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| 1 | <?php |
| 2 | |
| 3 | // ╔════════════════════════════════════════════════════════════╗ |
| 4 | // ║ MIT Licence (#Expat) - https://opensource.org/licenses/MIT ║ |
| 5 | // ║ Copyright 2026 Frederic Poeydomenge <dyno@phexium.com> ║ |
| 6 | // ╚════════════════════════════════════════════════════════════╝ |
| 7 | |
| 8 | declare(strict_types=1); |
| 9 | |
| 10 | pest()->group('unit'); |
| 11 | |
| 12 | use AppDemo\Library\Domain\Exception\InvalidIsbnException; |
| 13 | use AppDemo\Library\Domain\ISBN; |
| 14 | use Tests\Phexium\Fake\Domain\StringValueObject as FakeValueObject; |
| 15 | |
| 16 | describe('Creation', function (): void { |
| 17 | it('creates an ISBN-13 using static factory method', function (): void { |
| 18 | $isbn = ISBN::fromString('9780134494166'); |
| 19 | |
| 20 | expect($isbn->getValue())->toBe('9780134494166') |
| 21 | ->and($isbn->jsonSerialize())->toBe('9780134494166') |
| 22 | ->and($isbn->getFormattedValue())->toBe('978-013-449416-6') |
| 23 | ->and((string) $isbn)->toBe('978-013-449416-6') |
| 24 | ; |
| 25 | }); |
| 26 | |
| 27 | it('normalizes by removing non-digit characters', function (): void { |
| 28 | $isbn = ISBN::fromString('978-0-13-449416-6'); |
| 29 | |
| 30 | expect($isbn->getValue())->toBe('9780134494166'); |
| 31 | }); |
| 32 | |
| 33 | it('accepts valid ISBN-13 with checksum digit 10 becoming 0', function (): void { |
| 34 | $isbn = ISBN::fromString('9783161484100'); |
| 35 | |
| 36 | expect($isbn->getValue())->toBe('9783161484100'); |
| 37 | }); |
| 38 | }); |
| 39 | |
| 40 | describe('Equality', function (): void { |
| 41 | it('considers two ISBNs with same value as equal', function (): void { |
| 42 | $isbn1 = ISBN::fromString('9780134494166'); |
| 43 | $isbn2 = ISBN::fromString('978-0-13-449416-6'); |
| 44 | |
| 45 | expect($isbn1->equals($isbn2))->toBeTrue(); |
| 46 | }); |
| 47 | |
| 48 | it('considers two ISBNs with different values as not equal', function (): void { |
| 49 | $isbn1 = ISBN::fromString('9780134494166'); |
| 50 | $isbn2 = ISBN::fromString('9781737519799'); |
| 51 | |
| 52 | expect($isbn1->equals($isbn2))->toBeFalse(); |
| 53 | }); |
| 54 | |
| 55 | it('considers an ISBN and another value object as not equal', function (): void { |
| 56 | $isbn = ISBN::fromString('9780134494166'); |
| 57 | $object = FakeValueObject::fromString('9780134494166'); |
| 58 | |
| 59 | expect($isbn->equals($object))->toBeFalse(); |
| 60 | }); |
| 61 | }); |
| 62 | |
| 63 | describe('Validation', function (): void { |
| 64 | it('throws exception for empty ISBN', function (): void { |
| 65 | expect(fn (): ISBN => ISBN::fromString('')) |
| 66 | ->toThrow(InvalidIsbnException::class, 'ISBN cannot be empty') |
| 67 | ; |
| 68 | }); |
| 69 | |
| 70 | it('throws exception for invalid ISBN-13', function (): void { |
| 71 | expect(fn (): ISBN => ISBN::fromString('1234567890123')) |
| 72 | ->toThrow(InvalidIsbnException::class, 'Invalid ISBN-13 checksum') |
| 73 | ; |
| 74 | }); |
| 75 | }); |