kotlin_testing_pt2_example_1_test_2

kotlin_testing_pt2_example_1_test_2.kt

class TemperaturePresenterTest {

   @Mock lateinit var locationProvider: LocationProvider
   @Mock lateinit var temperatureProvider: TemperatureProvider
   @Mock lateinit var view: View

    lateinit var tested: TemperaturePresenter

   @Before
   fun setUp() {
       MockitoAnnotations.initMocks(this)

       tested = TemperaturePresenter(locationProvider, temperatureProvider, view)
   }

 @Test
 fun `display temperature for last known location first, and then for exact location`() {
      val lastLocation = Coordinate(41.5, 8.9)
      val currentLocation = Coordinate(38.7, 9.7)
    
      Mockito.`when`(locationProvider.getLastKnownLocation())
                .thenReturn(lastLocation)
        
      Mockito.`when`(locationProvider.getExactLocation())
                .thenReturn(currentLocation)

      Mockito.`when`(temperatureProvider.getCelsiusTemperatureAt(lastLocation))
                .thenReturn(18f)
        
      Mockito.`when`(temperatureProvider.getCelsiusTemperatureAt(currentLocation))
                .thenReturn(21f)

      tested.start()

      Mockito.inOrder(temperatureProvider, view).apply {
          verify(temperatureProvider).getCelsiusTemperatureAt(lastLocation)
          verify(view).displayTemperature(18f)
          verify(temperatureProvider).getCelsiusTemperatureAt(currentLocation)
          verify(view).displayTemperature(21f)
     }
  }
}