Fix race condition in RemoveInnerPage unit test#32787
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jfversluis merged 1 commit intomainfrom Nov 25, 2025
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The RemoveInnerPage test was failing randomly on CI due to a race condition: - The test removed a page but didn't wait for navigation to complete - TestNavigationHandler simulates async navigation with a 10ms delay - If the test completed before navigation finished, Appearing/Disappearing events could fire after test completion, throwing uncaught exceptions Fixed by: 1. Changed nav declaration from NavigationPage to var (TestNavigationPage) 2. Added await nav.NavigatingTask after RemovePage call This matches the pattern used in the RemoveLastPage test and ensures the test waits for async navigation to complete before finishing.
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Pull Request Overview
This PR fixes a race condition in the RemoveInnerPage unit test that was causing intermittent failures on CI. The test was completing before asynchronous navigation finished, causing event handlers to fire after test completion and throw uncaught exceptions.
Key changes:
- Modified variable declaration to preserve
TestNavigationPagetype access - Added proper await for navigation completion to ensure deterministic test behavior
jfversluis
approved these changes
Nov 25, 2025
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It would be very helpful if you could test the resulting artifacts from this PR and let us know in a comment if this change resolves your issue. Thank you!
Description of Change
Fixes a race condition in the
RemoveInnerPageunit test that was causing random failures on CI.Issue
The test was failing randomly on CI because it didn't wait for the async navigation to complete after calling
nav.Navigation.RemovePage(pageToRemove).Root Cause
TestNavigationHandlersimulates async navigation with a 10ms delayRemovePageAppearing/Disappearingevent handlers would throw exceptions that weren't caught by the test frameworkChanges
navdeclaration fromNavigationPagetovarto preserve theTestNavigationPagetypeawait nav.NavigatingTask;afterRemovePagecall to ensure the test waits for navigation to completeThis matches the pattern used in the
RemoveLastPagetest in the same file (line 122).Testing
API Changes
None
Behavioral Changes
None - this only fixes test infrastructure
PR Checklist