| 1 | import { BasicTests } from "../../test/helper/Basic.js";
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| 2 | import { MonoSynth } from "./MonoSynth.js";
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| 3 | import { InstrumentTest } from "../../test/helper/InstrumentTests.js";
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| 4 | import { CompareToFile } from "../../test/helper/CompareToFile.js";
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| 5 | import { expect } from "chai";
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| 6 | import { Offline } from "../../test/helper/Offline.js";
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| 7 |
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| 8 | describe("MonoSynth", () => {
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| 9 | BasicTests(MonoSynth);
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| 10 | InstrumentTest(MonoSynth, "C4");
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| 11 |
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| 12 | it("matches a file", () => {
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| 13 | return CompareToFile(
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| 14 | () => {
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| 15 | const synth = new MonoSynth().toDestination();
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| 16 | synth.triggerAttackRelease("C4", 0.1, 0.05);
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| 17 | },
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| 18 | "monoSynth.wav",
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| 19 | 0.01
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| 20 | );
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| 21 | });
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| 22 |
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| 23 | context("API", () => {
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| 24 | it("can get and set oscillator attributes", () => {
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| 25 | const monoSynth = new MonoSynth();
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| 26 | monoSynth.oscillator.type = "triangle";
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| 27 | expect(monoSynth.oscillator.type).to.equal("triangle");
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| 28 | monoSynth.dispose();
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| 29 | });
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| 30 |
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| 31 | it("can get and set envelope attributes", () => {
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| 32 | const monoSynth = new MonoSynth();
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| 33 | monoSynth.envelope.attack = 0.24;
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| 34 | expect(monoSynth.envelope.attack).to.equal(0.24);
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| 35 | monoSynth.dispose();
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| 36 | });
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| 37 |
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| 38 | it("can get and set filter attributes", () => {
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| 39 | const monoSynth = new MonoSynth();
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| 40 | monoSynth.filter.Q.value = 0.4;
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| 41 | expect(monoSynth.filter.Q.value).to.be.closeTo(0.4, 0.001);
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| 42 | monoSynth.dispose();
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| 43 | });
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| 44 |
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| 45 | it("can get and set filterEnvelope attributes", () => {
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| 46 | const monoSynth = new MonoSynth();
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| 47 | monoSynth.filterEnvelope.baseFrequency = 400;
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| 48 | expect(monoSynth.filterEnvelope.baseFrequency).to.equal(400);
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| 49 | monoSynth.dispose();
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| 50 | });
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| 51 |
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| 52 | it("can be constructed with an options object", () => {
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| 53 | const monoSynth = new MonoSynth({
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| 54 | envelope: {
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| 55 | sustain: 0.3,
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| 56 | },
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| 57 | });
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| 58 | expect(monoSynth.envelope.sustain).to.equal(0.3);
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| 59 | monoSynth.dispose();
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| 60 | });
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| 61 |
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| 62 | it("can get/set attributes", () => {
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| 63 | const monoSynth = new MonoSynth();
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| 64 | monoSynth.set({
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| 65 | envelope: {
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| 66 | decay: 0.24,
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| 67 | },
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| 68 | });
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| 69 | expect(monoSynth.get().envelope.decay).to.equal(0.24);
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| 70 | monoSynth.dispose();
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| 71 | });
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| 72 |
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| 73 | it("is silent after triggerAttack if sustain is 0", async () => {
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| 74 | return await Offline(() => {
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| 75 | const synth = new MonoSynth({
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| 76 | envelope: {
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| 77 | attack: 0.1,
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| 78 | decay: 0.1,
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| 79 | sustain: 0,
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| 80 | },
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| 81 | }).toDestination();
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| 82 | synth.triggerAttack("C4", 0);
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| 83 | }, 0.5).then((buffer) => {
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| 84 | expect(buffer.getTimeOfLastSound()).to.be.closeTo(0.2, 0.01);
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| 85 | });
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| 86 | });
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| 87 | });
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| 88 | });
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