(count).to.equal(3);
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});
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});
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it("starts an event added after the part was started", function(){
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var invoked = false;
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return Offline(function(Transport){
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var part = new Part({
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"loopEnd" : 0.2,
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"loop" : true,
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"callback" : function(time, value){
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if (value === 1){
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invoked = true;
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}
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},
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"events" : [[0, 0]]
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}).start(0);
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Transport.start();
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return Test.atTime(0.1, function(){
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part.add(0.1, 1);
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});
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}, 0.6).then(function(){
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expect(invoked).to.be.true;
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});
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});
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it("can schedule a subpart", function(){
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var invokations = 0;
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return Offline(function(Transport){
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var startTime = 0.1;
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var subPart = new Part({
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"events" : [[0, 1], [0.3, 2]]
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});
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var part = new Part(function(time, value){
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invokations++;
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if (value === 0){
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expect(time - startTime).to.be.closeTo(0, 0.01);
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} else if (value === 1){
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expect(time - startTime).to.be.closeTo(0.2, 0.01);
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} else if (value === 2){
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expect(time - startTime).to.be.closeTo(0.5, 0.01);
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part.dispose();
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}
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}).add(0.2, subPart).add(0, 0).start(0);
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Transport.start(startTime);
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}, 0.7).then(function(){
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expect(invokations).to.equal(3);
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});
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});
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it("can start with an offset", function(){
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var invoked = false;
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return Offline(function(Transport){
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var startTime = 0.1;
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var part = new Part(function(time, number){
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expect(time - startTime).to.be.closeTo(0.1, 0.01);
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expect(number).to.equal(1);
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invoked = true;
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}, [[0, 0], [1, 1]]).start(0, 0.9);
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Transport.start(startTime);
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}, 0.3).then(function(){
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expect(invoked).to.be.true;
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});
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});
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});
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context("Looping", function(){
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it("can be set using a boolean as an argument when created", function(){
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var callCount = 0;
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return Offline(function(Transport){
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new Part({
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"loopEnd" : 0.2,
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"loop" : true,
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"callback" : function(){
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callCount++;
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},
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"events" : [[0, 1], [0.1, 2]]
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}).start(0);
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Transport.start();
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}, 0.55).then(function(){
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expect(callCount).to.equal(6);
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});
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});
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it("can be toggled off using a boolean", function(){
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var callCount = 0;
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return Offline(function(Transport){
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var part = new Part({
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"loopEnd" : 0.2,
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"loop" : true,
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"callback" : function(){
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callCount++;
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},
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"events" : [[0, 1], [0.1, 2]]
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}).start(0);
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part.loop = false;
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Transport.start();
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}, 0.55).then(function(){
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expect(callCount).to.equal(2);
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});
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});
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it("can be toggled on using a boolean", function(){
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var callCount = 0;
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return Offline(function(Transport){
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var part = new Part({
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"loopEnd" : 0.2,
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"loop" : false,
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"callback" : function(){
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callCount++;
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},
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"events" : [[0, 1], [0.1, 2]]
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}).start(0);
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part.loop = true;
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Transport.start();
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}, 0.55).then(function(){
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expect(callCount).to.equal(6);
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});
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});
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it("can be set to loop at a specific interval", function(){
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var invoked = false;
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return Offline(function(Transport){
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var lastCall;
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var part = new Part({
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"loopEnd" : 0.25,
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"loop" : true,
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"callback" : function(time){
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if (lastCall){
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invoked = true;
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expect(time - lastCall).to.be.closeTo(0.25, 0.01);
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}
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lastCall = time;
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},
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"events" : [0]
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}).start(0);
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Transport.start();
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}, 0.7).then(function(){
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expect(invoked).to.be.true;
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});
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});
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it("a started part will be stopped if it is after the loopEnd", function(){
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var invoked = true;
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return Offline(function(Transport){
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var switched = false;
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var part = new Part({
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"loopEnd" : 0.5,
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"loop" : true,
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"callback" : function(time, value){
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if (value === 1 && !switched){
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switched = true;
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part.loopEnd = 0.2;
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} else if (switched){
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expect(value).to.equal(0);
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invoked = true;
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}
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},
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"events" : [[0, 0], [0.25, 1]]
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}).start(0);
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Transport.start();
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}, 0.7).then(function(){
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expect(invoked).to.be.true;
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});
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});
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it("a started part will be stopped if it is before the loopStart", function(){
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var invoked = false;
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return Offline(function(Transport){
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var switched = false;
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var part = new Part({
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"loopEnd" : 0.5,
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"loop" : true,
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"callback" : function(time, value){
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if (value === 1 && !switched){
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switched = true;
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part.loopStart = 0.2;
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} else if (switched){
|
|
expect(value).to.equal(1);
|
|
invoked = true;
|
|
}
|
|
},
|
|
"events" : [[0, 0], [0.25, 1]]
|
|
}).start(0);
|
|
Transport.start();
|
|
}, 0.7).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it("can loop a specific number of times", function(){
|
|
var callCount = 0;
|
|
return Offline(function(Transport){
|
|
new Part({
|
|
"loopEnd" : 0.125,
|
|
"loop" : 3,
|
|
"callback" : function(){
|
|
callCount++;
|
|
},
|
|
"events" : [0, 0.1]
|
|
}).start(0.1);
|
|
Transport.start();
|
|
}, 0.8).then(function(){
|
|
expect(callCount).to.equal(6);
|
|
});
|
|
});
|
|
|
|
it("plays once when loop is 1", function(){
|
|
var callCount = 0;
|
|
return Offline(function(Transport){
|
|
new Part({
|
|
"loopEnd" : 0.125,
|
|
"loop" : 1,
|
|
"callback" : function(){
|
|
callCount++;
|
|
},
|
|
"events" : [0, 0.1]
|
|
}).start(0.1);
|
|
Transport.start();
|
|
}, 0.8).then(function(){
|
|
expect(callCount).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it("plays once when loop is 0", function(){
|
|
var callCount = 0;
|
|
return Offline(function(Transport){
|
|
new Part({
|
|
"loopEnd" : 0.125,
|
|
"loop" : 0,
|
|
"callback" : function(){
|
|
callCount++;
|
|
},
|
|
"events" : [0, 0.1]
|
|
}).start(0.1);
|
|
Transport.start();
|
|
}, 0.8).then(function(){
|
|
expect(callCount).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it("plays once when loop is false", function(){
|
|
var callCount = 0;
|
|
return Offline(function(Transport){
|
|
new Part({
|
|
"loopEnd" : 0.125,
|
|
"loop" : false,
|
|
"callback" : function(){
|
|
callCount++;
|
|
},
|
|
"events" : [0, 0.1]
|
|
}).start(0.1);
|
|
Transport.start();
|
|
}, 0.8).then(function(){
|
|
expect(callCount).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it("can loop between loopStart and loopEnd", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
new Part({
|
|
"loopStart" : "8n",
|
|
"loopEnd" : "4n",
|
|
"loop" : true,
|
|
"callback" : function(time, value){
|
|
expect(value).to.be.at.least(1);
|
|
expect(value).to.be.at.most(2);
|
|
invoked = true;
|
|
},
|
|
"events" : [[0, 0], ["8n", 1], ["8n + 16n", 2], ["4n", 3]]
|
|
}).start(0);
|
|
Transport.start();
|
|
}, 0.8).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it("can be started and stopped multiple times", function(){
|
|
var eventTimeIndex = 0;
|
|
return Offline(function(Transport){
|
|
var eventTimes = [[0.5, 0], [0.6, 1], [1.1, 0], [1.2, 1], [1.3, 2], [1.4, 0], [1.5, 1], [1.6, 2]];
|
|
new Part({
|
|
"loopEnd" : 0.3,
|
|
"loopStart" : 0,
|
|
"loop" : true,
|
|
"callback" : function(time, value){
|
|
expect(eventTimes.length).to.be.gt(eventTimeIndex);
|
|
expect(eventTimes[eventTimeIndex][0]).to.be.closeTo(time, 0.05);
|
|
expect(eventTimes[eventTimeIndex][1]).to.equal(value);
|
|
eventTimeIndex++;
|
|
},
|
|
"events" : [[0, 0], [0.1, 1], [0.2, 2]]
|
|
}).start(0.3).stop(0.81);
|
|
Transport.start(0.2).stop(0.61).start(0.8);
|
|
}, 2).then(function(){
|
|
expect(eventTimeIndex).to.equal(8);
|
|
});
|
|
});
|
|
|
|
it("can adjust the loopEnd times", function(){
|
|
var eventTimeIndex = 0;
|
|
return Offline(function(Transport){
|
|
var eventTimes = [[0.5, 0], [0.6, 1], [1.1, 0], [1.2, 1], [1.3, 2], [1.4, 0], [1.5, 1], [1.6, 2]];
|
|
var part = new Part({
|
|
"loopEnd" : 0.2,
|
|
"loopStart" : 0,
|
|
"loop" : true,
|
|
"callback" : function(time, value){
|
|
expect(eventTimes.length).to.be.gt(eventTimeIndex);
|
|
expect(eventTimes[eventTimeIndex][0]).to.be.closeTo(time, 0.05);
|
|
expect(eventTimes[eventTimeIndex][1]).to.equal(value);
|
|
eventTimeIndex++;
|
|
},
|
|
"events" : [[0, 0], [0.1, 1], [0.2, 2]]
|
|
}).start(0.3).stop(0.81);
|
|
part.loopEnd = 0.4;
|
|
part.loopEnd = 0.3;
|
|
Transport.start(0.2).stop(0.61).start(0.8);
|
|
}, 2).then(function(){
|
|
expect(eventTimeIndex).to.equal(8);
|
|
});
|
|
});
|
|
|
|
it("reports the progress of the loop", function(){
|
|
var callCount = 0;
|
|
return Offline(function(Transport){
|
|
var part = new Part({
|
|
"loopStart" : 0,
|
|
"loopEnd" : 1,
|
|
"loop" : true,
|
|
"callback" : function(){
|
|
callCount++;
|
|
},
|
|
"events" : [0]
|
|
}).start(0);
|
|
Transport.start(0);
|
|
return function(time){
|
|
expect(part.progress).to.be.closeTo(time, 0.01);
|
|
};
|
|
}, 0.8).then(function(){
|
|
expect(callCount).to.equal(1);
|
|
});
|
|
});
|
|
|
|
it("can start a loop with an offset", function(){
|
|
var iteration = 0;
|
|
return Offline(function(Transport){
|
|
var now = Tone.now();
|
|
var part = new Part(function(time, number){
|
|
if (iteration === 0){
|
|
expect(number).to.equal(1);
|
|
expect(time - now).to.be.closeTo(0.2, 0.05);
|
|
} else if (iteration === 1){
|
|
expect(number).to.equal(0);
|
|
}
|
|
iteration++;
|
|
}, [[0, 0], [0.25, 1]]);
|
|
part.loop = true;
|
|
part.loopEnd = 0.5;
|
|
part.start(0, 1.05);
|
|
Transport.start(0);
|
|
}, 0.6).then(function(){
|
|
expect(iteration).to.equal(2);
|
|
});
|
|
});
|
|
|
|
it("can start a loop with an offset before loop start", function(){
|
|
var iteration = 0;
|
|
return Offline(function(Transport){
|
|
var part = new Part(function(time, number){
|
|
if (iteration === 0){
|
|
expect(number).to.equal(0);
|
|
} else if (iteration === 1){
|
|
expect(number).to.equal(1);
|
|
} else if (iteration === 2){
|
|
expect(number).to.equal(2);
|
|
} else if (iteration === 3){
|
|
expect(number).to.equal(1);
|
|
} else if (iteration === 4){
|
|
expect(number).to.equal(2);
|
|
}
|
|
iteration++;
|
|
}, [[0, 0], [0.25, 1], [0.30, 2]]);
|
|
part.loop = true;
|
|
part.loopStart = 0.25;
|
|
part.loopEnd = 0.5;
|
|
part.start(0, 0);
|
|
Transport.start(Tone.now());
|
|
}, 0.7).then(function(){
|
|
expect(iteration).to.equal(5);
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
context("playbackRate", function(){
|
|
|
|
it("can adjust the playbackRate", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
var lastCall;
|
|
new Part({
|
|
"playbackRate" : 2,
|
|
"loopEnd" : 1,
|
|
"loop" : true,
|
|
"events" : [0, 0.5],
|
|
"callback" : function(time){
|
|
if (lastCall){
|
|
invoked = true;
|
|
expect(time - lastCall).to.be.closeTo(0.25, 0.01);
|
|
}
|
|
lastCall = time;
|
|
}
|
|
}).start(0);
|
|
Transport.start(0);
|
|
}, 0.7).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
|
|
it("can adjust the playbackRate after starting", function(){
|
|
var invoked = false;
|
|
return Offline(function(Transport){
|
|
var lastCall;
|
|
var part = new Part({
|
|
"playbackRate" : 1,
|
|
"loopEnd" : 0.5,
|
|
"loop" : true,
|
|
"events" : [0, 0.25],
|
|
"callback" : function(time){
|
|
if (lastCall){
|
|
expect(time - lastCall).to.be.closeTo(0.5, 0.01);
|
|
} else {
|
|
invoked = true;
|
|
part.playbackRate = 0.5;
|
|
}
|
|
lastCall = time;
|
|
}
|
|
}).start(0);
|
|
Transport.start(0);
|
|
}, 0.8).then(function(){
|
|
expect(invoked).to.be.true;
|
|
});
|
|
});
|
|
});
|
|
});
|
|
|