EF Core dev-time improvements (GH-2539)#2543
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jeremydmiller merged 1 commit intomainfrom Apr 20, 2026
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Makes the EF Core dev-loop faster and more discoverable:
- Auto-register Weasel's DatabaseCleaner<> (open generic) inside
UseEntityFrameworkCoreTransactions(). Callers no longer need a
per-context services.AddDatabaseCleaner<T>() — resolving
IDatabaseCleaner<T> / DatabaseCleaner<T> just works.
- New IHost.ResetAllDataAsync<T>() extension for finer-grained
per-DbContext test teardown. Creates its own scope, resolves the
DbContext first, then the cleaner, then runs delete+reseed.
- New documentation:
* docs/guide/durability/efcore/index.md — Development-time usage
section covering Weasel migrations vs EF Core migrations,
IInitialData mention, and reset guidance.
* docs/guide/durability/efcore/initial-data.md — IInitialData<T>
patterns: class-based vs lambda, layered seeders, idempotency,
when not to use.
* docs/guide/durability/efcore/batch-queries.md — four handler
patterns for the Wolverine batching story, with locally measured
perf numbers (2.78x speedup, 4-query handler) and links out to
Weasel's fluent BatchedQuery reference.
- Weasel link sweep: replaced github.com links with
https://weasel.jasperfx.net/... where applicable.
- ItemService sample: SeedSampleItems IInitialData<ItemsDbContext>
registered via AddInitialData<TContext, TData>(), with a comment
showing the Weasel 8.14 lambda overload.
- Bumps Weasel.* package references to 8.14.0 to pick up the new
LambdaInitialData<T> + AddInitialData lambda overload
(JasperFx/weasel#250).
Tests: 7/7 pass for the cleaner-related suite
(auto_database_cleaner_registration_tests + database_cleaner_usage_tests).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
6 tasks
This was referenced Apr 21, 2026
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Summary
Ships the four bullets in #2539 except bullet 3 (Specification docs — already shipped):
DatabaseCleaner<>insideUseEntityFrameworkCoreTransactions(). No more per-contextservices.AddDatabaseCleaner<T>(). SeeWolverineEntityCoreExtensions.cs.IHost.ResetAllDataAsync<T>()extension — finer-grained test teardown thanhost.ResetResourceState(). SeeHostResetExtensions.cs.docs/guide/durability/efcore/index.md— Development-time usage section (Weasel migrations,IInitialDataoverview, reset guidance).docs/guide/durability/efcore/initial-data.md— new page onIInitialData<T>patterns.docs/guide/durability/efcore/batch-queries.md— new page on Wolverine's handler-level batch-query patterns with inline perf numbers.github.com/JasperFx/weasellinks withhttps://weasel.jasperfx.net/...where appropriate.ItemServicenow registers aSeedSampleItems : IInitialData<ItemsDbContext>so users browsing the sample see the new pattern in context. A comment shows the Weasel 8.14 lambda overload.Package bump
Weasel.*8.13.0 → 8.14.0 (brings inLambdaInitialData<T>+AddInitialData<T>(Func<T, CancellationToken, Task>)from JasperFx/weasel#250).Performance numbers in batch-queries.md
Measured locally against SQL Server with 4 keyed lookups per iteration:
awaitsBatchedQuerySpeedup scales with number of queries per handler and with network latency.
Test plan
dotnet test --framework net9.0 --filter "FullyQualifiedName~auto_database_cleaner|FullyQualifiedName~database_cleaner_usage"→ 7/7 passdotnet buildonWolverineFx.EntityFrameworkCore,EfCoreTests,ItemService— cleanRelated
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