Since your test resources directory is located in a directory that compiles java sources, you can move the test resources folder. Add this to your settings:
resourceDirectory in Test <<= (baseDirectory) apply {(baseDir: File) => baseDir / "testResources"}
For example, in the /Build.scala project:
val main = PlayProject(appName, appVersion, appDependencies, mainLang = JAVA).settings( resourceDirectory in Test <<= (baseDirectory) apply {(baseDir: File) => baseDir / "testResources"} )
Manage your changes in the console with
play "show test:resource-directory"
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