configure mockito agent

[yannicklamprecht]

Addresses issues with newer Java versions and Mockito.

• https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html#0.3
• https://openjdk.org/jeps/451

[electronicboy]

maybe somebody more in-tune with gradle will flag this, but, this LGTM

[jpenilla]

This should use a CommandLineArgumentProvider to avoid resolving dependencies during configuration time - I think there are some other spots that may need to change in this direction too, for example stuff used by Javadoc, but it would be better to not increase the tech debt here.

[yannicklamprecht]

This should use a CommandLineArgumentProvider to avoid resolving dependencies during configuration time - I think there are some other spots that may need to change in this direction too, for example stuff used by Javadoc, but it would be better to not increase the tech debt here.

Hopefully addressed that to your liking.

[jpenilla]

It should be something like this

abstract class MockitoAgentProvider : CommandLineArgumentProvider {
  @get:InputFiles
  abstract val fileCollection: ConfigurableFileCollection

  override fun asArguments(): Iterable<String> {
    return listOf("..." + fileCollection.files.single().absolutePath)
  }
}
tasks.test {
  val provider = objects.newInstance<MockitoAgentProvider>()
  provider.fileCollection.from(configuration)
  jvmArgumentProviders.add(provider)
}

also should use register instead of create for the Configuration

[jpenilla]

Looks fine, but one thing to consider is if Spigot configures the equivalent in Maven then this should move to the setup gradle build patch.