public function testIsOdd()
{
$col = new PropelCollection();
$this->assertFalse($col->isOdd(), 'isOdd() returns false on an empty collection');
$data = array('bar1', 'bar2', 'bar3');
$col = new PropelCollection();
$col->setData($data);
foreach ($col as $key => $value) {
$this->assertEquals((bool) ($key % 2), $col->isOdd(), 'isOdd() returns true only when the key is odd');
}
}