1/*
2 * Copyright (c) 2026 DataPond D-Library Pty Ltd. ("The Sanctuary")
3 * Non-Profit Public Library — The World Library
4 * 
5 * D-SAFE Certification issued by POND Enterprise.
6 * Published under the D-Open Code Sovereign Licence v1.0 framework
7 * DataPond D-Library All exclusive Right reserved on modifiying the code - CC Attribution to data pond, Non modifiable, Non Commercial.
8 * https://registry.world.bibliotech.com/licence
9 * Source code donated to DataPond D-Library by it's author: data pond.
10 * 
11 * Technical Guardian ("The Shield"): Pond Enterprise Pty Ltd. (ACN 694 747 987)
12 * All liability claims about D-SAFE certification issues coming from the published D-Safe direction must be addressed with Pond Enterprise Pty Ltd.
13 * Code Modification automatically voids the certified liability protection provided by Pond Enterprise.
14 */
15import { describe, it, expect } from 'vitest';
16import { encodePID, decodePID, base34, unbase34 } from '../pid.js';
17
18describe('pid codec', () => {
19  it('base34 correctly converts 32-bit bounds', () => {
20    expect(base34(0)).toBe('0000000');
21    expect(base34(4740)).toBe('000043E');
22  });
23
24  it('unbase34 round-trips correctly', () => {
25    const testCases = [0, 1, 100, 4740, 2147483647, 4294967295];
26    for (const wireId of testCases) {
27      const b34 = base34(wireId);
28      expect(unbase34(b34)).toBe(wireId);
29    }
30  });
31
32  it('verifies round-trip: decodePID(type, encodePID(type, wireId)).wireId === wireId', () => {
33    const testCases = [0, 1, 100, 4740, 2147483647, 4294967295];
34    for (const wireId of testCases) {
35      const encoded = encodePID('BK', wireId);
36      const decoded = decodePID('BK', encoded);
37      expect(decoded.wireId).toBe(wireId);
38    }
39  });
40
41  it('encodePID("BK", 4740) starts with "BK000043E"', () => {
42    const encoded = encodePID('BK', 4740);
43    expect(encoded.startsWith('BK000043E')).toBe(true);
44    expect(encoded.length).toBe(10);
45  });
46
47  it('no encoded PID contains "I" or "O" at position 9 (the check char)', () => {
48    let foundIOrO = false;
49    for (let i = 0; i < 10000; i++) {
50      const encoded = encodePID('BK', i);
51      const check = encoded[9];
52      if (check === 'I' || check === 'O') {
53        foundIOrO = true;
54      }
55    }
56    expect(foundIOrO).toBe(false);
57  });
58});
59