Cannot run test file in IDEA 2021.1

[mr-git]

When attempting to run unit-test file TestSpec like described in https://scalameta.org/munit/docs/getting-started.html#run-tests-in-intellij, IDEA shows red error message, like:

Error running 'TestSpec':
com/intellij/rt/junit/JUnitStarter

When run from SBT with test or testOnly *TestSpec* - all works as expected.

Maybe latest IDEA changed something in unit-test starter?

[olafurpg]

Thank you for reporting! This looks like an IntelliJ regression since nothing changed on the MUnit side. Can you report to YouTrack instead?

[mr-git]

done: https://youtrack.jetbrains.com/issue/SCL-18912

[mr-git]

it was not obvious - JUnit plugin has to be enabled for this to work.

It might be good to amend the web-site to mention that plugin must be enabled.
To speed up loading of IDEA, I've disabled all non-required plugins, somehow ScalaTest tests were working just find without it, I guess support for them is embedded in Scala plugin