InstrumentTest Resources with Android + Gradle

Question

I need to test a custom Adapter which uses a TypedArray from which to create the data. I want to write an instrument test for it (ie AndroidTestCase) which of course needs its own test resources.

After setting up the instrumentTest subfolder with the following structure:

/ instrumentTest
  - src
  / res
    - drawable
    - layout
      # layouts for the tests
    - values
      # resource values where the TypedArray exists

Initially Android Studio (IntelliJ IDEA 13) do not recognize the R references (under PACKAGE_NAME.test.R , but after I run assembleTest they get recognized all right. When I do a connectedInstrumentTest the tests fail because of this error:

android.content.res.Resources$NotFoundException: Array resource ID #0x7f040000
    at android.content.res.Resources.obtainTypedArray(Resources.java:509)

The resource it is failing at is under PACKAGE_NAME.test.R .

Help?

Answer 1

The problem is in AndroidTestCase . The context it provides appears not to be actually usable. Changing to InstrumentationTestCase and getting the resources from

getInstrumentation().getContext().getResources()

Seems to work just fine.