|Dotfuscator > Understanding Instrumentation with Dotfuscator > Instrumentation Injection > Testing and Debugging Applications with Application Analytics|
Once the application has been run through Dotfuscator, the Application Analytics functionality is ready to be tested. When the PreEmptive Analytics instrumented application is started and stopped, or when an attributed feature is used, the appropriate messages should be sent to the hosted service. There are several ways to verify that the correct messages are sent at the correct times. This section discusses client side and server side verification techniques.