/**
* @test
* @group metadata
* @group contactperson
*/
public function the_index_of_an_email_address_can_be_retrieved()
{
$emailOne = new EmailAddress('*****@*****.**');
$emailTwo = new EmailAddress('*****@*****.**');
$notInList = new EmailAddress('*****@*****.**');
$list = new EmailAddressList(array($emailOne, $emailTwo));
$this->assertEquals(0, $list->indexOf($emailOne));
$this->assertEquals(1, $list->indexOf($emailTwo));
$this->assertEquals(-1, $list->indexOf($notInList), 'An element not in the list must have an index of -1');
}
