public function testGetInternalIterator()
{
$data = array('bar1', 'bar2', 'bar3');
$col = new PropelCollection($data);
$it1 = $col->getInternalIterator();
$it2 = $col->getINternalIterator();
$this->assertSame($it1, $it2, 'getInternalIterator() returns always the same iterator');
$col->getInternalIterator()->next();
$this->assertEquals('bar2', $col->getInternalIterator()->current(), 'getInternalIterator() returns always the same iterator');
}