Hi, having done PG in Clinical Psychology, we had dealt with testing. Tests are the most misused, the least understood, yet the most valuable sources of information. We can say that tests are a sample of an aspect of an individual's behavior, performance, or attitude. The tests mentioned here are widely used.
16 PF is a personality test where an individual is scored on 16 personality factors. It's developed by Cattell. Also, there are other personality tests such as the Thematic Apperception Test, Rorschach Inkblot Test, etc.
In addition to this, there are several tests such as Achievement Tests, Interest Tests, Aptitude Tests. You can refer to "Psychological Testing" by Anne Anastasi and Susana Urbina.
If you need any further help, you can ask.