So, I am trying to test a laptop hdd in a computer I have to see if it's working, the computer doesn't have any place to mount the hdd cause computer case sucks. So can I just leave the hard drive in the case for a min while I test it?
If there is exposed circuit board on one side, lay it on the metal top.
You typically don't want to move a HDD while spinning. Most laptop drives have features that pull the head away when it detects movement/shock, but no point in pressing your luck on that.