Here is what I thought was a good test:
http://www.ocdvriendenkring.org/
click on OCD test. It's in dutch, so I translated it below:
1) Did you ever have unwanted, frightening thoughts which you were unable to control? For example: worries about hygene, bacterias or hurting somebody. Did these thoughts last more than an hour??
2) When you had these thoughts, did these surpass worries about troubles in your daily life?
3) Did you try to ignore or repress the thoughts?
4) Did you feel that the thoughts were the product of your own mind? (So not the product of brainwashing or hypnosis)
5) Did you ever had unwanted rituals that you were forced to do? Like: praying, counting, repeating words in silence, washing hands, checking, putting everything in the rgith place. Did these rituals last more than an hour?
6) Were you frightened that something bad could happen if you forgot about the rituals??
7) Did you find the rituals unreasonable of yourself?
8) Did the rituals disturb your functioning in your daily life?? Did you suffer under them??
9) Did they have to do with an addiction?? For example: thinking about alcohol in an alcohol addiction, thinking about drugs in a drugaddiciton, think about gambling in a gambling addiction??
10) When you had these rituals or thoughts, were you on medication or drugs?? And did your doctor say that they caused your thoughts or rituals??
11) Right before these thoughts or rituals started, did you have mental issues?? And did your doctor say that they caused your thoughts or rituals? Example: depression, psychosis, eating disorder, etc.
12) How are you doing the last month with the thoughts or rituals??
a) completely gone.
b) it's getting better fast
c) it's getting better slowly
d) thesame
e) worsening slowly
f) worsening fast
13) How heavy were the thoughts or rituals last month??
a) mild: the symptoms did not inhibit work or social contact
b) moderate: the symptoms did inhibit work or social contact
c) severe: I had no work or social contact because of the symptoms
d) extreme: my entire life is controlled by the symptoms