function testCachingByUserName()
{
$dao = new MockUserDao($this);
$dar = new MockDataAccessResult($this);
$dao->setReturnReference('searchByUserName', $dar);
$dar->setReturnValueAt(0, 'getRow', array('user_name' => 'user_123', 'user_id' => 123));
$dar->setReturnValueAt(1, 'getRow', false);
$dao->expectOnce('searchByUserName', array('user_123'));
$user123 = new MockUser($this);
$user123->setReturnValue('getId', 123);
$user123->setReturnValue('getUserName', 'user_123');
$user456 = new MockUser($this);
$user456->setReturnValue('getId', 456);
$user456->setReturnValue('getUserName', 'user_456');
$um = new UserManagerTestVersion($this);
$um->setReturnReference('getUserInstanceFromRow', $user123, array(array('user_name' => 'user_123', 'user_id' => 123)));
$um->setReturnReference('getUserInstanceFromRow', $user456, array(array('user_name' => 'user_456', 'user_id' => 456)));
$um->setReturnReference('getDao', $dao);
$user_1 = $um->getUserByUserName('user_123');
$user_2 = $um->getuserByUserName('user_123');
$this->assertReference($user_1, $user_2);
}
