How do i declare a dependency on a module's test code?

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I’d use this, which is slightly different:

configurations {
    testArtifacts.extendsFrom testRuntime
}
task testJar(type: Jar) {
    classifier "test"
    from sourceSets.test.output
}
artifacts {
    testArtifacts testJar
}

Without ‘testArtifacts.extendsFrom testRuntime’ you won’t get the dependencies of the tests if there are any.

Neither IDEA or Eclipse have the concept of a dependency on tests of a module. Luckily, module dependencies include visibility to any test source defined in that module. Both of the Gradle IDE plugins, will interpret the above code as a plain module dependency (i.e. just like ‘project(":some-project")’) which is pretty much what you want.

You have to be careful about dependency cycles though. You can easily have a situation where you do not have a cycle in the Gradle build, but due to the decreased granularity in the IDE you do have a cycle.

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