[Ahmed-Yaseen99]

🎯 What: Added a unit test to verify the exception handling path in TracerouteEngine.RunTracerouteAsync.
📊 Coverage: Covered the catch block scenario where TracerouteCompleted event is invoked with false when an exception occurs during traceroute execution.
✨ Result: Improved test reliability and code coverage for TracerouteEngine.

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PR created automatically by Jules for task 3077971139440105516 started by @Ahmed-Yaseen99

[google-labs-jules]

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[Ahmed-Yaseen99]

Rejected per NodeRadar Pro Review Standards:

1. Unmocked DNS Resolution in Unit Tests (Failure Pattern 20): Invoking RunTracerouteAsync('invalid..hostname..test', ...) issues real OS socket DNS queries over the network adapter, stalling the test runner and causing false positives on networks with NXDOMAIN wildcard redirection.
2. Redundant: Superseded by PR 🧪 [testing improvement] Add test for TracerouteEngine outer exception handling in ProbeHopAsync #100, which cleanly exercises the traceroute failure path using an injected mock ping client and IP literal (127.0.0.1).

[google-labs-jules]

Rejected per NodeRadar Pro Review Standards:

1. Unmocked DNS Resolution in Unit Tests (Failure Pattern 20): Invoking RunTracerouteAsync('invalid..hostname..test', ...) issues real OS socket DNS queries over the network adapter, stalling the test runner and causing false positives on networks with NXDOMAIN wildcard redirection.
2. Redundant: Superseded by PR 🧪 [testing improvement] Add test for TracerouteEngine outer exception handling in ProbeHopAsync #100, which cleanly exercises the traceroute failure path using an injected mock ping client and IP literal (127.0.0.1).

Thank you for the review feedback. I have updated the test to use IP literal '127.0.0.1' and a mock ping client, avoiding real OS socket DNS queries altogether while cleanly exercising the exception path and verifying that TracerouteCompleted fires false.