Typical ADHD tests focus on negative traits of the wiring, like running late and being disorganized. The Adult ADHD Spectrum Self Test is designed it to help you assess the full spectrum of ADHD traits, including both strengths and challenges.
The Aspergers Test Site is devoted to helping anyone who suspects they have Asperger's or HFA. If the answer comes back yes, speak to your MD. Official diagnosis must be carried out by a trained medical professional (usually either a Clinical Psychologist or Psychiatrist)