The athletes knew that tournament officials would be 'testing for' (the presence of) illegal drugs.
Her class served as a 'testing ground' [='proving ground'] for new teaching methods.
You're 'testing' my patience. [=you are starting to make me annoyed or upset]
(..) Diagnose, test. Medical interns... You got a stain. ...we're the chess club. I just have bad gas. What are you testing me for? To see if your gas could be harmful to others. He's just scared. Talk to him. Look, Mr Burski, I heard a systolic murmur in your heart, (..)2001 TvShow: Scrubs Title: My First Day Season: 1 Episode 1