Harden CancelSendPingAsync tests#116588
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antonfirsov merged 4 commits intodotnet:mainfrom Jun 16, 2025
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Pull Request Overview
This PR separates the existing CancelSendPingAsync test into two focused scenarios—hostname and IPAddress variants—and hardens the IPAddress test by pinging unreachable addresses with retry logic to reduce CI flakiness.
- Split
CancelSendPingAsyncintoCancelSendPingAsync_HostNameandCancelSendPingAsync_IPAddressmethods. - Updated the IPAddress test to iterate over multiple unreachable IPs and retry if the network immediately replies.
- Removed combined host/IP logic and streamlined cancellation calls.
Comments suppressed due to low confidence (1)
src/libraries/System.Net.Ping/tests/FunctionalTests/PingTest.cs:715
- [nitpick] The comment on the
OuterLoopattribute refers to an "external host", but this test targets unreachable IPs. Updating the comment to reflect dependency on unreachable-address behavior would improve clarity.
[OuterLoop] // Depends on external host and assumption that successful ping takes long enough for cancellation to go through first
src/libraries/System.Net.Ping/tests/FunctionalTests/PingTest.cs
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Co-authored-by: Copilot <[email protected]>
…onfirsov/runtime into harden-CancelSendPingAsync-1
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/azp run runtime-libraries-coreclr outerloop |
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Azure Pipelines successfully started running 1 pipeline(s). |
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/azp run runtime-libraries-coreclr outerloop |
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Azure Pipelines successfully started running 1 pipeline(s). |
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Outerloop failures are unrelated. |
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Fixes #113831.
Separate
SendPingAsync(hostname)andSendPingAsync(IPAddress)test implementations:SendPingAsync(hostname): we didn't see issues with this variant in the CI. It effectively tests if the resolution ofwww.microsoft.comis cancelled as part of theSendPingAsynccall. Keep the existing logic in a separate method.SendPingAsync(IPAddress): occasionally, pinging the valid IP likely resulted in replies before the cancellation could kick in on Helix Mac machines. Instead, let's ping an unreachable IP to avoid this. Since that can also sometimes result to an ICMP reply instead of a timeout, use the same trick as in HardenPing_TimedOut_*tests #116500, repeating the test with other hosts if it happens.