public function testDBCommand()
 {
     $x = $this->object->command((object) array());
     $this->assertEquals(0, strpos($x['errmsg'], "no such cmd"), json_encode($x));
     $this->assertEquals((bool) $x['ok'], false);
     $created = $this->object->createCollection("system.profile", true, 5000);
     $this->object->command((object) array('profile' => 0));
     $x = $this->object->command((object) array('profile' => 1));
     $this->assertEquals($x['was'], 0, json_encode($x));
     $this->assertEquals((bool) $x['ok'], true, json_encode($x));
 }