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javaspringjunitadoptopenjdk

Unable to debug Junit test anywhere

I tried debugging a junit test in STS (Spring Tool Suite).

When I try to perform 'step-into' in any method of the class under test object I get

com.sun.jdi.InternalException: Got error code in reply:35 occurred retrieving 'this' from stack frame.

When I do the same in IntelliJ IDEA I get

'this' is not available.

I tried everything from Using the Eclipse remote debugger throws com.sun.jdi.InternalException but nothing turns out to be useful.

I installed java using

brew cask install adoptopenjdk8.

STS version is 4.7.0.RELEASE

IntelliJ IDEA Version is 2020.1.2

JUnit version is 4.13

Solution

  • Finally after a lot of debugging and isolating all tools I found that the culprit was

    mock-maker-inline

    which I added in project's src/test/resources/mockito-extensions directory to mock final classes (ref: https://www.baeldung.com/mockito-final).

    Please feel free to comment any better way where I don't have to add that line and still can mock final classes + won't get that exception.