Tone.js/Tone/effect/Vibrato.test.ts

import { Vibrato } from "./Vibrato";
import { BasicTests } from "test/helper/Basic";
import { EffectTests } from "test/helper/EffectTests";
import { expect } from "chai";
import { CompareToFile } from "test/helper/CompareToFile";
import { Oscillator } from "Tone/source/oscillator/Oscillator";

describe("Vibrato", () => {
	BasicTests(Vibrato);
	EffectTests(Vibrato);

	it("matches a file", () => {
		return CompareToFile(() => {
			const vibrato = new Vibrato(4, 1).toDestination();
			const osc = new Oscillator().connect(vibrato).start();
		}, "vibrato.wav", 0.02);
	});

	context("API", () => {

		it("can pass in options in the constructor", () => {
			const vibrato = new Vibrato({
				maxDelay: 0.02,
				depth: 0.25,
				type: "sawtooth"
			});
			expect(vibrato.depth.value).to.be.closeTo(0.25, 0.001);
			expect(vibrato.type).to.equal("sawtooth");
			vibrato.dispose();
		});
		
		it("can get/set the options", () => {
			const vibrato = new Vibrato();
			vibrato.set({
				frequency: 2.4,
				type: "triangle"
			});
			expect(vibrato.get().frequency).to.be.closeTo(2.4, 0.01);
			expect(vibrato.get().type).to.equal("triangle");
			vibrato.dispose();
		});

		it("can set the frequency and depth", () => {
			const vibrato = new Vibrato();
			vibrato.depth.value = 0.4;
			vibrato.frequency.value = 0.4;
			expect(vibrato.depth.value).to.be.closeTo(0.4, 0.01);
			expect(vibrato.frequency.value).to.be.closeTo(0.4, 0.01);
			vibrato.dispose();
		});
	});
});