Fix METGEN004 error message: print return type in ErrorInvalidMethodReturnType
#6905
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Pull Request Overview
This PR fixes the METGEN004 error message to include the actual return type when reporting invalid method return types in the metrics generator. The change improves diagnostics by displaying the problematic return type (e.g., void, object, int) instead of just the method name.
- Updates error diagnostic to show the return type using minimally qualified format
- Adds test coverage to verify the error message includes the return type
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| src/Generators/Microsoft.Gen.Metrics/Parser.cs | Modified error diagnostic to include return type in message instead of method name |
| test/Generators/Microsoft.Gen.Metrics/Unit/ParserTests.cs | Added test assertion to verify error message contains the return type |
dariusclay
approved these changes
Oct 13, 2025
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Alt impls:
returnType.Namewould returnVoid,Object,Int32instead ofvoid,objectandint.SymbolDisplayFormat.MinimallyQualifiedFormatwould return the fully qualified name (i.e.Namespace.OuterClass.InnerClass).Fixes #6719
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