Merge pull request #28425 from jaredpar/fix-it

Fix VB snippet tests race condition

src/VisualStudio/Core/Test/Snippets/SnippetTestState.vb

@@ -14,6 +14,7 @@ Imports Microsoft.CodeAnalysis.Test.Utilities
 Imports Microsoft.VisualStudio.Commanding
 Imports Microsoft.VisualStudio.Composition
 Imports Microsoft.VisualStudio.Editor
+Imports Microsoft.VisualStudio.Language.Intellisense
 Imports Microsoft.VisualStudio.LanguageServices.Implementation.Snippets
 Imports Microsoft.VisualStudio.Shell
 Imports Microsoft.VisualStudio.Text
@@ -29,7 +30,9 @@ Namespace Microsoft.VisualStudio.LanguageServices.UnitTests.Snippets
         Inherits AbstractCommandHandlerTestState
 
         Public Sub New(workspaceElement As XElement, languageName As String, startActiveSession As Boolean, extraParts As IEnumerable(Of Type), Optional workspaceKind As String = Nothing)
-            MyBase.New(workspaceElement, extraParts:=CreatePartCatalog(extraParts), workspaceKind:=workspaceKind)
+            ' Remove the default completion presenters to prevent them from conflicting with the test one
+            ' that we are adding.
+            MyBase.New(workspaceElement, extraParts:=CreatePartCatalog(extraParts), workspaceKind:=workspaceKind, excludedTypes:={GetType(IIntelliSensePresenter(Of ICompletionPresenterSession, ICompletionSession))})
 
             Workspace.Options = Workspace.Options.WithChangedOption(InternalFeatureOnOffOptions.Snippets, True)