System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac

[elinor-fung]

  Starting:    System.IO.FileSystem.Watcher.Tests (parallel test collections = on [8 threads], stop on fail = off)
    System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac(filesCount: 2) [FAIL]
      Assert.Equal() Failure: Collections differ
                                                                                      ↓ (pos 0)
      Expected: ArraySelectIterator<<>f__AnonymousType0<string, string>, FiredEvent> [Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir0 , Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir1 ]
      Actual:   List<FiredEvent>                                                     [Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir1 , Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir0 ]
                                                                                      ↑ (pos 0)
      Stack Trace:
        /_/src/libraries/System.IO.FileSystem.Watcher/tests/FileSystemWatcher.Directory.Move.cs(184,0): at System.IO.Tests.Directory_Move_Tests.DirectoryMove_Multiple_FromWatchedToUnwatched(Int32 filesCount, Boolean skipOldEvents)
        /_/src/libraries/System.IO.FileSystem.Watcher/tests/FileSystemWatcher.Directory.Move.cs(42,0): at System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac(Int32 filesCount)
           at InvokeStub_Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac(Object, Span`1)
        /_/src/libraries/System.Private.CoreLib/src/System/Reflection/MethodBaseInvoker.cs(95,0): at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)  Starting:    System.IO.FileSystem.Watcher.Tests (parallel test collections = on [8 threads], stop on fail = off)
    System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac(filesCount: 2) [FAIL]
      Assert.Equal() Failure: Collections differ
                                                                                      ↓ (pos 0)
      Expected: ArraySelectIterator<<>f__AnonymousType0<string, string>, FiredEvent> [Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir0 , Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir1 ]
      Actual:   List<FiredEvent>                                                     [Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir1 , Deleted /tmp/helix/working/BCCF0A62/t/#Directory_Move_Tests_meuei0e5.azu/CreateTestDirectory_237_jtskqvgj/dir0 ]
                                                                                      ↑ (pos 0)
      Stack Trace:
        /_/src/libraries/System.IO.FileSystem.Watcher/tests/FileSystemWatcher.Directory.Move.cs(184,0): at System.IO.Tests.Directory_Move_Tests.DirectoryMove_Multiple_FromWatchedToUnwatched(Int32 filesCount, Boolean skipOldEvents)
        /_/src/libraries/System.IO.FileSystem.Watcher/tests/FileSystemWatcher.Directory.Move.cs(42,0): at System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac(Int32 filesCount)
           at InvokeStub_Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac(Object, Span`1)
        /_/src/libraries/System.Private.CoreLib/src/System/Reflection/MethodBaseInvoker.cs(95,0): at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1404771
Build error leg or test failing: System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac
Pull request: #125795

Error Message

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Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": ["System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac", "Assert.Equal() Failure: Collections differ"],
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1404771
Error message validated: [System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac Assert.Equal() Failure: Collections differ]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 5/1/2026 3:45:29 PM UTC

Report

Build	Definition	Test	Pull Request
1413938	dotnet/runtime	System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac	#126767
1406105	dotnet/runtime	System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac
1404771	dotnet/runtime	System.IO.Tests.Directory_Move_Tests.Directory_Move_Multiple_From_Watched_To_Unwatched_Mac	#125795

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	1	3

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I'm a bot. Here is a possible related and/or duplicate issue (I may be wrong):

• FileSystemWatcher events out of order on OSX #30415