class BatchUpdateItemsController extends Controller
{
    public function update(Request $request)
    {
        $file = $request->file('file');

        $batchImport = new BatchUpdateItems($file);
        $status = $batchImport->update();

public function update()
{
    $this->data = Excel::load($this->data->getRealPath())->get()->toArray();

if (!Storage::exists('batchImportTestAllLocalized.xlsx')) {
    $this->fail('batchImportTestAllLocalized.xlsx cannot be found');
}
$data = Excel::load('batchImportTestAllLocalized.xlsx', function($reader) {})->get();