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✏️ Editing: GenericTimeConverterTest.php

<?php

declare(strict_types=1);

namespace Ramsey\Uuid\Test\Converter\Time;

use Ramsey\Uuid\Converter\Time\GenericTimeConverter;
use Ramsey\Uuid\Math\BrickMathCalculator;
use Ramsey\Uuid\Test\TestCase;
use Ramsey\Uuid\Type\Hexadecimal;

class GenericTimeConverterTest extends TestCase
{
    /**
     * @param numeric-string $seconds
     * @param numeric-string $microseconds
     * @param non-empty-string $expected
     *
     * @dataProvider provideCalculateTime
     */
    public function testCalculateTime(string $seconds, string $microseconds, string $expected): void
    {
        $calculator = new BrickMathCalculator();
        $converter = new GenericTimeConverter($calculator);

$result = $converter->calculateTime($seconds, $microseconds);

$this->assertSame($expected, $result->toString());
    }

/**
     * @return array<array{seconds: numeric-string, microseconds: numeric-string, expected: non-empty-string}>
     */
    public function provideCalculateTime(): array
    {
        return [
            [
                'seconds' => '-12219146756',
                'microseconds' => '0',
                'expected' => '000001540901e600',
            ],
            [
                'seconds' => '103072857659',
                'microseconds' => '999999',
                'expected' => '0fffffffff9785f6',
            ],
            [
                'seconds' => '1578612359',
                'microseconds' => '521023',
                'expected' => '01ea333764c71df6',
            ],

// This is the earliest possible date supported by v1 UUIDs:
            // 1582-10-15 00:00:00.000000
            [
                'seconds' => '-12219292800',
                'microseconds' => '0',
                'expected' => '0000000000000000',
            ],

// This is the last possible time supported by the GenericTimeConverter:
            // 60038-03-11 05:36:10.955161
            // When a UUID is created from this time, however, the highest 4 bits
            // are replaced with the version (1), so we lose fidelity and cannot
            // accurately decompose the date from the UUID.
            [
                'seconds' => '1832455114570',
                'microseconds' => '955161',
                'expected' => 'fffffffffffffffa',
            ],

// This is technically the last possible time supported by v1 UUIDs:
            // 5236-03-31 21:21:00.684697
            // All dates above this will lose fidelity, since the highest 4 bits
            // are replaced with the UUID version (1). As a result, we cannot
            // accurately decompose the date from UUIDs created from dates
            // greater than this one.
            [
                'seconds' => '103072857660',
                'microseconds' => '684697',
                'expected' => '0ffffffffffffffa',
            ],
        ];
    }

/**
     * @param numeric-string $unixTimestamp
     * @param numeric-string $microseconds
     *
     * @dataProvider provideConvertTime
     */
    public function testConvertTime(Hexadecimal $uuidTimestamp, string $unixTimestamp, string $microseconds): void
    {
        $calculator = new BrickMathCalculator();
        $converter = new GenericTimeConverter($calculator);

$result = $converter->convertTime($uuidTimestamp);

$this->assertSame($unixTimestamp, $result->getSeconds()->toString());
        $this->assertSame($microseconds, $result->getMicroseconds()->toString());
    }

/**
     * @return array<array{uuidTimestamp: Hexadecimal, unixTimestamp: numeric-string, microseconds: numeric-string}>
     */
    public function provideConvertTime(): array
    {
        return [
            [
                'uuidTimestamp' => new Hexadecimal('1e1c57dff6f8cb0'),
                'unixTimestamp' => '1341368074',
                'microseconds' => '491000',
            ],
            [
                'uuidTimestamp' => new Hexadecimal('1ea333764c71df6'),
                'unixTimestamp' => '1578612359',
                'microseconds' => '521023',
            ],
            [
                'uuidTimestamp' => new Hexadecimal('fffffffff9785f6'),
                'unixTimestamp' => '103072857659',
                'microseconds' => '999999',
            ],

// This is the last possible time supported by v1 UUIDs. When
            // converted to a Unix timestamp, the microseconds are lost.
            // 60038-03-11 05:36:10.955161
            [
                'uuidTimestamp' => new Hexadecimal('fffffffffffffffa'),
                'unixTimestamp' => '1832455114570',
                'microseconds' => '955161',
            ],

// This is the earliest possible date supported by v1 UUIDs:
            // 1582-10-15 00:00:00.000000
            [
                'uuidTimestamp' => new Hexadecimal('000000000000'),
                'unixTimestamp' => '-12219292800',
                'microseconds' => '0',
            ],

// This is the Unix epoch:
            // 1970-01-01 00:00:00.000000
            [
                'uuidTimestamp' => new Hexadecimal('1b21dd213814000'),
                'unixTimestamp' => '0',
                'microseconds' => '0',
            ],
        ];
    }
}

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