mirror of
https://github.com/eliasstepanik/strudel-docker.git
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550 lines
18 KiB
JavaScript
550 lines
18 KiB
JavaScript
import Fraction from 'fraction.js'
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import { 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 '../strudel.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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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(
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ev3, new Hap(ts(0,1),ts(0,1),11,{},false)
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)
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assert.deepStrictEqual(
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state3, {incrementme: 12}
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)
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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(pure(3).fmap(x => x + 4).firstCycle()[0].value, 7)
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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('union()', function () {
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it('Can union things', function () {
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assert.deepStrictEqual(pure({a: 4, b: 6}).union(pure({c: 7})).firstCycle()[0].value, {a: 4, b: 6, c: 7})
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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(stack(pure("a"), pure("b"), pure("c")).firstCycle().map(h => h.value), ["a", "b", "c"])
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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(pure("a").fast(sequence(1,4)).firstCycle(), stack(pure("a").fast(sequence(1,silence)), sequence(silence, ["a","a"])).firstCycle())
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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(pure("a")._slow(2).firstCycle()[0], new Hap(new TimeSpan(Fraction(0),Fraction(2)), new TimeSpan(Fraction(0), Fraction(1)), "a"))
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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(
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pat.query(st(0,1))[1],
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hap(ts(0.5,1.5), ts(1/2,1), "eb3")
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)
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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(pure(true)._filterValues(x => x).firstCycle().length, 1)
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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(pure("a").when(pure(true), x => x._fast(2)).firstCycle().length, 2)
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})
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it('Never faster', function () {
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assert.equal(pure("a").when(pure(false), x => x._fast(2)).firstCycle().length, 1)
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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(fastcat(pure("a"), pure("b")).firstCycle().map(x => x.value), ["a", "b"])
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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(slowcat("a", "b").firstCycle().map(x => x.value), ["a"])
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assert.deepStrictEqual(slowcat("a", "b")._early(1).firstCycle().map(x => x.value), ["b"])
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assert.deepStrictEqual(slowcat("a", slowcat("b", "c"))._early(1).firstCycle().map(x => x.value), ["b"])
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assert.deepStrictEqual(slowcat("a", slowcat("b", "c"))._early(3).firstCycle().map(x => x.value), ["c"])
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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(fastcat("a","b","c").rev().firstCycle().sort((a,b) => a.part.begin.sub(b.part.begin)).map(a => a.value), ["c", "b","a"])
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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"),
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sequence("d","e","d","e","d","e")
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).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").every(3, x => x._fast(2))._fast(3).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 pattern', function() {
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assert.deepStrictEqual(
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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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)
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assert.deepStrictEqual(
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pure("a").struct(sequence(true, [true,false], true)).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").struct(sequence(true, [true,false], true).invert()).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").struct(sequence(true, [true,silence], true)).firstCycle(),
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sequence("a", ["a", silence], "a").firstCycle(),
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)
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})
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})
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describe('mask()', function() {
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it('Can fragment a pattern', function() {
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assert.deepStrictEqual(
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sequence("a", "b").mask(sequence(true, true, true)).firstCycle(),
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[hap(ts(0, 0.5), ts(0,third), "a"),
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hap(ts(0, 0.5), ts(third, 0.5), "a"),
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hap(ts(0.5, 1), ts(0.5, twothirds), "b"),
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hap(ts(0.5, 1), ts(twothirds, 1), "b")
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]
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)
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})
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it('Can mask off parts of a pattern', function() {
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assert.deepStrictEqual(
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sequence(["a", "b"], "c").mask(sequence(true, false)).firstCycle(),
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sequence(["a","b"], silence).firstCycle()
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)
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assert.deepStrictEqual(
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sequence("a").mask(sequence(true, false)).firstCycle(),
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[hap(ts(0,1),ts(0,0.5), "a")]
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)
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})
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})
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describe('invert()', function() {
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it('Can invert a binary pattern', function() {
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assert.deepStrictEqual(
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sequence(true, false, [true, false]).invert().firstCycle(),
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sequence(false, true, [false, true]).firstCycle()
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)
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})
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})
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describe('signal()', function() {
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it('Can make saw/saw2', function() {
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assert.deepStrictEqual(
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saw.struct(true,true,true,true).firstCycle(),
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sequence(1/8,3/8,5/8,7/8).firstCycle()
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)
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assert.deepStrictEqual(
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saw2.struct(true,true,true,true).firstCycle(),
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sequence(-3/4,-1/4,1/4,3/4).firstCycle()
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)
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})
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it('Can make isaw/isaw2', function() {
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assert.deepStrictEqual(
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isaw.struct(true,true,true,true).firstCycle(),
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sequence(7/8,5/8,3/8,1/8).firstCycle()
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)
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assert.deepStrictEqual(
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isaw2.struct(true,true,true,true).firstCycle(),
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sequence(3/4,1/4,-1/4,-3/4).firstCycle()
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)
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})
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})
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describe('_setContext()', () => {
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it('Can set the event context', () => {
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assert.deepStrictEqual(
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pure("a")._setContext([[[0,1],[1,2]]]).firstCycle(true),
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[hap(ts(0,1),
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ts(0,1),
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"a",
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[[[0,1],[1,2]]]
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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('_withContext()', () => {
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it('Can update the event context', () => {
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assert.deepStrictEqual(
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pure("a")._setContext([[[0,1],[1,2]]])._withContext(c => [...c,[[3,4],[3,4]]]).firstCycle(true),
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[hap(ts(0,1),
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ts(0,1),
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"a",
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[[[0,1],[1,2]],[[3,4],[3,4]]]
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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("apply", () => {
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it('Can apply a function', () => {
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assert.deepStrictEqual(
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sequence("a", "b")._apply(fast(2)).firstCycle(),
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sequence("a", "b").fast(2).firstCycle()
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)
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}),
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it('Can apply a pattern of functions', () => {
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assert.deepStrictEqual(
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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()
|
|
)
|
|
})
|
|
})
|
|
})
|