Migrate from MediatR to TimeWarp.Mediator and modernize codebase#567
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StevenTCramer merged 23 commits intoJan 22, 2026
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- Create tests/client-integration-tests/store/ directory - Add store-lifecycle-tests.cs with 8 tests covering: - GetState: same instance on repeated calls, different instances for different types, initialization on first access - Reset: creates new instance after reset - RemoveState: creates new instance after removal - PreviousState: null before actions, tracks state after action, new Guid after action - Add global using for Blue namespace - All tests passing
- Create tests/client-integration-tests/subscriptions/ directory - Add subscriptions-tests.cs with 6 tests covering: - Add subscription and trigger re-render - Prevent duplicate subscriptions for same component/state - Remove all subscriptions for a component - Respect ShouldReRender return value - Only re-render matching state type subscribers - Re-render multiple components for same state - Add Subscriptions property to BaseTest - Add Counter namespace to global-usings.cs - All 6 tests passing (previously zero coverage)
- Create tests/client-integration-tests/pipeline/ directory - Add state-transaction-tests.cs with 5 tests covering: - Clone state before handler executes - Preserve changes on successful action - Rollback state on exception - Publish exception notification on exception - Continue working after exception - All 5 tests passing
- Create action-tracking-tests.cs in pipeline/ directory with 4 tests: - NotBeActive_Initially - TrackAction_DuringExecution - ReturnFalse_ForUnknownActionType - TrackMultipleActions_Independently - Update testing-convention.cs to include TimeWarp.State.Plus assembly and ActiveActionBehavior - Add ActionTracking and Purple namespaces to global-usings.cs - Fix flaky store lifecycle test affected by test execution order - All 4 action tracking tests passing
- Create tests/client-integration-tests/caching/ directory - Add cacheable-state-tests.cs with 4 tests: - HaveNullCacheKey_Initially - SetCacheKey_AfterFetch - SetTimestamp_AfterFetch - ReturnCachedData_WhenCacheValid - All 4 tests passing
- Create render-subscription-context-tests.cs in pipeline/ directory with 4 tests: - ReturnTrue_ForUnregisteredAction - ReturnFalse_WhenRegisteredWithFalse - ReturnTrue_WhenRegisteredWithTrue - ReturnTrue_AfterReset - Add RenderSubscriptionContext property to BaseTest - Add global using for TimeWarp.Features.RenderSubscriptions - All 4 tests passing
Update package references to migrate from TimeWarp.Mediator to the martinothamar/Mediator library: - Directory.Packages.props: Add Mediator.Abstractions and Mediator.SourceGenerator 3.0.1 - timewarp-state.csproj: Replace TimeWarp.Mediator with Mediator packages - test-app-contracts.csproj: Replace TimeWarp.Mediator with Mediator.Abstractions - Use explicit versions (3.0.1) due to CPM NU1011 floating version restriction Also standardize kanban placeholder files to .gitkeep convention
StevenTCramer
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Cramer/2025-08-12/032migrate-from-mediatr-to-timewarp-mediator
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January 22, 2026 18:57
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Summary
Key Changes
Breaking Changes