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This is a snippet of my activity : public class Search extends Activity { private String TAG = "SEARCH"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.search); Log.d(TAG, "About to call initialastion"); // new InitialisationTask(this).execute(); } } With the line above commented, I can happily create and execute unit tests like so : @RunWith(RobolectricTestRunner.class) public class SearchTest { private Search searchActivity; private Button searchButton; private Button clearButton; private Button loginButton; private Button registerButton; private EditText searchEditText; @Before public void setUp() throws Exception { searchActivity = new Search(); searchActivity.onCreate(null); searchButton = (Button) searchActivity.findViewById(R.id.btnPlateSearch); clearButton = (Button) searchActivity.findViewById(R.id.btnClearSearch); loginButton = (Button) searchActivity.findViewById(R.id.btnLogin); registerButton = (Button) searchActivity.findViewById(R.id.btnRegister); searchEditText = (EditText) searchActivity.findViewById(R.id.editTextInputPlate); } @Test public void assertSearchButtonHasCorrectLabel() { assertThat((String) searchButton.getText(), equalTo("Search")); } } However, if I uncomment the line new InitialisationTask(this).execute(); in my activity, my tests start to fail, most likely because of the reference to this . What is the best approach for mocking the context? I have tried to add contextMock = mock(Context.class); into my setUp() however I'm not sure how I can set this mock "into" the searchActivity Thanks

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