How to mock getApplicationContext

Question

I have an application that stores app context information. The app context information is shared between activities in MyApp class which extends Application class.

Answer 1

My problem was not exactly the same, but similar. Here is what worked for me.

Firstly, at a class level for the test

import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
@PrepareForTest({CustomApp.class, AppUtils.class})
public class CustomClientTest {

    @Mock
    Context mockContext;

    @Mock
    MainActivity mainActivityMock;

then the setup()

@Before
public void setUp() throws Exception {
    PowerMockito.mockStatic(CustomApp.class);
    PowerMockito.mockStatic(AppUtils.class);
    when(CustomApp.getAppContext()).thenReturn(mockContext);
    when(webViewMock.getContext()).thenReturn(mainActivityMock);
}

and finally in the test itself

@Test
public void testShouldDoMyMethodRight() {
    // true tests
    assertTrue(customClient.shouldDoMethod(webViewMock, Constants.HAPPY_PATH));
    assertTrue(customClient.shouldOverrideUrlLoading(webViewMock, Constants.SPECIAL_PATH));
}