public void testGetWindSpeed_Nautical() {
   BuoyDetailViewModel viewModel =
       new BuoyDetailViewModel(WIND_CONDTIONS, WAVE_CONDITION, makeNauticalPreferences());
   viewModel.updateWindSpeed(mockInstrument);
   assertThat(mockInstrument.value).isEqualTo("10.0");
   assertThat(mockInstrument.units).isEqualTo("kts");
 }
 @Test
 public void testGetWindSpeed_Metric() {
   BuoyDetailViewModel viewModel =
       new BuoyDetailViewModel(WIND_CONDTIONS, WAVE_CONDITION, makeMetricPreferences());
   viewModel.updateWindSpeed(mockInstrument);
   assertThat(mockInstrument.value).isEqualTo("18.5");
   assertThat(mockInstrument.units).isEqualTo("kph");
 }