tone/Tone/signal/GainToAudio.test.ts

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

import { BasicTests } from "../../test/helper/Basic.js";
import { connectFrom, connectTo } from "../../test/helper/Connect.js";
import { ConstantOutput } from "../../test/helper/ConstantOutput.js";
import { Zero } from "./Zero.js";
import { GainToAudio } from "./GainToAudio.js";
import { Signal } from "./Signal.js";

describe("GainToAudio", () => {
	BasicTests(GainToAudio);

	context("Gain To Audio", () => {
		it("outputs 0 for an input value of 0.5", () => {
			return ConstantOutput(() => {
				const sig = new Signal(0.5);
				const g2a = new GainToAudio();
				sig.connect(g2a);
				g2a.toDestination();
			}, 0);
		});

		it("outputs 1 for an input value of 1", () => {
			return ConstantOutput(() => {
				const sig = new Signal(1);
				const g2a = new GainToAudio();
				sig.connect(g2a);
				g2a.toDestination();
			}, 1);
		});

		it("outputs -1 for an input value of 0", () => {
			return ConstantOutput(() => {
				const sig = new Zero();
				const g2a = new GainToAudio();
				sig.connect(g2a);
				g2a.toDestination();
			}, -1);
		});
	});
});