Testing Certificates

Hello, I am having trouble testing if the certificates created are actually working. I am using JRadiusSimulator to test if the certificates work. I can get an access-accept when I input the correct the correct user name and password and the Radius server IP address and password. There is also a Keys tab on the JRadiusSimulator to input the client certificate and root certificate. When I put the wrong or right path and password for the certificates I still get an access-accept from the debugger. My question is how do I test the certificates created with RADIUS. Thank you