[test-quarantine] Quarantine ServerVirtualizationTest and ServerRoutingTest flaky E2E tests

[DeagleGross]

Quarantines the following tests that have been intermittently failing in the components-e2e pipeline (definition ID 87):

Test	Failures (30 days)	Issue
ServerVirtualizationTest.NonZeroStartIndex_ScrollToMiddleThenMeasure	4	#156
ServerVirtualizationTest.CancelsOutdatedRefreshes_Async	2	#156
ServerRoutingTest.CanNavigateToQueryStringPageWithNoQuery	2	#157

Changes

• VirtualizationTest.cs: Mark CancelsOutdatedRefreshes_Async and NonZeroStartIndex_ScrollToMiddleThenMeasure as virtual so subclasses can override them.
• RoutingTest.cs: Mark CanNavigateToQueryStringPageWithNoQuery as virtual.
• TestSubclasses.cs: Add [QuarantinedTest] override methods for ServerVirtualizationTest and ServerRoutingTest.

Note: [QuarantinedTest] on a base class method does not propagate to subclass instances automatically — the subclass needs its own override with the attribute.

Associated issues:

• Quarantine ServerVirtualizationTest NonZeroStartIndex_ScrollToMiddleThenMeasure and CancelsOutdatedRefreshes_Async #156 (ServerVirtualizationTest)
• Quarantine ServerRoutingTest.CanNavigateToQueryStringPageWithNoQuery #157 (ServerRoutingTest.CanNavigateToQueryStringPageWithNoQuery)

Note

🔒 Integrity filter blocked 19 items

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

• #66159 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66137 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66135 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66092 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66084 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66070 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66061 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66060 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #66003 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65930 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65928 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65893 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65891 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65887 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65880 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• #65871 list_pull_requests: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
• ... and 3 more items

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 · ◷

---

Note

This was originally intended as a pull request, but the git push operation failed.

Workflow Run: View run details and download patch artifact

The patch file is available in the agent artifact in the workflow run linked above.

To create a pull request with the changes:

# Download the artifact from the workflow run
gh run download 24028854426 -n agent -D /tmp/agent-24028854426

# Create a new branch
git checkout -b quarantine/2026-04-06-virtualization-and-routing-c31aadec316537bd

# Apply the patch (--3way handles cross-repo patches where files may already exist)
git am --3way /tmp/agent-24028854426/aw-quarantine-2026-04-06-virtualization-and-routing.patch

# Push the branch to origin
git push origin quarantine/2026-04-06-virtualization-and-routing-c31aadec316537bd

# Create the pull request
gh pr create --title '[test-quarantine] Quarantine ServerVirtualizationTest and ServerRoutingTest flaky E2E tests' --base main --head quarantine/2026-04-06-virtualization-and-routing-c31aadec316537bd --repo DeagleGross/aspnetcore

Show patch preview (97 of 97 lines)

From 3ee37c09a4f49342353e0e4a31ddb0711bb625d3 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Mon, 6 Apr 2026 11:19:41 +0000
Subject: [PATCH] Quarantine ServerVirtualizationTest and ServerRoutingTest
 flaky E2E tests

Quarantines the following tests that have been intermittently failing in
the components-e2e pipeline (pipeline 87):

- ServerVirtualizationTest.NonZeroStartIndex_ScrollToMiddleThenMeasure
  (4 failures, issues/156)
- ServerVirtualizationTest.CancelsOutdatedRefreshes_Async
  (2 failures, issues/156)
- ServerRoutingTest.CanNavigateToQueryStringPageWithNoQuery
  (2 failures, issues/157)

Because [QuarantinedTest] on a base class method does not automatically
apply to subclass methods, the base class methods are marked virtual and
the quarantine is applied on the server-side subclass overrides in
TestSubclasses.cs.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 .../E2ETest/ServerExecutionTests/TestSubclasses.cs   | 12 ++++++++++++
 src/Components/test/E2ETest/Tests/RoutingTest.cs     |  2 +-
 .../test/E2ETest/Tests/VirtualizationTest.cs         |  4 ++--
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/Components/test/E2ETest/ServerExecutionTests/TestSubclasses.cs b/src/Components/test/E2ETest/ServerExecutionTests/TestSubclasses.cs
index c766e26b00..6c246fad7e 100644
--- a/src/Components/test/E2ETest/ServerExecutionTests/TestSubclasses.cs
+++ b/src/Components/test/E2ETest/ServerExecutionTests/TestSubclasses.cs
@@ -47,6 +47,10 @@ public class ServerRoutingTest : RoutingTest
     [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/61080")]
     public override void NavigationLock_OverlappingNavigationsCancelExistingNavigations_HistoryNavigation()
         => base.NavigationLock_OverlappingNavigationsCancelExistingNavigations_HistoryNavigation();
+
+    [QuarantinedTest("https://github.com/DeagleGross/aspnetcore/issues/157")]
+    public overrid
... (truncated)