Quarantine VirtualizeTest.Virtualize_ScrollToBottom_SetWhenAtEndWithNewMeasurements

[github-actions]

Failing Test(s)

Microsoft.AspNetCore.Components.Virtualization.VirtualizeTest.Virtualize_ScrollToBottom_SetWhenAtEndWithNewMeasurements

Error Message

scrollToBottom should either be called via JS interop or be pending

Stacktrace

Details

at Microsoft.AspNetCore.Components.Virtualization.VirtualizeTest.Virtualize_ScrollToBottom_SetWhenAtEndWithNewMeasurements()
  in /_/src/Components/Web/test/Virtualization/VirtualizeTest.cs:line 474

Logs

Details

Passed VirtualizeTest.Virtualize_NegativeSpacerSeparationDoesNotCrashComponent [10 ms]
[xUnit.net 00:00:03.84]     VirtualizeTest.Virtualize_ScrollToBottom_SetWhenAtEndWithNewMeasurements [FAIL]
[xUnit.net 00:00:03.85]       scrollToBottom should either be called via JS interop or be pending
Failed VirtualizeTest.Virtualize_ScrollToBottom_SetWhenAtEndWithNewMeasurements [6 ms]

Build

https://dev.azure.com/dnceng-public/public/_build/results?buildId=1362201

Note

🔒 Integrity filter blocked 12 items

The following items were blocked because they don't meet the GitHub integrity level.

• #65815 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65817 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65827 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65816 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66130 issue_read: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66135 issue_read: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #40626 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #46028 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #49286 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #54846 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #55092 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #55707 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".

To allow these resources, lower min-integrity in your GitHub frontmatter:

tools:
  github:
    min-integrity: approved  # merged | approved | unapproved | none

Generated by Daily Test Quarantine Management · ● 25.1M · ◷

[github-actions]

Investigation

Virtualize_ScrollToBottom_SetWhenAtEndWithNewMeasurements has failed 3 times in build 1362201 (pipeline 83 - aspnetcore-ci).

Failure pattern: scrollToBottom should either be called via JS interop or be pending

Test context: The test verifies that when a Virtualize component has scrolled to the bottom and new items are measured, the scrollToBottom JS interop call is made (either synchronously or queued as pending). The mock IJSRuntime is checked to verify the call was made.

Root cause: The assertion fails when scrollToBottom is neither called synchronously nor queued. This indicates the Virtualize component determined it was not at the bottom after new measurements, or the _scrollToBottom flag was cleared before the JS interop call could be made.

Likely race: In the production Virtualize component, the _scrollToBottom flag is set and then an async render cycle is triggered. If the flag is checked again before the render completes (due to a re-entrancy scenario with JSRuntime.InvokeAsync), it may be cleared prematurely.

Recommendation: Review the Virtualize<T>.ApplyChanges() method and _scrollToBottom flag management to ensure the scroll-to-bottom state is preserved correctly through asynchronous render cycles. The test's use of MockBehavior.Loose means the mock JS calls may not be tracked correctly — consider switching to MockBehavior.Strict to catch unexpected call patterns.

Note

🔒 Integrity filter blocked 12 items

The following items were blocked because they don't meet the GitHub integrity level.

• #65815 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65817 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65827 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65816 search_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66130 issue_read: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66135 issue_read: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #40626 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #46028 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #49286 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #54846 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #55092 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #55707 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".

To allow these resources, lower min-integrity in your GitHub frontmatter:

tools:
  github:
    min-integrity: approved  # merged | approved | unapproved | none

Generated by Daily Test Quarantine Management · ● 25.1M · ◷