public function testSet()
{
$col = new Collection();
$col->set(4, 'bar');
$this->assertEquals(array(4 => 'bar'), $col->getData(), 'set() adds an element to the collection with a key');
$col = new Collection();
$col->set(null, 'foo');
$col->set(null, 'bar');
$this->assertEquals(array('foo', 'bar'), $col->getData(), 'set() adds an element to the collection without a key');
}
