diff --git a/java/testing.go b/java/testing.go
index 4b8b849..2343294 100644
--- a/java/testing.go
+++ b/java/testing.go
@@ -54,6 +54,8 @@
 	android.FixtureAddTextFile(defaultJavaDir+"/Android.bp", GatherRequiredDepsForTest()),
 )
 
+var PrepareForTestWithOverlayBuildComponents = android.FixtureRegisterWithContext(registerOverlayBuildComponents)
+
 // Prepare a fixture to use all java module types, mutators and singletons fully.
 //
 // This should only be used by tests that want to run with as much of the build enabled as possible.