1 | import * as assert from 'assert';
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2 | import test, { describe } from 'node:test';
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3 | import parse from '../parse.js';
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4 | import stringify from '../stringify.js';
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5 | import uuidv4 from '../v4.js';
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6 | function splitmix32(a) {
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7 | return function () {
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8 | a |= 0;
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9 | a = (a + 0x9e3779b9) | 0;
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10 | let t = a ^ (a >>> 16);
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11 | t = Math.imul(t, 0x21f0aaad);
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12 | t = t ^ (t >>> 15);
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13 | t = Math.imul(t, 0x735a2d97);
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14 | return ((t = t ^ (t >>> 15)) >>> 0) / 4294967296;
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15 | };
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16 | }
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17 | const rand = splitmix32(0x12345678);
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18 | function rng(bytes = new Uint8Array(16)) {
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19 | for (let i = 0; i < 16; i++) {
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20 | bytes[i] = rand() * 256;
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21 | }
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22 | return bytes;
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23 | }
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24 | describe('parse', () => {
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25 | test('String -> bytes parsing', () => {
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26 | assert.deepStrictEqual(parse('0f5abcd1-c194-47f3-905b-2df7263a084b'), Uint8Array.from([
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27 | 0x0f, 0x5a, 0xbc, 0xd1, 0xc1, 0x94, 0x47, 0xf3, 0x90, 0x5b, 0x2d, 0xf7, 0x26, 0x3a, 0x08,
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28 | 0x4b,
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29 | ]));
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30 | });
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31 | test('String -> bytes -> string symmetry for assorted uuids', () => {
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32 | for (let i = 0; i < 1000; i++) {
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33 | const uuid = uuidv4({ rng });
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34 | assert.equal(stringify(parse(uuid)), uuid);
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35 | }
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36 | });
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37 | test('Case neutrality', () => {
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38 | assert.deepStrictEqual(parse('0f5abcd1-c194-47f3-905b-2df7263a084b'), parse('0f5abcd1-c194-47f3-905b-2df7263a084b'.toUpperCase()));
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39 | });
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40 | test('Null UUID case', () => {
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41 | assert.deepStrictEqual(parse('00000000-0000-0000-0000-000000000000'), Uint8Array.from(new Array(16).fill(0)));
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42 | });
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43 | test('UUID validation', () => {
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44 | assert.throws(() => parse());
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45 | assert.throws(() => parse('invalid uuid'));
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46 | assert.throws(() => parse('zyxwvuts-rqpo-nmlk-jihg-fedcba000000'));
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47 | });
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48 | });
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