/**
* @param Collection $collection
* @depends testAdd
*/
public function testAddIsStrict(Collection $collection)
{
$expected = $collection->toArray();
array_push($expected, 10, (string) 10);
$collection->add(10, true)->add(10, true)->add((string) 10, true);
$this->assertSame($expected, $collection->toArray());
}