Put somebody/something to the test
Definition 1 of 2
Pro Tip 1/3Real Conditions
Use it when someone's ability is tested in a real situation, not just theoretically. 
Volunteering in a crisis zone put her nursing skills to the test.
Pro Tip 2/3Unexpected Challenges
Often involves facing challenges that were not anticipated to see how one copes. 
The sudden blackout put the new security system to the test.
Pro Tip 3/3Capability Revelation
Helps reveal the true capabilities or effectiveness of a person or thing. 
The final project will put your research abilities to the test.