Note to self. Maybe one day I will finally remember how to run a single test class in sbt. Currently, I must google that every time I need it.

When you want to run tests from a single test class using the command line (not from the sbt interactive mode), you probably write this:

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sbt testOnly name.mikulskibartosz.TestClass

This is wrong! It runs all of the tests.

The correct way of running a single test class looks like this:

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sbt "testOnly name.mikulskibartosz.TestClass"

Please remember about the quotation.