mirror of
https://github.com/Tonejs/Tone.js
synced 2024-11-16 00:27:58 +00:00
454 lines
14 KiB
TypeScript
454 lines
14 KiB
TypeScript
import { expect } from "chai";
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import { BasicTests } from "test/helper/Basic";
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import { connectFrom, connectTo } from "test/helper/Connect";
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import { ConstantOutput } from "test/helper/ConstantOutput";
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import { Offline } from "test/helper/Offline";
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import { Gain } from "../core/context/Gain";
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import { Signal } from "./Signal";
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describe("Signal", () => {
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BasicTests(Signal);
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context("Signal Rate Value", () => {
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it("handles input and output connections", () => {
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const signal = new Signal();
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connectFrom().connect(signal);
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signal.connect(connectTo());
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signal.dispose();
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});
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it("can be created with an options object", () => {
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const signal = new Signal({
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units: "positive",
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value: 0.2,
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});
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expect(signal.value).to.be.closeTo(0.2, 0.001);
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expect(signal.units).to.equal("positive");
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signal.dispose();
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});
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it("can start with a value initially", () => {
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const signal = new Signal(2);
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expect(signal.value).to.equal(2);
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signal.dispose();
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});
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it("can set a value", () => {
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const signal = new Signal(0);
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signal.value = 10;
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expect(signal.value).to.equal(10);
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signal.dispose();
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});
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it("outputs a constant signal", () => {
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return ConstantOutput((context) => {
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const sig = new Signal(2.5).toMaster();
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}, 2.5);
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});
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it("takes on another signal's value when connected", () => {
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return ConstantOutput((context) => {
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const sigA = new Signal(1).toMaster();
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const sigB = new Signal(3);
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sigB.connect(sigA);
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}, 3);
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});
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it("takes the first signals value when many values are chained", () => {
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return ConstantOutput((context) => {
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const sigA = new Signal(3).toMaster();
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const sigB = new Signal(1).connect(sigA);
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const sigC = new Signal(2).connect(sigB);
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}, 2);
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});
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});
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context("Scheduling", () => {
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it("can be scheduled to set a value in the future", async () => {
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const buffer = await Offline((context) => {
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const sig = new Signal(0).toMaster();
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sig.setValueAtTime(2, 0.2);
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}, 0.25);
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.001);
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expect(buffer.getValueAtTime(0.19)).to.be.closeTo(0, 0.001);
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expect(buffer.getValueAtTime(0.2)).to.be.closeTo(2, 0.001);
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expect(buffer.getValueAtTime(0.24)).to.be.closeTo(2, 0.001);
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});
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it("can linear ramp from the current value to another value in the future", async () => {
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const buffer = await Offline(context => {
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const sig = new Signal(0).toMaster();
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sig.setValueAtTime(0, 0);
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sig.linearRampToValueAtTime(1, 0.1);
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}, 0.1);
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.001);
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expect(buffer.getValueAtTime(0.05)).to.be.closeTo(0.5, 0.001);
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expect(buffer.getValueAtTime(0.1)).to.be.closeTo(1, 0.001);
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});
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it("can schedule multiple automations", async () => {
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const buffer = await Offline(context => {
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const sig = new Signal(0).toMaster();
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sig.setValueAtTime(0, 0);
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sig.linearRampToValueAtTime(0.5, 0.5);
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sig.linearRampToValueAtTime(0, 1);
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}, 1);
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.001);
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expect(buffer.getValueAtTime(0.25)).to.be.closeTo(0.25, 0.001);
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expect(buffer.getValueAtTime(0.5)).to.be.closeTo(0.5, 0.001);
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expect(buffer.getValueAtTime(0.75)).to.be.closeTo(0.25, 0.001);
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expect(buffer.getValueAtTime(1)).to.be.closeTo(0, 0.001);
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});
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it("can schedule multiple automations from a connected signal", async () => {
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const buffer = await Offline((context) => {
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const output = new Signal(1).toMaster();
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const sig = new Signal(0).connect(output);
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sig.setValueAtTime(0, 0);
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sig.linearRampToValueAtTime(0.5, 0.5);
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sig.linearRampToValueAtTime(0, 1);
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}, 1);
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.001);
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expect(buffer.getValueAtTime(0.25)).to.be.closeTo(0.25, 0.001);
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expect(buffer.getValueAtTime(0.5)).to.be.closeTo(0.5, 0.001);
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expect(buffer.getValueAtTime(0.75)).to.be.closeTo(0.25, 0.001);
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expect(buffer.getValueAtTime(1)).to.be.closeTo(0, 0.001);
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});
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it("can disconnect from all the connected notes", () => {
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return ConstantOutput((context) => {
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const output0 = new Signal(1).toMaster();
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const output1 = new Signal(1).toMaster();
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const sig = new Signal(0).connect(output0);
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sig.connect(output1);
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sig.disconnect();
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sig.setValueAtTime(0, 0);
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sig.linearRampToValueAtTime(0.5, 0.5);
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sig.linearRampToValueAtTime(0, 1);
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}, 0);
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});
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it("can disconnect from a specific node", () => {
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return ConstantOutput((context) => {
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const output = new Signal(1).toMaster();
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const sig = new Signal(0).connect(output);
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sig.disconnect(output);
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sig.setValueAtTime(0, 0);
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sig.linearRampToValueAtTime(0.5, 0.5);
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sig.linearRampToValueAtTime(0, 1);
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}, 0);
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});
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it("can schedule multiple automations from a connected signal through a multiple nodes", async () => {
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const buffer = await Offline(() => {
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const output = new Signal(0).toMaster();
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const proxy = new Signal(0).connect(output);
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const gain = new Gain(1).connect(proxy);
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const sig = new Signal(0).connect(gain);
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sig.setValueAtTime(0, 0);
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sig.linearRampToValueAtTime(0.5, 0.5);
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sig.linearRampToValueAtTime(0, 1);
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}, 1);
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.01);
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expect(buffer.getValueAtTime(0.1)).to.be.closeTo(0.1, 0.01);
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expect(buffer.getValueAtTime(0.25)).to.be.closeTo(0.25, 0.01);
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expect(buffer.getValueAtTime(0.5)).to.be.closeTo(0.5, 0.01);
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expect(buffer.getValueAtTime(0.75)).to.be.closeTo(0.25, 0.01);
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expect(buffer.getValueAtTime(1)).to.be.closeTo(0, 0.01);
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});
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it("can cancel an automation", () => {
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return ConstantOutput(() => {
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const sig = new Signal(1).toMaster();
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sig.setValueAtTime(4, 0.1);
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sig.exponentialRampToValueAtTime(3, 0.2);
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sig.cancelScheduledValues(0);
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}, 1);
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});
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it("can cancel and hold a linear automation curve", async () => {
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const buffer = await Offline(() => {
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const sig = new Signal(0).toMaster();
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sig.linearRampTo(2, 1);
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sig.cancelAndHoldAtTime(0.5);
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}, 1);
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.1);
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expect(buffer.getValueAtTime(0.25)).to.be.closeTo(0.5, 0.1);
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expect(buffer.getValueAtTime(0.5)).to.be.closeTo(1, 0.1);
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expect(buffer.getValueAtTime(0.75)).to.be.closeTo(1, 0.1);
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});
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it("can cancel and hold an exponential automation curve", () => {
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return Offline(() => {
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const sig = new Signal(1).toMaster();
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sig.exponentialRampTo(2, 1);
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sig.cancelAndHoldAtTime(0.5);
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}, 1).then(buffer => {
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expect(buffer.getValueAtTime(0)).to.be.closeTo(1, 0.1);
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expect(buffer.getValueAtTime(0.25)).to.be.closeTo(1.2, 0.1);
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expect(buffer.getValueAtTime(0.5)).to.be.closeTo(1.4, 0.1);
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expect(buffer.getValueAtTime(0.75)).to.be.closeTo(1.4, 0.1);
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});
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});
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it("can set a linear ramp from the current time", () => {
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return Offline(() => {
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const sig = new Signal(0).toMaster();
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sig.linearRampTo(2, 0.3);
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}, 0.5).then((buffer) => {
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buffer.forEach((sample, time) => {
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if (time > 0.3) {
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expect(sample).to.be.closeTo(2, 0.02);
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}
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});
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});
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});
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it("can set an linear ramp in the future", () => {
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return Offline(() => {
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const sig = new Signal(1).toMaster();
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sig.linearRampTo(50, 0.3, 0.2);
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}, 0.7).then((buffer) => {
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buffer.forEach((sample, time) => {
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if (time >= 0.6) {
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expect(sample).to.be.closeTo(50, 0.5);
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} else if (time < 0.2) {
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expect(sample).to.closeTo(1, 0.01);
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}
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});
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});
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});
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it("can set a exponential approach ramp from the current time", () => {
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return Offline(() => {
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const sig = new Signal(0).toMaster();
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sig.targetRampTo(1, 0.3);
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}, 0.5).then((buffer) => {
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expect(buffer.getValueAtTime(0)).to.be.below(0.0001);
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expect(buffer.getValueAtTime(0.3)).to.be.closeTo(1, 0.02);
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});
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});
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it("can set an exponential approach ramp in the future", () => {
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return Offline(() => {
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const sig = new Signal(1).toMaster();
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sig.targetRampTo(50, 0.3, 0.2);
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}, 0.7).then((buffer) => {
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expect(buffer.getValueAtTime(0)).to.be.closeTo(1, 0.0001);
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expect(buffer.getValueAtTime(0.2)).to.be.closeTo(1, 0.0001);
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expect(buffer.getValueAtTime(0.6)).to.be.closeTo(50, 0.5);
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});
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});
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it("can set an exponential ramp from the current time", () => {
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return Offline(() => {
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const sig = new Signal(1).toMaster();
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sig.exponentialRampTo(50, 0.4);
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}, 0.6).then((buffer) => {
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buffer.forEach((sample, time) => {
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if (time >= 0.4) {
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expect(sample).to.be.closeTo(50, 0.5);
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} else if (time < 0.39) {
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expect(sample).to.be.lessThan(50);
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}
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});
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});
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});
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it("can set an exponential ramp in the future", () => {
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return Offline(() => {
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const sig = new Signal(1).toMaster();
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sig.exponentialRampTo(50, 0.3, 0.2);
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}, 0.8).then((buffer) => {
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buffer.forEach((sample, time) => {
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if (time >= 0.6) {
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expect(sample).to.be.closeTo(50, 0.5);
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} else if (time < 0.2) {
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expect(sample).to.equal(1);
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}
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});
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});
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});
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it("rampTo ramps from the current value", () => {
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return Offline(() => {
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const sig = new Signal(3).toMaster();
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sig.rampTo(0.2, 0.1);
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}, 0.4).then((buffer) => {
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buffer.forEach((sample, time) => {
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if (time >= 0.1) {
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expect(sample).to.be.closeTo(0.2, 0.1);
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} else {
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expect(sample).to.be.greaterThan(0.2);
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}
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});
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});
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});
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it("rampTo ramps from the current value at a specific time", () => {
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return Offline(() => {
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const sig = new Signal(0).toMaster();
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sig.rampTo(2, 0.1, 0.4);
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}, 0.6).then((buffer) => {
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buffer.forEach((sample, time) => {
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if (time < 0.4) {
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expect(sample).to.be.closeTo(0, 0.1);
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} else if (time > 0.5) {
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expect(sample).to.be.closeTo(2, 0.1);
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}
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});
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});
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});
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it("can set a value curve", () => {
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return Offline(() => {
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const sig = new Signal(0).toMaster();
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sig.setValueCurveAtTime([0, 1, 0.5, 0.2], 0, 1);
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}, 1).then((buffer) => {
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.01);
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expect(buffer.getValueAtTime(0.33 / 2)).to.be.closeTo(0.5, 0.01);
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expect(buffer.getValueAtTime(0.33)).to.be.closeTo(1, 0.02);
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expect(buffer.getValueAtTime(0.66)).to.be.closeTo(0.5, 0.02);
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expect(buffer.getValueAtTime(0.99)).to.be.closeTo(0.2, 0.02);
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});
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});
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it("can set a value curve in the future", () => {
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return Offline(() => {
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const sig = new Signal(0).toMaster();
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sig.setValueCurveAtTime([0, 1, 0.5, 0.2], 0.5, 1);
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}, 1.5).then((buffer) => {
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expect(buffer.getValueAtTime(0 + 0.5)).to.be.closeTo(0, 0.01);
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expect(buffer.getValueAtTime(0.33 / 2 + 0.5)).to.be.closeTo(0.5, 0.01);
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expect(buffer.getValueAtTime(0.33 + 0.5)).to.be.closeTo(1, 0.02);
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expect(buffer.getValueAtTime(0.66 + 0.5)).to.be.closeTo(0.5, 0.02);
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expect(buffer.getValueAtTime(0.99 + 0.5)).to.be.closeTo(0.2, 0.02);
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});
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});
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it("can set an exponential approach", () => {
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return Offline(() => {
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const sig = new Signal(0).toMaster();
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sig.exponentialApproachValueAtTime(2, 0.1, 0.5);
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}, 1).then((buffer) => {
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expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.01);
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expect(buffer.getValueAtTime(0.1)).to.be.closeTo(0, 0.01);
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expect(buffer.getValueAtTime(0.4)).to.be.closeTo(1.9, 0.1);
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expect(buffer.getValueAtTime(0.6)).to.be.closeTo(2, 0.01);
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});
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});
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});
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context("Units", () => {
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it("can be created with specific units", () => {
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const signal = new Signal(0, "bpm");
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expect(signal.units).to.equal("bpm");
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signal.dispose();
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});
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it("can evaluate the given units", () => {
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const signal = new Signal(2, "time");
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signal.value = 0.5;
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expect(signal.value).to.be.closeTo(0.5, 0.001);
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signal.dispose();
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});
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it("converts the given units when passed in the constructor", () => {
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return ConstantOutput(() => {
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const signal = new Signal({
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units: "decibels",
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value: -10,
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}).toMaster();
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}, 0.315);
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});
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it("can be set to not convert the given units", () => {
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return ConstantOutput(() => {
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const signal = new Signal({
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convert: false,
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units: "decibels",
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value: -10,
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}).toMaster();
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}, -10);
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});
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it("converts Frequency units", () => {
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const signal = new Signal<"frequency">("50hz", "frequency");
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expect(signal.value).to.be.closeTo(50, 0.01);
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signal.dispose();
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});
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it("converts Time units", () => {
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const signal = new Signal<"time">("4n", "time");
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expect(signal.value).to.be.closeTo(0.5, 0.01);
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signal.dispose();
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});
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it("converts NormalRange units", () => {
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const signal = new Signal(2, "normalRange");
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expect(signal.value).to.be.closeTo(1, 0.01);
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signal.dispose();
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});
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it("converts AudioRange units", () => {
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const signal = new Signal(-2, "audioRange");
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expect(signal.value).to.be.closeTo(-1, 0.01);
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signal.dispose();
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});
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it("converts Positive units", () => {
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const signal = new Signal(-2, "positive");
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expect(signal.value).to.be.closeTo(0, 0.01);
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signal.dispose();
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});
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});
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// context("Transport Syncing", () => {
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// it("maintains its original value after being synced to the transport", () => {
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// return ConstantOutput(function(Transport) {
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// const sig = new Signal(3).toMaster();
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// Transport.syncSignal(sig);
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// }, 3);
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// });
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// it("keeps the ratio when the bpm changes", () => {
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// return ConstantOutput(function(Transport) {
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// Transport.bpm.value = 120;
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// const sig = new Signal(5).toMaster();
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// Transport.syncSignal(sig);
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// Transport.bpm.value = 240;
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// }, 10);
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// });
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// it("can ramp along with the bpm", () => {
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// return Offline(function(Transport) {
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// Transport.bpm.value = 120;
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// const sig = new Signal(2).toMaster();
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// Transport.syncSignal(sig);
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// Transport.bpm.rampTo(240, 0.5);
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// }).then((buffer) => {
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// buffer.forEach((sample, time) => {
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// if (time >= 0.5) {
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// expect(sample).to.be.closeTo(4, 0.04);
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// } else if (time < 0.4) {
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// expect(sample).to.be.within(1.95, 3);
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// }
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// });
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// });
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// });
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// it("returns to the original value when unsynced", () => {
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// return ConstantOutput(function(Transport) {
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// Transport.bpm.value = 120;
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// const sig = new Signal(5).toMaster();
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// Transport.syncSignal(sig);
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// Transport.bpm.value = 240;
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// Transport.unsyncSignal(sig);
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// }, 5);
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// });
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// });
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});
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