| 1 | import { expect } from "chai";
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| 2 | import { BasicTests } from "../../test/helper/Basic.js";
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| 3 | import { CompareToFile } from "../../test/helper/CompareToFile.js";
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| 4 | import { EffectTests } from "../../test/helper/EffectTests.js";
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| 5 | import { Oscillator } from "../source/oscillator/Oscillator.js";
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| 6 | import { FeedbackDelay } from "./FeedbackDelay.js";
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| 7 | import { FeedbackEffect } from "./FeedbackEffect.js";
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| 8 |
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| 9 | describe("FeedbackDelay", () => {
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| 10 | BasicTests(FeedbackDelay);
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| 11 | EffectTests(FeedbackDelay, 0.01);
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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 delay = new FeedbackDelay(0.1, 0.6).toDestination();
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| 17 | const osc = new Oscillator().connect(delay);
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| 18 | osc.type = "square";
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| 19 | osc.start(0).stop(0.01);
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| 20 | },
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| 21 | "feedbackDelay.wav",
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| 22 | 0.05
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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("extends FeedbackEffect", () => {
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| 28 | const feedbackDelay = new FeedbackDelay(0.2, 0.3);
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| 29 | expect(feedbackDelay).to.be.instanceOf(FeedbackEffect);
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| 30 | feedbackDelay.dispose();
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| 31 | });
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| 32 |
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| 33 | it("parses constructor arguments correctly", () => {
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| 34 | const feedbackDelay = new FeedbackDelay(0.1, 0.4);
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| 35 | expect(feedbackDelay.delayTime.value).to.be.closeTo(0.1, 0.01);
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| 36 | expect(feedbackDelay.feedback.value).to.be.closeTo(0.4, 0.01);
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| 37 | feedbackDelay.dispose();
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| 38 | });
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| 39 |
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| 40 | it("can pass in options in the constructor", () => {
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| 41 | const feedbackDelay = new FeedbackDelay({
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| 42 | delayTime: 0.2,
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| 43 | feedback: 0.3,
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| 44 | });
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| 45 | expect(feedbackDelay.delayTime.value).to.be.closeTo(0.2, 0.01);
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| 46 | expect(feedbackDelay.feedback.value).to.be.closeTo(0.3, 0.01);
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| 47 | feedbackDelay.dispose();
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| 48 | });
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| 49 |
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| 50 | it("can get/set the options", () => {
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| 51 | const feedbackDelay = new FeedbackDelay();
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| 52 | feedbackDelay.set({
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| 53 | feedback: 0.4,
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| 54 | });
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| 55 | expect(feedbackDelay.get().feedback).to.be.closeTo(0.4, 0.01);
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| 56 | feedbackDelay.dispose();
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| 57 | });
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| 58 |
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| 59 | it("can set the delayTime", () => {
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| 60 | const feedbackDelay = new FeedbackDelay();
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| 61 | feedbackDelay.delayTime.value = "4n";
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| 62 | expect(feedbackDelay.delayTime.value).to.be.closeTo(0.5, 0.001);
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| 63 | feedbackDelay.delayTime.value = 0.22;
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| 64 | expect(feedbackDelay.delayTime.value).to.be.closeTo(0.22, 0.001);
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| 65 | feedbackDelay.dispose();
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| 66 | });
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| 67 |
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| 68 | it("can set the feedback amount", () => {
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| 69 | const feedbackDelay = new FeedbackDelay();
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| 70 | feedbackDelay.feedback.value = 1;
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| 71 | expect(feedbackDelay.feedback.value).to.be.closeTo(1, 0.001);
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| 72 | feedbackDelay.feedback.value = 0.22;
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| 73 | expect(feedbackDelay.feedback.value).to.be.closeTo(0.22, 0.001);
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| 74 | feedbackDelay.dispose();
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| 75 | });
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| 76 | });
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| 77 | });
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