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Tests | Address additional flaky tests - #4305
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This prevents checks of the default AppContext switch values which would run in parallel to other tests which modify these values via the RAII helper.
* Swap System.Random with the same RNG which SqlClient uses. * Make a fixed number of attempts to reattempt key creation if a key with the generated name already exists.
…ate operation cancellation
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LocalAppContextSwitchesHelper was returning the field values, skipping the default values exposed by LocalAppContextSwitches when the AppContext switch had not been set one way or another.
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #4305 +/- ##
==========================================
- Coverage 65.32% 63.73% -1.60%
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Files 285 281 -4
Lines 43373 66579 +23206
==========================================
+ Hits 28335 42431 +14096
- Misses 15038 24148 +9110
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mdaigle
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Resolve conflict in LocalAppContextSwitchesTest.cs by keeping switchesHelper pattern and incorporating new UseLegacyIdleTimeoutBehavior switch from main. Also fix UseLegacyIdleTimeoutBehavior getter in LocalAppContextSwitchesHelper to use GetSwitchPropertyValue consistently.
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Not entirely sure about using reflection to access the context switches, but it's not different than what we were doing before.
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* Update LocalAppContextSwitchesTest to use RAII helper This prevents checks of the default AppContext switch values which would run in parallel to other tests which modify these values via the RAII helper. * Address duplicate AKV key names * Swap System.Random with the same RNG which SqlClient uses. * Make a fixed number of attempts to reattempt key creation if a key with the generated name already exists. * Remove hardcoded stored procedure name * Accept either a SqlException or an InvalidOperationException to indicate operation cancellation * Update assertion for UseLegacyFailoverAlternationOnLoginSqlErrors * Correct test failures LocalAppContextSwitchesHelper was returning the field values, skipping the default values exposed by LocalAppContextSwitches when the AppContext switch had not been set one way or another. * Modify AppContext switch helper to include UseOverallConnectTimeoutForPoolWait --------- Co-authored-by: Malcolm Daigle <mdaigle@microsoft.com> Co-authored-by: Malcolm Daigle <daiglemalcolm@gmail.com>
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Description
This corrects a number of other flaky tests which I noticed while looking at the XEvents tests; these fixes are small enough to bundle together.
LocalAppContextSwitchesTestThis is a standalone test, in an assembly where tests in the same class run in sequence, and classes run in parallel. That presents a problem if the AppContext switch tests are running in parallel with tests in
ConnectionFailoverTestsorSqlConnectionOptionsTest.LocalAppContextSwitchesTestcan find itself in a position where it's assertingEnableMultiSubnetFailoverByDefaultorIgnoreServerProvidedFailoverPartnerat the same time thatSqlConnectionOptionsTest.TestDefaultMultiSubnetFailoverorConnectionFailoverTests.TransientFault_IgnoreServerProvidedFailoverPartner_ShouldConnectToUserProvidedPartnerare setting these switches totrue.LocalAppContextSwitchesHelperhas its own way to deal with this - a staticSemaphoreSlimwhich only allows one writer at a time. I've chosen to use this in order to maintain consistency when dealing with AppContext switches.BatchTests.ParameterInOutAndReturnThis test manually created a stored procedure with a hardcoded name. There were a few instances where this already existed. I've replaced this with the
StoredProcedureRAII primitive.AKVUnitTests,EnclaveAzureDatabaseTestsSurprisingly, it looks like there have been occasions where a deleted key with the same name already existed. I've switched the RNG to a more robust implementation, and added some limited retry logic.
The simpler solution would probably have been to purge the key and retry, but I'm not sure what permissions this runs with in CI, and if the key has been deleted then there's no point - it'll be purged in due course.
It's also worth noting the differing approach to generating key names. This is because AKV names have different requirements to database objects.
SqlCommandCancelTestThis depended upon always catching a
SqlExceptionwhen an operation was cancelled. Sometimes this can be anInvalidOperationException.Issues
None.
Testing
Modified tests continue to pass.