Adding mockWebServer for the first time.

MainActivityTest.kt

@UninstallModules(
    UrlModule::class
)
@HiltAndroidTest
@RunWith(AndroidJUnit4::class)
class MainActivityTest {

    @get:Rule
    val hiltRule = HiltAndroidRule(this)

    private val mockWebServer = MockWebServer()

    @Before
    fun setUp(){
        IdlingRegistry.getInstance().register(TestIdlingResource.countingIdlingResource)
        mockWebServer.start(8080)
    }
    
    @Test
    fun screenIsReady(){
        val scenario = launchActivity<MainActivity>()

        onView(withId(R.id.recyclerViewMovies))
            .check(ViewAssertions.matches(ViewMatchers.withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE)))

        scenario.close()
    }


    @After
    fun tearDown(){
        mockWebServer.shutdown()
        IdlingRegistry.getInstance().unregister(TestIdlingResource.countingIdlingResource)
    }

    @Module
    @InstallIn(SingletonComponent::class)
    class FakeBaseUrlModule {
        @Provides
        @Singleton
        fun provideUrl() : String = "http://127.0.0.1:8080"
    }
}