[Test] itemLabel function from Repeater

class LineItemPieceIdGeneratorTest extends TestCase
{
    public function testLineItemPieceIdGenerator()
    {
        
        // Create a new ComponentContainer instance.
        $container = ComponentContainer::make();

        // Assign a schema of components to the container.
        $container->schema([
            Repeater::make('line_items')
                ->schema([
                    Repeater::make('pieces')
                        ->itemLabel(fn (ComponentContainer $container, $state) => LineItemPieceIdGenerator::make()->handle($container, $state))
                        ->schema([
                            TextInput::make('line_items.piece_id')
                        ])

                ])
        ]);