I think LayerDependencyRulesWithRunnerTest.java is missing a ".check( classes )"

[md42]

without the ".check( classes )" it is not acutally testing what one might think

[codecholeric]

I think this should work as intended? The JUnit support actually takes care of calling check(classes) under the hood.
Did you maybe try to run the test using Gradle, but missed adding -Pexample to activate the @Category(Example.class)?
If so, there is an open issue #30, so in the near future, there should be a really straight forward example project 😃 (I just need to find the time...)
Anyway, if you start writing new tests with JUnit, then @RunWith(..) + @AnalyzeClasses(..) + ArchRule fields annotated with @ArchTest is enough, you can write tests exactly like in the example you mention, and they should be automatically checked against the classes specified in @AnalyzeClasses.
Does this work for you?

[codecholeric]

Can you give me an update on this, is this really an issue?

[md42]

Sorry for the late reply..
Checked the LayerDependencyRulesWithRunnerTest and it works as expected.
I think this is not a Bug.

I was using JUnit4 style in another test with method definition and forgot to call "check" method

[codecholeric]

Ah, okay, glad to hear it. I think I know what you mean, it can be confusing, that you have to treat @ArchTest methods different than fields. The only other way would have been, to use the return value of the method, but in that case, you can use a field anyway, I guess...
Anyway, I'm happy there is no bug 😉