AssertionFailedError in ApplicationTestCase.createApplication() in newer Android versions when using MockContext

Question

I am writing an Android ApplicationTestCase (TemperatureConverterApplicationTests example found in Android Application Testing Guide by Diego T. Milano on page 171). Th

Answer 1

I get this behaviour too. I've worked around it by extending ContextWrapper:

public class RenamingMockContext extends RenamingDelegatingContext
{
    private static final String PREFIX = "test.";

    public RenamingMockContext(Context context)
    {
        super(new ContextWrapper(context), PREFIX);
    }

    @Override
    public String getPackageName()
    {
        return PREFIX + super.getPackageName();
    }
}