mirror of
https://github.com/Tonejs/Tone.js
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aaf880c925
* WIP moving tests to web-test-runner * updating thresholds * Adding file extensions * Testing integrations * linting * fixing dep * moving back to root dir * prettier all of the files * updating eslint rules to use with prettier * remove import package * moving tsignore around * removing unneeded ignores * all tests run on puppeteer, no need for testing guards * linting * import type syntax * cleaning up * Update package.json
90 lines
2.8 KiB
TypeScript
90 lines
2.8 KiB
TypeScript
import { expect } from "chai";
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import { BasicTests } from "../../test/helper/Basic.js";
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import { ConstantOutput } from "../../test/helper/ConstantOutput.js";
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import { Offline } from "../../test/helper/Offline.js";
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import { Signal } from "./Signal.js";
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import { WaveShaper } from "./WaveShaper.js";
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describe("WaveShaper", () => {
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BasicTests(WaveShaper);
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describe("Construction Options", () => {
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it("can be constructed with an array", () => {
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const waveshaper = new WaveShaper([1, 2, 3, 4, 5, 6]);
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expect(waveshaper.curve && waveshaper.curve[0]).to.equal(1);
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expect(waveshaper.curve && waveshaper.curve[2]).to.equal(3);
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});
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it("can be constructed with a mapping function", () => {
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const waveshaper = new WaveShaper(() => {
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return -2;
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});
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expect(waveshaper.curve && waveshaper.curve[0]).to.equal(-2);
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expect(waveshaper.curve && waveshaper.curve[1]).to.equal(-2);
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});
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it("can be constructed with a length and then set with a map", () => {
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const waveshaper = new WaveShaper(() => 10, 2048);
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expect(waveshaper.curve && waveshaper.curve.length).to.equal(2048);
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expect(waveshaper.curve && waveshaper.curve[0]).to.equal(10);
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expect(waveshaper.curve && waveshaper.curve[1]).to.equal(10);
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});
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it("can be set to oversample", () => {
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const waveshaper = new WaveShaper();
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expect(waveshaper.oversample).to.equal("none");
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waveshaper.oversample = "2x";
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expect(waveshaper.oversample).to.equal("2x");
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expect(() => {
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// @ts-ignore
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waveshaper.oversample = "3x";
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}).to.throw(Error);
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});
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});
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describe("Logic", () => {
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it("shapes the output of the incoming signal", () => {
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return ConstantOutput(() => {
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const signal = new Signal(1);
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const waveshaper = new WaveShaper([-10, -10, -10]);
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signal.connect(waveshaper);
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waveshaper.toDestination();
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}, -10);
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});
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it("outputs the last curve value when the input is above 1", () => {
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return ConstantOutput(() => {
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const signal = new Signal(10);
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const waveshaper = new WaveShaper([-20, 20]);
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signal.connect(waveshaper);
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waveshaper.toDestination();
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}, 20);
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});
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it("outputs the first curve value when the input is below -1", () => {
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return ConstantOutput(() => {
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const signal = new Signal(-1);
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const waveshaper = new WaveShaper([-20, 20]);
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signal.connect(waveshaper);
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waveshaper.toDestination();
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}, -20);
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});
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it("maps the input through the waveshaping curve", () => {
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return Offline(() => {
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const signal = new Signal(-1);
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const waveshaper = new WaveShaper((input) => {
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return input * 2;
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});
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signal.connect(waveshaper);
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waveshaper.toDestination();
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signal.setValueAtTime(-1, 0);
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signal.linearRampToValueAtTime(1, 1);
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}, 1).then((buffer) => {
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buffer.forEach((sample, time) => {
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expect(sample).to.be.closeTo(2 * (time * 2 - 1), 0.005);
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});
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});
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});
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});
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});
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