1import { bjorklund } from '../euclid.mjs';
2import { describe, expect, it } from 'vitest';
3import { fastcat } from '../pattern.mjs';
4
5describe('bjorklund', () => {
6  it('should apply bjorklundlund to ons and steps', () => {
7    expect(bjorklund(3, 8)).toStrictEqual([1, 0, 0, 1, 0, 0, 1, 0]);
8    expect(bjorklund(-3, 8)).toStrictEqual([0, 1, 1, 0, 1, 1, 0, 1]);
9    expect(bjorklund(8, 8)).toStrictEqual([1, 1, 1, 1, 1, 1, 1, 1]);
10    expect(bjorklund(-8, 8)).toStrictEqual([0, 0, 0, 0, 0, 0, 0, 0]);
11    expect(bjorklund(5, 8)).toStrictEqual([1, 0, 1, 1, 0, 1, 1, 0]);
12  });
13});
14
15describe('euclid', () => {
16  it('Can create euclid', () => {
17    expect(
18      fastcat('a')
19        .euclid(3, 8)
20        .firstCycle()
21        .sort((a, b) => a.part.begin.sub(b.part.begin))
22        .map((a) => a.showWhole(true)),
23    ).toStrictEqual(['0/1 → 1/8: a', '3/8 → 1/2: a', '3/4 → 7/8: a']);
24    expect(
25      fastcat('a')
26        .euclid(5, 8)
27        .firstCycle()
28        .sort((a, b) => a.part.begin.sub(b.part.begin))
29        .map((a) => a.showWhole(true)),
30    ).toStrictEqual(['0/1 → 1/8: a', '1/4 → 3/8: a', '3/8 → 1/2: a', '5/8 → 3/4: a', '3/4 → 7/8: a']);
31  });
32});
33
34describe('euclidRot', () => {
35  it('Can create euclidRot', () => {
36    expect(
37      fastcat('a')
38        .euclidRot(3, 8, 2)
39        .firstCycle()
40        .sort((a, b) => a.part.begin.sub(b.part.begin))
41        .map((a) => a.showWhole(true)),
42    ).toStrictEqual(['0/1 → 1/8: a', '1/4 → 3/8: a', '5/8 → 3/4: a']);
43    expect(
44      fastcat('a')
45        .euclidRot(5, 8, 2)
46        .firstCycle()
47        .sort((a, b) => a.part.begin.sub(b.part.begin))
48        .map((a) => a.showWhole(true)),
49    ).toStrictEqual(['0/1 → 1/8: a', '1/4 → 3/8: a', '1/2 → 5/8: a', '5/8 → 3/4: a', '7/8 → 1/1: a']);
50  });
51});
52
53describe('euclidLegato', () => {
54  it('Can create euclidLegato', () => {
55    expect(
56      fastcat('a')
57        .euclidLegato(3, 8)
58        .firstCycle()
59        .sort((a, b) => a.part.begin.sub(b.part.begin))
60        .map((a) => a.showWhole(true)),
61    ).toStrictEqual(['0/1 → 3/8: a', '3/8 → 3/4: a', '3/4 → 1/1: a']);
62    expect(
63      fastcat('a')
64        .euclidLegato(5, 8)
65        .firstCycle()
66        .sort((a, b) => a.part.begin.sub(b.part.begin))
67        .map((a) => a.showWhole(true)),
68    ).toStrictEqual(['0/1 → 1/4: a', '1/4 → 3/8: a', '3/8 → 5/8: a', '5/8 → 3/4: a', '3/4 → 1/1: a']);
69  });
70});
71
72describe('euclidLegatoRot', () => {
73  it('Can create euclidLegatoRot', () => {
74    expect(
75      fastcat('a')
76        .euclidLegatoRot(3, 8, 2)
77        .firstCycle()
78        .sort((a, b) => a.part.begin.sub(b.part.begin))
79        .map((a) => a.showWhole(true)),
80    ).toStrictEqual(['0/1 → 1/4: a', '1/4 → 5/8: a', '5/8 → 1/1: a']);
81    expect(
82      fastcat('a')
83        .euclidLegatoRot(5, 8, 2)
84        .firstCycle()
85        .sort((a, b) => a.part.begin.sub(b.part.begin))
86        .map((a) => a.showWhole(true)),
87    ).toStrictEqual(['0/1 → 1/4: a', '1/4 → 1/2: a', '1/2 → 5/8: a', '5/8 → 7/8: a', '7/8 → 1/1: a']);
88  });
89});