2019-06-19 14:15:15 +00:00
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import { BasicTests } from "test/helper/Basic";
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import { Noise } from "./Noise";
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2019-06-19 14:19:39 +00:00
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import { expect } from "chai";
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import { SourceTests } from "test/helper/SourceTests";
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import { OutputAudio } from "test/helper/OutputAudio";
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import { CompareToFile } from "test/helper/CompareToFile";
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2019-06-19 14:15:15 +00:00
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describe("Noise", () => {
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// run the common tests
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BasicTests(Noise);
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SourceTests(Noise);
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it("matches a file", () => {
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return CompareToFile(() => {
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const noise = new Noise().toMaster();
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noise.start(0.1).stop(0.2);
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}, "noise.wav", 9);
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});
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context("Get/Set", () => {
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it("can be constructed with an options object", () => {
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const noise = new Noise({
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type: "brown",
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});
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expect(noise.type).to.equal("brown");
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noise.dispose();
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});
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it("can set the playbackRate in the constructor", () => {
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const noise = new Noise({
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playbackRate: 2,
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});
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expect(noise.playbackRate).to.equal(2);
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noise.dispose();
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});
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it("can set the playbackRate after the noise is started", () => {
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return OutputAudio(() => {
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const noise = new Noise().toMaster();
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noise.start();
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noise.playbackRate = 3;
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expect(noise.playbackRate).to.equal(3);
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});
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});
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});
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context("Type", () => {
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it("can be set to 3 noise types", () => {
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const noise = new Noise();
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const types = ["white", "brown", "pink"];
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types.forEach(type => {
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// @ts-ignore
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noise.type = type;
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expect(noise.type).to.equal(type);
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});
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noise.dispose();
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});
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it("cant set invalid type", () => {
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const noise = new Noise();
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expect(() => {
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// @ts-ignore
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noise.type = "else";
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}).to.throw(Error);
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noise.dispose();
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});
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it("outputs white noise", () => {
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return OutputAudio(() => {
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const noise = new Noise("white");
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noise.toMaster();
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noise.start();
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});
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});
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it("outputs pink noise", () => {
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return OutputAudio(() => {
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const noise = new Noise("pink");
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noise.toMaster();
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noise.start();
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});
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});
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it("outputs brown noise", () => {
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return OutputAudio(() => {
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const noise = new Noise("brown");
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noise.toMaster();
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noise.start();
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});
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});
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it("can set the type after the noise is started", () => {
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return OutputAudio(() => {
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const noise = new Noise();
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noise.toMaster();
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noise.start();
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noise.type = "brown";
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});
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});
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});
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});
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