public function testExpire()
{
$cc = new ConcurrencyCheck('CCUnitTest', self::$users['user1']->user);
$cc->setExpirationTime(-1);
$cc->checkout(1338);
// these numbers are test record ids.
$cc->checkout(1339);
$cc->setExpirationTime();
$cc->checkout(13310);
// tests
$this->assertEquals(2, $cc->expire(), "Resource expiration");
$this->assertTrue($cc->checkin(13310), "Checkin succeeds after expiration");
}
