Add Amazon.Lambda.DurableExecution.Testing design doc#2412
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GarrettBeatty wants to merge 2 commits into
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Add Amazon.Lambda.DurableExecution.Testing design doc#2412GarrettBeatty wants to merge 2 commits into
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Spec for a testing SDK companion to Amazon.Lambda.DurableExecution: local DurableTestRunner with in-memory orchestration, CloudDurableTestRunner for integration tests, step inspection API, sibling-function registration, and safety limits. Adopts the IDurableServiceClient seam (Approach B) that Python and JavaScript reference SDKs converged on.
The "Approach A vs B vs C" framing only made sense in the brainstorming chat where the alternatives had been spelled out earlier. The committed spec should present the chosen design directly and explain why the service-client interface is right on its own merits.
GarrettBeatty
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Jun 9, 2026
| - `Amazon.Lambda.TestUtilities` (project reference) — `TestLambdaContext`, `TestLambdaLogger` for the runner's `ILambdaContext` substitute. | ||
| - `Amazon.Lambda.Serialization.SystemTextJson` (package reference) — `DefaultLambdaJsonSerializer` is the fallback when `TestRunnerOptions.Serializer` is null. | ||
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| ### Interception strategy: `IDurableServiceClient` seam |
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injecting this interface seemed like the best way. the other option was to override/implement some custom ILambdaServiceClient (because we already have an overload to pass that in) but this seemed better
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Spec for a testing SDK companion to Amazon.Lambda.DurableExecution: local DurableTestRunner with in-memory orchestration, CloudDurableTestRunner for integration tests, step inspection API, sibling-function registration, and safety limits. Adopts the IDurableServiceClient seam (Approach B) that Python and JavaScript reference SDKs converged on.
Issue #, if available:
#2216
Description of changes:
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