| 1 | import { Chorus } from "./Chorus.js";
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| 2 | import { BasicTests } from "../../test/helper/Basic.js";
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| 3 | import { EffectTests } from "../../test/helper/EffectTests.js";
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| 4 | import { expect } from "chai";
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| 5 | import { CompareToFile } from "../../test/helper/CompareToFile.js";
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| 6 | import { Oscillator } from "../source/index.js";
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| 7 | import { Offline } from "../../test/helper/Offline.js";
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| 8 |
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| 9 | describe("Chorus", () => {
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| 10 | BasicTests(Chorus);
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| 11 | EffectTests(Chorus);
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| 12 |
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| 13 | it("matches a file", () => {
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| 14 | return CompareToFile(
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| 15 | () => {
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| 16 | const chorus = new Chorus().toDestination().start();
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| 17 | const osc = new Oscillator(220, "sawtooth")
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| 18 | .connect(chorus)
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| 19 | .start();
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| 20 | },
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| 21 | "chorus.wav",
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| 22 | 0.25
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| 23 | );
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| 24 | });
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| 25 |
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| 26 | context("API", () => {
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| 27 | it("can pass in options in the constructor", () => {
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| 28 | const chorus = new Chorus({
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| 29 | frequency: 2,
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| 30 | delayTime: 1,
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| 31 | depth: 0.4,
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| 32 | spread: 90,
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| 33 | });
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| 34 | expect(chorus.frequency.value).to.be.closeTo(2, 0.01);
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| 35 | expect(chorus.delayTime).to.be.closeTo(1, 0.01);
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| 36 | expect(chorus.depth).to.be.closeTo(0.4, 0.01);
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| 37 | expect(chorus.spread).to.be.equal(90);
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| 38 | chorus.dispose();
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| 39 | });
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| 40 |
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| 41 | it("can get/set the options", () => {
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| 42 | const chorus = new Chorus();
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| 43 | chorus.set({
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| 44 | type: "square",
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| 45 | });
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| 46 | expect(chorus.get().type).to.equal("square");
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| 47 | chorus.dispose();
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| 48 | });
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| 49 |
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| 50 | it("can get/set the delayTime", () => {
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| 51 | const chorus = new Chorus();
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| 52 | chorus.delayTime = 3;
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| 53 | expect(chorus.delayTime).to.equal(3);
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| 54 | chorus.dispose();
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| 55 | });
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| 56 |
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| 57 | it("can be started and stopped", () => {
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| 58 | const chorus = new Chorus();
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| 59 | chorus.start().stop("+0.2");
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| 60 | chorus.dispose();
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| 61 | });
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| 62 |
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| 63 | it("can sync the frequency to the transport", () => {
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| 64 | return Offline(({ transport }) => {
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| 65 | const chorus = new Chorus(2);
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| 66 | chorus.sync();
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| 67 | chorus.frequency.toDestination();
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| 68 | transport.bpm.setValueAtTime(transport.bpm.value * 2, 0.05);
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| 69 |
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| 70 | }, 0.1).then((buffer) => {
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| 71 | expect(buffer.getValueAtTime(0)).to.be.closeTo(2, 0.1);
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| 72 | expect(buffer.getValueAtTime(0.05)).to.be.closeTo(4, 0.1);
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| 73 | });
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| 74 | });
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| 75 |
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| 76 | it("can unsync the frequency to the transport", () => {
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| 77 | return Offline(({ transport }) => {
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| 78 | const chorus = new Chorus(2);
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| 79 | chorus.sync();
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| 80 | chorus.frequency.toDestination();
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| 81 | transport.bpm.setValueAtTime(transport.bpm.value * 2, 0.05);
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| 82 | chorus.unsync();
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| 83 |
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| 84 | }, 0.1).then((buffer) => {
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| 85 | expect(buffer.getValueAtTime(0)).to.be.closeTo(2, 0.1);
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| 86 | expect(buffer.getValueAtTime(0.05)).to.be.closeTo(2, 0.1);
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| 87 | });
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| 88 | });
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| 89 | });
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| 90 | });
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