/**
* Make sure that we can replace the subjects using another collection.
*/
public function testReplaceSubjects()
{
$a = new Subject();
$b = new Subject();
$c = new Subject();
$d = new Subject();
Property::set($this->collection, 'subjects', array('a' => $a));
$collection = new Collection();
Property::set($collection, 'subjects', array('b' => $b, 'c' => $c, 'd' => $d));
$this->collection->replaceSubjects($collection);
$this->assertSame(array('b' => $b, 'c' => $c, 'd' => $d), Property::get($this->collection, 'subjects'), 'The subjects should have been replaced.');
}
