tone/Tone/component/channel/Mono.test.ts

A Web Audio framework for making interactive music in the browser.

import { expect } from "chai";
import { BasicTests } from "test/helper/Basic";
import { Offline } from "test/helper/Offline";
import { StereoSignal } from "test/helper/StereoSignal";
import { Signal } from "Tone/signal/Signal";
import { Mono } from "./Mono";

describe("Mono", () => {

	BasicTests(Mono);

	context("Mono", () => {

		it("Makes a mono signal in both channels", () => {
			return Offline(() => {
				const mono = new Mono().toDestination();
				const signal = new Signal(2).connect(mono);
			}, 0.1, 2).then((buffer) => {
				expect(buffer.toArray()[0][0]).to.equal(2);
				expect(buffer.toArray()[1][0]).to.equal(2);
				expect(buffer.toArray()[0][100]).to.equal(2);
				expect(buffer.toArray()[1][100]).to.equal(2);
				expect(buffer.toArray()[0][1000]).to.equal(2);
				expect(buffer.toArray()[1][1000]).to.equal(2);
			});
		});

		it("Sums a stereo signal into a mono signal", () => {
			return Offline(() => {
				const mono = new Mono().toDestination();
				const signal = StereoSignal(2, 2).connect(mono);
			}, 0.1, 2).then((buffer) => {
				expect(buffer.toArray()[0][0]).to.equal(2);
				expect(buffer.toArray()[1][0]).to.equal(2);
				expect(buffer.toArray()[0][100]).to.equal(2);
				expect(buffer.toArray()[1][100]).to.equal(2);
				expect(buffer.toArray()[0][1000]).to.equal(2);
				expect(buffer.toArray()[1][1000]).to.equal(2);
			});
		});
	});
});