public function testIsJoin()
 {
     $crit = new Criteria();
     $this->assertFalse($crit->isJoin());
     $this->assertTrue($crit->setFetchmode(Fetchmode::join('PersonJob'))->isJoin());
     $crit->fetchmode = array();
     $this->assertFalse($crit->isJoin());
     $this->assertFalse($crit->setFetchmode(Fetchmode::select('PersonJob'))->isJoin());
 }