19 declare(strict_types=1);
    31         $set1 = $this->createMock(ilFileValidationSetHandler::class);
    32         $set2 = $this->createMock(ilFileValidationSetHandler::class);
    33         $set3 = $this->createMock(ilFileValidationSetHandler::class);
    34         $sets = [$set1, $set2, $set3];
    36         $collection = (
new ilFileValidationSetCollection())
    41         $this->assertCount(3, $collection);
    42         for ($i = 0; $i < 3; $i++) {
    43             $sets[$i] = $collection->toArray()[$i];