Use live grouping and live filtering in TestExplorer

Rubberduck.Core/UI/UnitTesting/TestExplorerViewModel.cs

@@ -82,15 +82,18 @@ internal sealed class TestExplorerViewModel : ViewModelBase, INavigateSelection,
             AnnotationUpdater = annotationUpdater;
 
             Model = model;
-            Model.TestCompleted += HandleTestCompletion;
 
             if (CollectionViewSource.GetDefaultView(Model.Tests) is ListCollectionView tests)
             {
                 tests.SortDescriptions.Add(new SortDescription("QualifiedName.QualifiedModuleName.Name", ListSortDirection.Ascending));
                 tests.SortDescriptions.Add(new SortDescription("QualifiedName.MemberName", ListSortDirection.Ascending));
+                tests.IsLiveFiltering = true;
+                tests.IsLiveGrouping = true;
                 Tests = tests;
             }
 
+
+
             OnPropertyChanged(nameof(Tests));
             TestGrouping = TestExplorerGrouping.Outcome;
 
@@ -230,16 +233,6 @@ private bool FilterResults(object unitTest)
             return passesNameFilter && passesOutcomeFilter;
         }
 
-        private void HandleTestCompletion(object sender, TestCompletedEventArgs e)
-        {
-            if (TestGrouping != TestExplorerGrouping.Outcome)
-            {
-                return;
-            }
-
-            Tests.Refresh();
-        }
-
         public IRewritingManager RewritingManager { get; }
         public IAnnotationUpdater AnnotationUpdater { get; }
 
@@ -605,7 +598,6 @@ private void OpenSettings(object param)
 
         public void Dispose()
         {
-            Model.TestCompleted -= HandleTestCompletion;
             Model.Dispose();
         }
     }