@RunWith(AndroidJUnit4.class)
public class QuizzFragmentInstrumentedUnitTest {
    //... declare members

    @Before
    public void setup(){
        mContext = InstrumentationRegistry.getTargetContext();

        mQuizzFragment = mock(QuizzFragment.class);

        mQuizzFragment.mLblQuestion = new TextView(mContext);
        mQuizzFragment.mLblResult = new TextView(mContext);

        mQuizzFragment.mRadioAnswer1 = new RadioButton(mContext);
        mQuizzFragment.mRadioAnswer2 = new RadioButton(mContext);
        mQuizzFragment.mRadioAnswer3 = new RadioButton(mContext);
        mQuizzFragment.mRadioAnswer4 = new RadioButton(mContext);

        doCallRealMethod().when(mQuizzFragment).showQuestion(anyString(), anyString(), anyString(), anyString(), anyString());
        doCallRealMethod().when(mQuizzFragment).showMessage(anyBoolean());
        doCallRealMethod().when(mQuizzFragment).init();
        when(mQuizzFragment.getContext()).thenReturn(mContext);

        mQuizzFragment.init();
    }
}