How to debug integration test in IntelliJ?

Question

I have created run configuration in Maven Projects for

mvn -Dit.test=PredictionWorkflowTest verify

which looks like here

and then set breakpoint inside PredictionWorkflowTest. Unfortunately, when I right click this configuration and select to debug it, tests passes as if no breakpoint were set.

How to make breakpoints working?

If I run test by clicking class itself, then breakpoints trigger, but integration conditions don't me (servers not starting).

Answer 1

Step 1: Add debug to maven run configuration

You are probably using Maven Failsafe Plugin to run the tests as explained in their documentation

If that's the case you need to add -Dmaven.failsafe.debug (documentation here) to your maven configuration so it becomes

mvn -Dit.test=PredictionWorkflowTest verify -Dmaven.failsafe.debug

When you run this maven command, the debugger will be listening at port 5005 by default

Step 2: Configure remote debugger in IntelliJ

Now in IntelliJ you need to configure a remote debugger configuration on localhost and port 5005

Step 3: Debug your app

Finally, run the maven command. Just before testing it will stop and wait for the debugger to start running the tests. The following message will be displayed in the terminal

Listening for transport dt_socket at address: 5005

Then start remote debugger configured in step 2. This should allow you to debug your app on integration tests break-points.