Fix test

app/src/main/java/fr/free/nrw/commons/contributions/ContributionBoundaryCallback.java

@@ -33,7 +33,7 @@ public class ContributionBoundaryCallback extends PagedList.BoundaryCallback<Con
   public ContributionBoundaryCallback(final ContributionsRepository repository,
       final SessionManager sessionManager,
       final MediaClient mediaClient,
-      @Named(CommonsApplicationModule.IO_THREAD) Scheduler ioThreadScheduler) {
+      @Named(CommonsApplicationModule.IO_THREAD) final Scheduler ioThreadScheduler) {
     super();
     this.ioThreadScheduler = ioThreadScheduler;
     networkState = new MutableLiveData();
@@ -48,19 +48,13 @@ public MutableLiveData getNetworkState() {
     return networkState;
   }
 
-  public MutableLiveData getInitialLoading() {
-    return initialLoading;
-  }
-
   @Override
   public void onZeroItemsLoaded() {
-    Timber.d("On zero item loaded");
     fetchContributions();
   }
 
   @Override
   public void onItemAtFrontLoaded(@NonNull final Contribution itemAtFront) {
-    Timber.d("On item front");
   }
 
   @Override

app/src/test/kotlin/fr/free/nrw/commons/contributions/ContributionBoundaryCallbackTest.kt

@@ -55,18 +55,15 @@ class ContributionBoundaryCallbackTest {
     @Throws(Exception::class)
     fun setUp() {
         MockitoAnnotations.initMocks(this)
-        scheduler = Schedulers.io()
-
+        scheduler = Schedulers.trampoline()
         contributionBoundaryCallback = ContributionBoundaryCallback(repository, sessionManager, mediaClient, scheduler);
-        whenever(repository.fetchContributions())
-            .thenReturn(createMockDataSourceFactory(listOf(mock(Contribution::class.java))))
     }
 
     @Test
     fun testFetchContributions() {
         whenever(sessionManager.userName).thenReturn("Test")
         whenever(mediaClient.getMediaListForUser(anyString())).thenReturn(
-            Single.just(Arrays.asList(mock(Media::class.java)))
+            Single.just(listOf(mock(Media::class.java)))
         )
         contributionBoundaryCallback.fetchContributions()
         verify(repository, times(1)).save(anyList());