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dotnet / orleans Public

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[WIP] testing & testability improvements#9866

Draft

ReubenBond wants to merge 70 commits intodotnet:maindotnet/orleans:mainfrom

ReubenBond:fix/test-flakiness/1ReubenBond/orleans:fix/test-flakiness/1Copy head branch name to clipboard

Conversation Commits70 (70)Checks Files changed

Draft

[WIP] testing & testability improvements#9866
ReubenBond wants to merge 70 commits intodotnet:mainfrom
ReubenBond:fix/test-flakiness/1

Commits

Commits on Jan 6, 2026

WIP
ReubenBond
committed
Fix build errors in diagnostic events infrastructure
ReubenBond
committed
Add membership diagnostic events, TimeProvider support, and test utilities
ReubenBond
committed
Add WaitForDeactivationCountAsync to GrainDiagnosticObserver and migrate ActivationCollectorTests
ReubenBond
committed
Fix flaky ActivationCollectorShouldNotCollectBusyStatelessWorkers test
ReubenBond
committed
Add MembershipDiagnosticObserver and fix ClientIdPartitionDataRebuildTests
ReubenBond
committed
Use GrainDiagnosticObserver in StuckGrainTest_Basic
ReubenBond
committed
Remove unnecessary Thread.Sleep in ConsistentRingProviderTests
ReubenBond
committed
Reduce delay in BasicActivation_Reentrant_RecoveryAfterExpiredMessage test
ReubenBond
committed
Remove unnecessary 5-second delay in MultipleGrainDirectoriesTests
ReubenBond
committed
Add timer diagnostic events and TimerDiagnosticObserver for event-driven timer tests
ReubenBond
committed
Fix flaky streaming resume tests with event-driven waiting
ReubenBond
committed
Add ReminderDiagnosticObserver and convert more tests to event-driven waiting
ReubenBond
committed
Add streaming diagnostic events and document progress on determinism initiative
ReubenBond
committed
Fix streaming test flakiness with AlwaysInterleave and polling
ReubenBond
committed
Update PLAN.md: streaming tests now fixed
ReubenBond
committed
Un-skip ElasticityTest_AllSilosCPUTooHigh and ElasticityTest_AllSilosOverloaded
ReubenBond
committed
Fix flaky StatelessWorkerPlacementWithClientRefreshTests (issue #9560)
ReubenBond
committed
Improve TimeoutTests documentation explaining why CallThatShouldHaveBeenDroppedNotExecutedTest remains skipped
ReubenBond
committed
Un-skip ErrorHandlingTimedMethod and PersistentStreamingOverSingleGatewayTest
ReubenBond
committed
Un-skip StatelessWorkerFastActivationsDontFailInMultiSiloDeployment and update skip reasons
ReubenBond
committed
Un-skip more passing tests and clarify skip reasons
ReubenBond
committed
Update PLAN.md with Phase 3: Skipped Test Cleanup progress
ReubenBond
committed
Un-skip extension tests with closed GitHub issues
ReubenBond
committed
Update PLAN.md with Phase 4: Extension Tests Cleanup
ReubenBond
committed
Fix flaky EHStatistics_MonitorCalledAccordingly test
ReubenBond
committed
Clarify skip reasons and document EventHub test verification (Phase 5)
ReubenBond
committed
Improve vague skip reasons with descriptive explanations (Phase 6)
ReubenBond
committed
Replace raw GitHub URLs with descriptive skip reasons in Azure reminder tests
ReubenBond
committed
Fix PluggableQueueBalancer test flakiness (Phase 7)
ReubenBond
committed
Improve skip reasons for Azure Queue and streaming tests (Phase 8)
ReubenBond
committed
Update PLAN.md with Phase 8: Additional Skip Reason Cleanup
ReubenBond
committed
Fix missed raw GitHub URL in Rem_Azure_GT_Basic skip reason
ReubenBond
committed
Add future work items for deterministic testing with DiagnosticListener
ReubenBond
committed
Add placement diagnostic events and improve ElasticPlacement test skip reasons (Phase 9)
ReubenBond
committed
Fix flaky Azure/Cosmos reminder tests with polling-based waiting (Phase 10)
ReubenBond
committed
Fix ElasticPlacement and LeaseBalancer tests with event-driven determinism (Phase 11-12)
ReubenBond
committed
Replace Thread.Sleep polling with event-driven waiting in StreamReliabilityTests
ReubenBond
committed
Replace Thread.Sleep in reminder failure tests with event-driven waiting
ReubenBond
committed
Replace Task.Delay polling with event-driven waiting in TimerOrleansTest
ReubenBond
committed
Update PLAN.md with timer test improvements (Phase 13)
ReubenBond
committed
Document stuck grain test delay and update PLAN.md (Phase 14)
ReubenBond
committed
Make stuck grain detection deterministic with TimeProvider (Phase 15)
ReubenBond
committed
Make activation idle time and rebalancer tests deterministic (Phase 16)
ReubenBond
committed
Add rebalancer diagnostic events for deterministic testing (Phase 17)
ReubenBond
committed
Convert StatePreservationRebalancingTests to event-driven waiting
ReubenBond
committed
Update PLAN.md with Phase 17 completion and Work Item 10
ReubenBond
committed
Fix ActivationCollectorTests FakeTimeProvider integration (Work Item 11)
ReubenBond
committed
Fix ElasticityTest_CatchingUp and ElasticityTest_StoppingSilos (Work Item 12)
ReubenBond
committed
Fix streaming test reliability issues (Work Item 13)
ReubenBond
committed
Fix AsyncTimerFactory constructor calls to use FakeTimeProvider for deterministic testing
ReubenBond
committed
Fix CI test failures
ReubenBond
committed
Fix test timing issues with FakeTimeProvider and real-time execution
ReubenBond
committed
Fix ActivationCollector to use injected TimeProvider for deterministic testing
ReubenBond
committed
Fix Azure test failures: handle communication errors during silo failure tests
ReubenBond
committed
Fix WaitForDeactivationCountAsync to advance FakeTimeProvider during polling
ReubenBond
committed
Improve WaitForReminderTickCountWithEventsAsync reliability
ReubenBond
committed
Fix test timing issues with FakeTimeProvider and polling-based waiting
ReubenBond
committed
Prevent time advancement during busy grain deactivation polling
ReubenBond
committed
Fix test determinism: use real time for busy grain tests, fix reminder test timing
ReubenBond
committed
Fix test flakiness: use consistent tick counting and ensure placement cache sync
ReubenBond
committed

Commits on Jan 7, 2026

Fix test flakiness by enabling FakeTimeProvider for busy grain tests
ReubenBond
committed
Fix ActivationCollector test flakiness and isolation issues
ReubenBond
committed
Reduce grain counts in ManualCollectionShouldNotCollectBusyActivations to 20 each
ReubenBond
committed
Skip flaky ManualCollectionShouldNotCollectBusyActivations and fix stateless worker test
ReubenBond
committed
Fix ManualCollectionShouldNotCollectBusyActivations using TimeProvider-based delay
ReubenBond
committed
Fix ActivationCollectorShouldNotCollectBusyStatelessWorkers inter-iteration cleanup
ReubenBond
committed
Fix Test_Reminders_1J_MultiGrainMultiReminders race condition with FakeTimeProvider
ReubenBond
committed
Fix ElasticityTest_AllSilosOverloaded race condition
ReubenBond
committed
Fix BasicActivation_Reentrant_RecoveryAfterExpiredMessage flakiness
ReubenBond
committed

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