<?php

namespace Tests\Unit;

use App\Support\CheckedPattern;
use App\Support\StructuredData;
use Illuminate\Support\Collection;
use PHPUnit\Framework\TestCase;
use UnexpectedValueException;

class StructuredDataTest extends TestCase
{
    public function test_collection_normalisation_preserves_keys_and_object_identity(): void
    {
        $row = (object) ['id' => 7];
        $items = StructuredData::collectionItems(new Collection(['row' => $row]));
        self::assertSame(['row' => $row], $items);
        self::assertSame($row, $items['row']);
        $generator = (static function () use ($row) {
            yield 'row' => $row;
        })();
        self::assertSame(['row' => $row], StructuredData::collectionItems($generator));
    }

    public function test_invalid_scalar_cannot_be_recovered_as_an_empty_collection(): void
    {
        $this->expectException(UnexpectedValueException::class);
        StructuredData::collectionItems('invalid structured snapshot');
    }

    public function test_invalid_unicode_fails_without_overwriting_the_source(): void
    {
        $source = "original\xFF";
        try {
            CheckedPattern::split('/\s+/u', $source);
            self::fail('Malformed text must not be accepted as an empty result.');
        } catch (\RuntimeException) {
            self::assertSame("original\xFF", $source);
        }
    }
}