perf(engine): hoist GetParameters and drop LINQ in reflection discovery by thomhurst · Pull Request #6063 · thomhurst/TUnit (original) (raw)

Hoist ctor.GetParameters() out of the CreateReflectionInstanceFactory lambda.
Hoist testMethod.GetParameters() out of CreateReflectionTestInvoker for the non-generic case (generic-method-definition path still resolves per call because methodToInvoke may differ per invocation).
Replace types.Where(...) at the head of DiscoverTestsInAssembly and DiscoverTestsInAssemblyStreamingAsync with inline foreach + continue to avoid the WhereArrayIterator allocation per discovery pass.
In the streaming path, drop the .Where(...) over methods and inline the TestAttribute/IsAbstract predicate into the existing foreach so testMethods stays as the raw MethodInfo[] with no LINQ enumerator wrapping it.

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thomhurst deleted the perf/reflection-discovery-hot-path branch

May 28, 2026 17:00

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May 29, 2026

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