Digma makes my tests fail (Mockito)

[black-snow]

Describe the bug
I started with a green test suite.
I installed digma and ran the test suite.
Some tests suddenly fail with:

org.mockito.exceptions.base.MockitoException:
Mockito cannot mock this class: class de.workxl.contentserver.torque.RfqPeer.

If you're not sure why you're getting this error, please open an issue on GitHub.

So I disabled the Digma plugin, restarted IDEA and ran it again. Still failing. Stopped the containers - still failing.
It took me a moment to realize that Digma edited my Run Configurations (without telling me) and added some java tooling options. I deleted them and my tests are green again.

To Reproduce
Sadly, I'm not quite sure. Some tests using Mockito (4.11.0) still work with Digma enabled, others don't.

Expected behavior

• previously green tests should not turn red when Digma is enabled
• shouldn't change my run configs without telling me - maybe clone it or at least show me a hint

Screenshots
Can make some if required.

Plugin version
2.0.187+232

Additional context
It's an old java 8 project using ant.

[doppleware]

Hi! We found this issue with a few other users, there is an easy solution to it luckily.
We'll add specific documentation since you're the fourth person to encounter it :)

From the thread:
"I got some feedback from OTEL.
and seems that need to disable some ability of OTEL in order for it to work.
can you please try the following
assuming you're using Gradle (kotlin) please add the following to the gradle build file (build.gradle.kts)
tasks.test {
systemProperties(Pair("otel.javaagent.experimental.field-injection.enabled", "false"))
}
if you're using Gradle groovy (build.gradle) so please add the following:
test {
systemProperty 'otel.javaagent.experimental.field-injection.enabled', 'false'
}"

Let me know if this solves your issue!

[black-snow]

Thanks @doppleware

Setting -Dotel.javaagent.experimental.field-injection.enabled=false helps - maybe the default should then be not to use experimental features?

[doppleware]

Yes we will make that recommendation to the OTEL team, in the meantime, we are considering setting this flag ourselves on any run if Digma observability is enabled.
digma-ai/digma-intellij-plugin#1267