Android test raw resource

By default your androidTest project will include your app’s R class, but androidTest’s resources will be generated into a separate file. Make sure you import the R class from your test project:

import com.your.package.test.R;

[..]

getInstrumentation().getContext().getResources().openRawResource(R.raw.test_file);

You can also directly reference the test project’s R class:

getInstrumentation().getContext().getResources().openRawResource(com.your.package.test.R.raw.test_file);