@Test
  public void test01CheckChildIsLinearLayout() {
    FrameLayout frame =
        (FrameLayout) Helpers.findViewByIdString(activity, "activity_pace_calculator");

    assertThat(frame, notNullValue());
    assertThat(frame.getChildCount(), equalTo(1));
    assertThat(frame.getChildAt(0), instanceOf(LinearLayout.class));
  }
  @Test
  public void test04CheckPaceCalculation() {
    EditText inputDistance = (EditText) Helpers.findViewByIdString(activity, "input_distance");
    EditText inputTimeMin = (EditText) Helpers.findViewByIdString(activity, "input_time_min");
    EditText inputTimeSec = (EditText) Helpers.findViewByIdString(activity, "input_time_sec");
    EditText inputPaceMin = (EditText) Helpers.findViewByIdString(activity, "input_pace_min");
    EditText inputPaceSec = (EditText) Helpers.findViewByIdString(activity, "input_pace_sec");
    Button buttonCalculate = (Button) Helpers.findViewByIdString(activity, "button_calculate");

    assertThat(inputDistance, notNullValue());
    assertThat(inputTimeMin, notNullValue());
    assertThat(inputTimeSec, notNullValue());
    assertThat(inputPaceMin, notNullValue());
    assertThat(inputPaceSec, notNullValue());
    assertThat(buttonCalculate, notNullValue());

    inputDistance.setText("3.1");
    inputTimeMin.setText("23");
    inputTimeSec.setText("22");

    buttonCalculate.callOnClick();

    Assertions.assertThat(inputPaceMin).containsText("7");
    Assertions.assertThat(inputPaceSec).containsText("32");
  }