Add tests for ViewModels.

Author: android10

app/src/test/kotlin/com/fernandocejas/sample/features/movies/MovieDetailsViewModelTest.kt

@@ -0,0 +1,50 @@
+package com.fernandocejas.sample.features.movies
+
+import com.fernandocejas.sample.AndroidTest
+import com.fernandocejas.sample.framework.functional.Either.Right
+import com.nhaarman.mockito_kotlin.given
+import kotlinx.coroutines.experimental.runBlocking
+import org.amshove.kluent.shouldEqualTo
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+
+class MovieDetailsViewModelTest : AndroidTest() {
+
+ private lateinit var movieDetailsViewModel: MovieDetailsViewModel
+ private lateinit var getMovieDetails: GetMovieDetails
+ private lateinit var playMovie: PlayMovie
+
+ @Mock private lateinit var moviesRepository: MoviesRepository
+
+ @Before
+ fun setUp() {
+ playMovie = PlayMovie(context())
+ getMovieDetails = GetMovieDetails(moviesRepository)
+ movieDetailsViewModel = MovieDetailsViewModel(getMovieDetails, playMovie)
+ }
+
+ @Test
+ fun `loading movie details should update live data`() {
+ runBlocking {
+ val movieDetails = MovieDetails(0, "IronMan", "poster", "summary",
+ "cast", "director", 2018, "trailer")
+ given { moviesRepository.movieDetails(0) }.willReturn(Right(movieDetails))
+
+ movieDetailsViewModel.loadMovieDetails(0)
+
+ val movie = movieDetailsViewModel.movieDetails.value
+
+ with(movie!!) {
+ id shouldEqualTo 0
+ title shouldEqualTo "IronMan"
+ poster shouldEqualTo "poster"
+ summary shouldEqualTo "summary"
+ cast shouldEqualTo "cast"
+ director shouldEqualTo "director"
+ year shouldEqualTo 2018
+ trailer shouldEqualTo "trailer"
+ }
+ }
+ }
+}

app/src/test/kotlin/com/fernandocejas/sample/features/movies/MoviesViewModelTest.kt

@@ -0,0 +1,41 @@
+package com.fernandocejas.sample.features.movies
+
+import com.fernandocejas.sample.AndroidTest
+import com.fernandocejas.sample.framework.functional.Either.Right
+import com.nhaarman.mockito_kotlin.given
+import kotlinx.coroutines.experimental.runBlocking
+import org.amshove.kluent.shouldEqualTo
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+
+class MoviesViewModelTest : AndroidTest() {
+
+ private lateinit var moviesViewModel: MoviesViewModel
+ private lateinit var getMovies: GetMovies
+
+ @Mock private lateinit var moviesRepository: MoviesRepository
+
+ @Before
+ fun setUp() {
+ getMovies = GetMovies(moviesRepository)
+ moviesViewModel = MoviesViewModel(getMovies)
+ }
+
+ @Test fun `loading movies should update live data`() {
+ runBlocking {
+ val moviesList = listOf(Movie(0, "IronMan"), Movie(1, "Batman"))
+ given { moviesRepository.movies() }.willReturn(Right(moviesList))
+
+ moviesViewModel.loadMovies()
+
+ val movies = moviesViewModel.movies.value
+
+ movies!!.size shouldEqualTo 2
+ movies[0].id shouldEqualTo 0
+ movies[0].poster shouldEqualTo "IronMan"
+ movies[1].id shouldEqualTo 1
+ movies[1].poster shouldEqualTo "Batman"
+ }
+ }
+}

gradle.properties

@@ -1,4 +1,4 @@
 org.gradle.jvmargs=-Dfile.encoding=UTF-8 -XX:MaxPermSize=512m -Xmx4608M
 org.gradle.parallel=true
 org.gradle.configureondemand=true
-kotlin.incremental=true
+kotlin.incremental=true