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Android - Robolectric
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  Robolectric test 
@RunWith(RobolectricTestRunner.class)
public class MyActivityTest {

  @Test
  public void clickingButton_shouldChangeResultsViewText() throws Exception {
    MyActivity activity = Robolectric.setupActivity(MyActivity.class);

    Button button = (Button) activity.findViewById(R.id.button);
    TextView results = (TextView) activity.findViewById(R.id.results);

    button.performClick();
    assertThat(results.getText().toString()).isEqualTo("Robolectric Rocks!");
  }
}
  Configuration

To configure robolectric add @Config annotation to test class or method.

Run with custom Application class

@RunWith(RobolectricTestRunner.class)
@Config(application = MyApplication.class)
public final class MyTest {
}

Set target SDK

@RunWith(RobolectricTestRunner.class)
@Config(sdk = Build.VERSION_CODES.LOLLIPOP)
public final class MyTest {
}

Run with custom manifest

When specified, robolectric will look relative to the current directory. Default value is `AndroidManifest.xml`

Resources and assets will be loaded relative to the manifest.

@RunWith(RobolectricTestRunner.class)
@Config(manifest = "path/AndroidManifest.xml")
public final class MyTest {
}

Use qualifiers

Possible qualifiers can be found in [android docs](https://developer.android.com/guide/topics/resources/providing-resources.html#AlternativeResources). 
@RunWith(RobolectricTestRunner.class)
public final class MyTest {

    @Config(qualifiers = "sw600dp")
    public void testForTablet() {
    }
}



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