Using Roboletric to build Android Unit Test

Robolectric is a unit test framework that de-fangs the Android SDK jar so you can test-drive the development of your Android app. Tests run inside the JVM on your workstation in seconds

Configration

Add the following dependency to the Gradle build file:

    testCompile 'org.mockito:mockito-core:1.9.5'
    testCompile "org.robolectric:robolectric:3.1.1"
    testCompile 'junit:junit:4.12'
 

make a dir: D:\denali\scout4cars\Android-Java\HMI\src\test\java\com\telenav\arp

The package path to the test must be the same as src / main / java / {packageName} so that android studio can recognize the unit test directory

Example

@RunWith(RobolectricGradleTestRunner.class)
@Config(constants = com.telenav.arp.app.BuildConfig.class, sdk = 22)
public class EntityDetailFragmentUnitTest  {

  
    @Before
    public void setup(){
        MainActivity mainActivity= Robolectric.buildActivity(MainActivity.class).get();
        DisplayManager.getInstance().setActivity(mainActivity);
     }

    @Test
    public void testOnCreateView() throws Exception {
        EntityDetailFragment fragment=new EntityDetailFragment();
        startFragment(fragment);
         // check title label
        TextView textView = (TextView) ReflectUtil.getFieldValue(fragment, "mTitle");
        assertEquals(fragment.getActivity().getString(R.string.entityDetailTitle), textView.getText().toString());
    }

• setup the test:

  
  
  configrationTest.png

• run

  
  
  run.png

• result

  
  
  result.png

Using motiko for mocking objects

   @Test
    public void testOnPageHide() throws Exception {
        EntityDetailFragment mock = mock(EntityDetailFragment.class);
        doCallRealMethod().when(mock).onPageHide();
        mock.onPageHide();
        verify(mock, atLeastOnce()).clearMap();
    }

mock a class, then set the preconditions, and finally verify that the clearMap () method was executed at least once while executing onPageHide ()