mirror of
https://github.com/eliasstepanik/strudel-docker.git
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729 lines
22 KiB
JavaScript
729 lines
22 KiB
JavaScript
import Fraction from 'fraction.js';
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import { deepStrictEqual, strict as assert } from 'assert';
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import {
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TimeSpan,
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Hap,
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State,
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Pattern,
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pure,
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stack,
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fastcat,
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slowcat,
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cat,
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sequence,
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polymeter,
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polymeterSteps,
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polyrhythm,
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silence,
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fast,
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timeCat,
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add,
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sub,
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mul,
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div,
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saw,
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saw2,
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isaw,
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isaw2,
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sine,
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sine2,
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square,
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square2,
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tri,
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tri2,
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id,
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ply,
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} from '../index.mjs';
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import { steady } from '../signal.mjs';
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//import { Time } from 'tone';
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import pkg from 'tone';
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const { Time } = pkg;
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const st = (begin, end) => new State(ts(begin, end));
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const ts = (begin, end) => new TimeSpan(Fraction(begin), Fraction(end));
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const hap = (whole, part, value, context = {}) => new Hap(whole, part, value, context);
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const third = Fraction(1, 3);
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const twothirds = Fraction(2, 3);
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const sameFirst = (a, b) => {
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return assert.deepStrictEqual(a.firstCycle(), b.firstCycle());
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};
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describe('TimeSpan', function () {
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describe('equals()', function () {
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it('Should be equal to the same value', function () {
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assert.equal(new TimeSpan(0, 4).equals(new TimeSpan(0, 4)), true);
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});
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});
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describe('splitCycles', function () {
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it('Should split two cycles into two', function () {
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assert.equal(new TimeSpan(Fraction(0), Fraction(2)).spanCycles.length, 2);
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});
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});
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describe('intersection_e', function () {
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var a = new TimeSpan(Fraction(0), Fraction(2));
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var b = new TimeSpan(Fraction(1), Fraction(3));
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var c = new TimeSpan(Fraction(1), Fraction(2));
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var d = new TimeSpan(Fraction(1), Fraction(2));
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it('Should create an intersection', function () {
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assert.equal(a.intersection_e(b).equals(c), true);
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});
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});
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});
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describe('Hap', function () {
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describe('hasOnset()', function () {
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it('True if part includes onset from whole', function () {
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assert.equal(new Hap(new TimeSpan(0, 1), new TimeSpan(0, 1), 'thing').hasOnset(), true);
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});
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});
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var a = new Hap(new TimeSpan(Fraction(0), Fraction(0.5)), new TimeSpan(Fraction(0), Fraction(0.5)), 'a');
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var b = new Hap(new TimeSpan(Fraction(0), Fraction(0.5)), new TimeSpan(Fraction(0), Fraction(0.5)), 'b');
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var c = new Hap(new TimeSpan(Fraction(0), Fraction(0.25)), new TimeSpan(Fraction(0), Fraction(0.5)), 'c');
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var d = new Hap(undefined, new TimeSpan(Fraction(0), Fraction(0.5)), 'd');
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var e = new Hap(undefined, new TimeSpan(Fraction(0), Fraction(0.5)), 'e');
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describe('spanEquals', function () {
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it('True if two haps have the same whole and part', function () {
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assert.equal(a.spanEquals(b), true);
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});
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it("False if two haps don't the same whole and part", function () {
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assert.equal(a.spanEquals(c), false);
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});
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it('True if two haps have the same part and undefined wholes', function () {
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assert.equal(d.spanEquals(e), true);
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});
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});
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describe('resolveState()', () => {
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it('Can increment some state', function () {
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const stateful_value = (state) => {
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const newValue = state['incrementme'];
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// TODO Does the state *need* duplicating here?
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const newState = { ...state };
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newState['incrementme']++;
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return [newState, newValue];
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};
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const state = { incrementme: 10 };
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const ev1 = new Hap(ts(0, 1), ts(0, 1), stateful_value, {}, true);
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const [state2, ev2] = ev1.resolveState(state);
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const [state3, ev3] = ev1.resolveState(state2);
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assert.deepStrictEqual(ev3, new Hap(ts(0, 1), ts(0, 1), 11, {}, false));
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assert.deepStrictEqual(state3, { incrementme: 12 });
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});
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});
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describe('wholeOrPart()', () => {
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const ts1 = new TimeSpan(Fraction(0), Fraction(1));
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const ts0_5 = new TimeSpan(Fraction(0), Fraction(0.5));
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const continuousHap = new Hap(undefined, ts1, 'hello');
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const discreteHap = new Hap(ts1, ts0_5, 'hello');
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it('Can pick a whole', () => {
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assert.deepStrictEqual(discreteHap.wholeOrPart(), ts1);
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});
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it('Can pick a part', () => {
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assert.deepStrictEqual(continuousHap.wholeOrPart(), ts1);
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});
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});
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});
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describe('Pattern', function () {
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describe('pure', function () {
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it('Can make a pattern', function () {
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assert.equal(pure('hello').query(st(0.5, 2.5)).length, 3);
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});
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});
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describe('fmap()', function () {
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it('Can add things', function () {
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assert.equal(
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pure(3)
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.fmap((x) => x + 4)
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.firstCycle()[0].value,
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7,
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);
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});
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});
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describe('add()', function () {
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it('Can add things', function () {
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assert.equal(pure(3).add(pure(4)).query(st(0, 1))[0].value, 7);
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});
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});
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describe('sub()', function () {
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it('Can subtract things', function () {
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assert.equal(pure(3).sub(pure(4)).query(st(0, 1))[0].value, -1);
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});
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});
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describe('mul()', function () {
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it('Can multiply things', function () {
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assert.equal(pure(3).mul(pure(2)).firstCycle()[0].value, 6);
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});
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});
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describe('div()', function () {
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it('Can divide things', function () {
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assert.equal(pure(3).div(pure(2)).firstCycle()[0].value, 1.5);
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});
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});
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describe('set()', function () {
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it('Can set things in objects', function () {
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assert.deepStrictEqual(
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pure({ a: 4, b: 6 })
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.set(pure({ c: 7 }))
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.firstCycle()[0].value,
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{ a: 4, b: 6, c: 7 },
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);
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sameFirst(
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sequence({ a: 1, b: 2 }, { a: 2, b: 2 }, { a: 3, b: 2 }).set({ a: 4, c: 5 }),
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sequence({ a: 4, b: 2, c: 5 }).fast(3),
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);
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});
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it('Can set things with plain values', function () {
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sameFirst(sequence(1, 2, 3).set(4), sequence(4).fast(3));
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});
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describe('setFlip()', () => {
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it('Can set things with structure from second pattern', () => {
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sameFirst(sequence(1, 2).setFlip(4), pure(4).mask(true, true));
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});
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});
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describe('setSqueeze()', () => {
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it('Can squeeze one pattern inside the events of another', () => {
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sameFirst(
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sequence(1, [2, 3]).setSqueeze(sequence('a', 'b', 'c')),
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sequence(
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['a', 'b', 'c'],
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[
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['a', 'b', 'c'],
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['a', 'b', 'c'],
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],
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),
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);
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sameFirst(
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sequence(1, [2, 3]).setSqueeze('a', 'b', 'c'),
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sequence(
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['a', 'b', 'c'],
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[
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['a', 'b', 'c'],
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['a', 'b', 'c'],
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],
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),
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);
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});
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});
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});
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describe('stack()', function () {
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it('Can stack things', function () {
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assert.deepStrictEqual(
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stack(pure('a'), pure('b'), pure('c'))
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.firstCycle()
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.map((h) => h.value),
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['a', 'b', 'c'],
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);
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});
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});
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describe('_fast()', function () {
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it('Makes things faster', function () {
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assert.equal(pure('a')._fast(2).firstCycle().length, 2);
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});
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});
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describe('_fastGap()', function () {
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it('Makes things faster, with a gap', function () {
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assert.deepStrictEqual(
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sequence('a', 'b', 'c')._fastGap(2).firstCycle(),
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sequence(['a', 'b', 'c'], silence).firstCycle(),
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);
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assert.deepStrictEqual(
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sequence('a', 'b', 'c')._fastGap(3).firstCycle(),
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sequence(['a', 'b', 'c'], silence, silence).firstCycle(),
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);
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});
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it('Makes things faster, with a gap, when speeded up further', function () {
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assert.deepStrictEqual(
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sequence('a', 'b', 'c')._fastGap(2).fast(2).firstCycle(),
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sequence(['a', 'b', 'c'], silence, ['a', 'b', 'c'], silence).firstCycle(),
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);
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});
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});
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describe('_compressSpan()', function () {
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it('Can squash cycles of a pattern into a given timespan', function () {
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assert.deepStrictEqual(
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pure('a')._compressSpan(new TimeSpan(0.25, 0.5)).firstCycle(),
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sequence(silence, 'a', silence, silence).firstCycle(),
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);
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});
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});
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describe('fast()', function () {
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it('Makes things faster', function () {
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assert.equal(pure('a').fast(2).firstCycle().length, 2);
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});
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it('Makes things faster, with a pattern of factors', function () {
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assert.equal(pure('a').fast(sequence(1, 4)).firstCycle().length, 3);
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// .fast(sequence(1,silence) is a quick hack to cut an event in two..
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assert.deepStrictEqual(
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pure('a').fast(sequence(1, 4)).firstCycle(),
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stack(pure('a').fast(sequence(1, silence)), sequence(silence, ['a', 'a'])).firstCycle(),
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);
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});
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it('defaults to accepting sequences', function () {
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assert.deepStrictEqual(
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sequence(1, 2, 3).fast(sequence(1.5, 2)).firstCycle(),
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sequence(1, 2, 3).fast(1.5, 2).firstCycle(),
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);
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});
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it('works as a static function', function () {
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assert.deepStrictEqual(
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sequence(1, 2, 3).fast(1, 2).firstCycle(),
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fast(sequence(1, 2), sequence(1, 2, 3)).firstCycle(),
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);
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});
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it('works as a curried static function', function () {
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assert.deepStrictEqual(
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sequence(1, 2, 3).fast(1, 2).firstCycle(),
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fast(sequence(1, 2))(sequence(1, 2, 3)).firstCycle(),
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);
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});
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});
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describe('_slow()', function () {
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it('Makes things slower', function () {
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assert.deepStrictEqual(
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pure('a')._slow(2).firstCycle()[0],
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new Hap(new TimeSpan(Fraction(0), Fraction(2)), new TimeSpan(Fraction(0), Fraction(1)), 'a'),
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);
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const pat = sequence(pure('c3'), pure('eb3')._slow(2)); // => try mini('c3 eb3/2') in repl
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assert.deepStrictEqual(pat.query(st(0, 1))[1], hap(ts(0.5, 1.5), ts(1 / 2, 1), 'eb3'));
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// the following test fails
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/* assert.deepStrictEqual(
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pat.query(ts(1,2))[1], undefined
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) */
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// expecting [c3 eb3] [c3 ~]
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// what happens [c3 eb3] [c3 eb3]
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// notable examples:
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// mini('[c3 g3]/2 eb3') always plays [c3 eb3]
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// mini('eb3 [c3 g3]/2 ') always plays [c3 g3]
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});
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});
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describe('_filterValues()', function () {
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it('Filters true', function () {
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assert.equal(
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pure(true)
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._filterValues((x) => x)
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.firstCycle().length,
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1,
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);
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});
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});
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describe('when()', function () {
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it('Always faster', function () {
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assert.equal(
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pure('a')
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.when(pure(true), (x) => x._fast(2))
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.firstCycle().length,
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2,
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);
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});
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it('Never faster', function () {
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assert.equal(
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pure('a')
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.when(pure(false), (x) => x._fast(2))
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.firstCycle().length,
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1,
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);
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});
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it('Can alternate', function () {
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assert.deepStrictEqual(
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pure(10).when(slowcat(true, false), add(3)).fast(4)._sortEventsByPart().firstCycle(),
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fastcat(13, 10, 13, 10).firstCycle(),
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);
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});
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});
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describe('fastcat()', function () {
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it('Can concatenate two things', function () {
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assert.deepStrictEqual(
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fastcat(pure('a'), pure('b'))
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.firstCycle()
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.map((x) => x.value),
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['a', 'b'],
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);
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});
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});
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describe('slowcat()', function () {
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it('Can concatenate things slowly', function () {
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assert.deepStrictEqual(
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slowcat('a', 'b')
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.firstCycle()
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.map((x) => x.value),
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['a'],
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);
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assert.deepStrictEqual(
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slowcat('a', 'b')
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._early(1)
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.firstCycle()
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.map((x) => x.value),
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['b'],
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);
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assert.deepStrictEqual(
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slowcat('a', slowcat('b', 'c'))
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._early(1)
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.firstCycle()
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.map((x) => x.value),
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['b'],
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);
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assert.deepStrictEqual(
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slowcat('a', slowcat('b', 'c'))
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._early(3)
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.firstCycle()
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.map((x) => x.value),
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['c'],
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);
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});
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});
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describe('rev()', function () {
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it('Can reverse things', function () {
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assert.deepStrictEqual(
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fastcat('a', 'b', 'c')
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.rev()
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.firstCycle()
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.sort((a, b) => a.part.begin.sub(b.part.begin))
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.map((a) => a.value),
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['c', 'b', 'a'],
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);
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});
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});
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describe('sequence()', () => {
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it('Can work like fastcat', () => {
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assert.deepStrictEqual(sequence(1, 2, 3).firstCycle(), fastcat(1, 2, 3).firstCycle());
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});
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});
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describe('polyrhythm()', () => {
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it('Can layer up cycles', () => {
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assert.deepStrictEqual(
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polyrhythm(['a', 'b'], ['c']).firstCycle(),
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stack(fastcat(pure('a'), pure('b')), pure('c')).firstCycle(),
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);
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});
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});
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describe('polymeter()', () => {
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it('Can layer up cycles, stepwise', () => {
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assert.deepStrictEqual(
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polymeterSteps(3, ['d', 'e']).firstCycle(),
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fastcat(pure('d'), pure('e'), pure('d')).firstCycle(),
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);
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assert.deepStrictEqual(
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polymeter(['a', 'b', 'c'], ['d', 'e']).fast(2).firstCycle(),
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stack(sequence('a', 'b', 'c', 'a', 'b', 'c'), sequence('d', 'e', 'd', 'e', 'd', 'e')).firstCycle(),
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);
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});
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});
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describe('every()', () => {
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it('Can apply a function every 3rd time', () => {
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assert.deepStrictEqual(
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pure('a')
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.every(3, (x) => x._fast(2))
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._fast(3)
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.firstCycle(),
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sequence(sequence('a', 'a'), 'a', 'a').firstCycle(),
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);
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});
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it('works with currying', () => {
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assert.deepStrictEqual(
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pure('a').every(3, fast(2))._fast(3).firstCycle(),
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sequence(sequence('a', 'a'), 'a', 'a').firstCycle(),
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);
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assert.deepStrictEqual(
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sequence(3, 4, 5).every(3, add(3)).fast(5).firstCycle(),
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sequence(6, 7, 8, 3, 4, 5, 3, 4, 5, 6, 7, 8, 3, 4, 5).firstCycle(),
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);
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assert.deepStrictEqual(
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sequence(3, 4, 5).every(2, sub(1)).fast(5).firstCycle(),
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sequence(2, 3, 4, 3, 4, 5, 2, 3, 4, 3, 4, 5, 2, 3, 4).firstCycle(),
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);
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assert.deepStrictEqual(
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sequence(3, 4, 5).every(3, add(3)).every(2, sub(1)).fast(2).firstCycle(),
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sequence(5, 6, 7, 3, 4, 5).firstCycle(),
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);
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});
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});
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describe('timeCat()', function () {
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it('Can concatenate patterns with different relative durations', function () {
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assert.deepStrictEqual(
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sequence('a', ['a', 'a']).firstCycle(),
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timeCat([1, 'a'], [0.5, 'a'], [0.5, 'a']).firstCycle(),
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);
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});
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});
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describe('struct()', function () {
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it('Can restructure a discrete pattern', function () {
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assert.deepStrictEqual(sequence('a', 'b').struct(sequence(true, true, true)).firstCycle(), [
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hap(ts(0, third), ts(0, third), 'a'),
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hap(ts(third, twothirds), ts(third, 0.5), 'a'),
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hap(ts(third, twothirds), ts(0.5, twothirds), 'b'),
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hap(ts(twothirds, 1), ts(twothirds, 1), 'b'),
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]);
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assert.deepStrictEqual(
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pure('a')
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.struct(sequence(true, [true, false], true))
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.firstCycle(),
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sequence('a', ['a', silence], 'a').firstCycle(),
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);
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assert.deepStrictEqual(
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pure('a')
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.struct(sequence(true, [true, false], true).invert())
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.firstCycle(),
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sequence(silence, [silence, 'a'], silence).firstCycle(),
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);
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assert.deepStrictEqual(
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pure('a')
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.struct(sequence(true, [true, silence], true))
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.firstCycle(),
|
|
sequence('a', ['a', silence], 'a').firstCycle(),
|
|
);
|
|
});
|
|
it('Can structure a continuous pattern', () => {
|
|
assert.deepStrictEqual(
|
|
steady('a').struct(true, [true, true]).firstCycle(),
|
|
sequence('a', ['a', 'a']).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('mask()', function () {
|
|
it('Can fragment a pattern', function () {
|
|
assert.deepStrictEqual(sequence('a', 'b').mask(sequence(true, true, true)).firstCycle(), [
|
|
hap(ts(0, 0.5), ts(0, third), 'a'),
|
|
hap(ts(0, 0.5), ts(third, 0.5), 'a'),
|
|
hap(ts(0.5, 1), ts(0.5, twothirds), 'b'),
|
|
hap(ts(0.5, 1), ts(twothirds, 1), 'b'),
|
|
]);
|
|
});
|
|
it('Can mask off parts of a pattern', function () {
|
|
assert.deepStrictEqual(
|
|
sequence(['a', 'b'], 'c').mask(sequence(true, false)).firstCycle(),
|
|
sequence(['a', 'b'], silence).firstCycle(),
|
|
);
|
|
assert.deepStrictEqual(sequence('a').mask(sequence(true, false)).firstCycle(), [hap(ts(0, 1), ts(0, 0.5), 'a')]);
|
|
});
|
|
});
|
|
describe('invert()', function () {
|
|
it('Can invert a binary pattern', function () {
|
|
assert.deepStrictEqual(
|
|
sequence(true, false, [true, false]).invert().firstCycle(),
|
|
sequence(false, true, [false, true]).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('signal()', function () {
|
|
it('Can make saw/saw2', function () {
|
|
assert.deepStrictEqual(
|
|
saw.struct(true, true, true, true).firstCycle(),
|
|
sequence(1 / 8, 3 / 8, 5 / 8, 7 / 8).firstCycle(),
|
|
);
|
|
assert.deepStrictEqual(
|
|
saw2.struct(true, true, true, true).firstCycle(),
|
|
sequence(-3 / 4, -1 / 4, 1 / 4, 3 / 4).firstCycle(),
|
|
);
|
|
});
|
|
it('Can make isaw/isaw2', function () {
|
|
assert.deepStrictEqual(
|
|
isaw.struct(true, true, true, true).firstCycle(),
|
|
sequence(7 / 8, 5 / 8, 3 / 8, 1 / 8).firstCycle(),
|
|
);
|
|
assert.deepStrictEqual(
|
|
isaw2.struct(true, true, true, true).firstCycle(),
|
|
sequence(3 / 4, 1 / 4, -1 / 4, -3 / 4).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('_setContext()', () => {
|
|
it('Can set the event context', () => {
|
|
assert.deepStrictEqual(
|
|
pure('a')
|
|
._setContext([
|
|
[
|
|
[0, 1],
|
|
[1, 2],
|
|
],
|
|
])
|
|
.firstCycle(true),
|
|
[
|
|
hap(ts(0, 1), ts(0, 1), 'a', [
|
|
[
|
|
[0, 1],
|
|
[1, 2],
|
|
],
|
|
]),
|
|
],
|
|
);
|
|
});
|
|
});
|
|
describe('_withContext()', () => {
|
|
it('Can update the event context', () => {
|
|
assert.deepStrictEqual(
|
|
pure('a')
|
|
._setContext([
|
|
[
|
|
[0, 1],
|
|
[1, 2],
|
|
],
|
|
])
|
|
._withContext((c) => [
|
|
...c,
|
|
[
|
|
[3, 4],
|
|
[3, 4],
|
|
],
|
|
])
|
|
.firstCycle(true),
|
|
[
|
|
hap(ts(0, 1), ts(0, 1), 'a', [
|
|
[
|
|
[0, 1],
|
|
[1, 2],
|
|
],
|
|
[
|
|
[3, 4],
|
|
[3, 4],
|
|
],
|
|
]),
|
|
],
|
|
);
|
|
});
|
|
});
|
|
describe('apply', () => {
|
|
it('Can apply a function', () => {
|
|
assert.deepStrictEqual(sequence('a', 'b')._apply(fast(2)).firstCycle(), sequence('a', 'b').fast(2).firstCycle());
|
|
}),
|
|
it('Can apply a pattern of functions', () => {
|
|
assert.deepStrictEqual(sequence('a', 'b').apply(fast(2)).firstCycle(), sequence('a', 'b').fast(2).firstCycle());
|
|
assert.deepStrictEqual(
|
|
sequence('a', 'b').apply(fast(2), fast(3)).firstCycle(),
|
|
sequence('a', 'b').fast(2, 3).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('layer', () => {
|
|
it('Can layer up multiple functions', () => {
|
|
assert.deepStrictEqual(
|
|
sequence(1, 2, 3)
|
|
.layer(fast(2), (pat) => pat.add(3, 4))
|
|
.firstCycle(),
|
|
stack(sequence(1, 2, 3).fast(2), sequence(1, 2, 3).add(3, 4)).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('early', () => {
|
|
it('Can shift an event earlier', () => {
|
|
assert.deepStrictEqual(pure(30)._late(0.25).query(st(1, 2)), [
|
|
hap(ts(1 / 4, 5 / 4), ts(1, 5 / 4), 30),
|
|
hap(ts(5 / 4, 9 / 4), ts(5 / 4, 2), 30),
|
|
]);
|
|
});
|
|
it('Can shift an event earlier, into negative time', () => {
|
|
assert.deepStrictEqual(pure(30)._late(0.25).query(st(0, 1)), [
|
|
hap(ts(-3 / 4, 1 / 4), ts(0, 1 / 4), 30),
|
|
hap(ts(1 / 4, 5 / 4), ts(1 / 4, 1), 30),
|
|
]);
|
|
});
|
|
});
|
|
describe('off', () => {
|
|
it('Can offset a transformed pattern from the original', () => {
|
|
assert.deepStrictEqual(
|
|
pure(30).off(0.25, add(2)).firstCycle(),
|
|
stack(pure(30), pure(30).late(0.25).add(2)).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('jux', () => {
|
|
it('Can juxtapose', () => {
|
|
assert.deepStrictEqual(
|
|
pure({ a: 1 }).jux(fast(2))._sortEventsByPart().firstCycle(),
|
|
stack(pure({ a: 1, pan: 0 }), pure({ a: 1, pan: 1 }).fast(2))
|
|
._sortEventsByPart()
|
|
.firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('juxBy', () => {
|
|
it('Can juxtapose by half', () => {
|
|
assert.deepStrictEqual(
|
|
pure({ a: 1 }).juxBy(0.5, fast(2))._sortEventsByPart().firstCycle(),
|
|
stack(pure({ a: 1, pan: 0.25 }), pure({ a: 1, pan: 0.75 }).fast(2))
|
|
._sortEventsByPart()
|
|
.firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('_squeezeJoin', () => {
|
|
it('Can squeeze', () => {
|
|
assert.deepStrictEqual(
|
|
sequence('a', ['a', 'a'])
|
|
.fmap((a) => fastcat('b', 'c'))
|
|
._squeezeJoin()
|
|
.firstCycle(),
|
|
sequence(
|
|
['b', 'c'],
|
|
[
|
|
['b', 'c'],
|
|
['b', 'c'],
|
|
],
|
|
).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('ply', () => {
|
|
it('Can ply(3)', () => {
|
|
assert.deepStrictEqual(
|
|
sequence('a', ['b', 'c']).ply(3).firstCycle(),
|
|
sequence(pure('a').fast(3), [pure('b').fast(3), pure('c').fast(3)]).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('chop', () => {
|
|
it('Can _chop(2)', () => {
|
|
assert.deepStrictEqual(
|
|
sequence({ sound: 'a' }, { sound: 'b' })._chop(2).firstCycle(),
|
|
sequence(
|
|
{ sound: 'a', begin: 0, end: 0.5 },
|
|
{ sound: 'a', begin: 0.5, end: 1 },
|
|
{ sound: 'b', begin: 0, end: 0.5 },
|
|
{ sound: 'b', begin: 0.5, end: 1 },
|
|
).firstCycle(),
|
|
);
|
|
});
|
|
it('Can chop(2,3)', () => {
|
|
assert.deepStrictEqual(
|
|
pure({ sound: 'a' }).fast(2).chop(2, 3)._sortEventsByPart().firstCycle(),
|
|
sequence(
|
|
[
|
|
{ sound: 'a', begin: 0, end: 0.5 },
|
|
{ sound: 'a', begin: 0.5, end: 1 },
|
|
],
|
|
[
|
|
{ sound: 'a', begin: 0, end: 1 / 3 },
|
|
{ sound: 'a', begin: 1 / 3, end: 2 / 3 },
|
|
{ sound: 'a', begin: 2 / 3, end: 1 },
|
|
],
|
|
)
|
|
._sortEventsByPart()
|
|
.firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('range2', () => {
|
|
it('Can change the range of a bipolar pattern', () => {
|
|
assert.deepStrictEqual(
|
|
sequence(-1, -0.5, 0, 0.5).range2(1000, 1100).firstCycle(),
|
|
sequence(1000, 1025, 1050, 1075).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
describe('linger', () => {
|
|
it('Can linger on the first quarter of a cycle', () => {
|
|
assert.deepStrictEqual(
|
|
sequence(0, 1, 2, 3, 4, 5, 6, 7).linger(0.25).firstCycle(),
|
|
sequence(0, 1, 0, 1, 0, 1, 0, 1).firstCycle(),
|
|
);
|
|
});
|
|
});
|
|
});
|