Require type equality for operation handler input/output types #44
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Replace covariant/contravariant type checking with strict identity checks. Operation handler implementations must now declare the exact same input and output types as the service definition, rather than allowing subtype relationships. This simplifies type validation and makes the type contract more explicit. Also replace dataclass_transform with standard @DataClass decorator in tests.
Remove the now-unused is_subtype function since type checking requires exact type identity. Also fix import ordering in test files to follow PEP 8 conventions. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add missing colon and space in type mismatch error messages - Fix typo: OutputCovarianceImplOutputCannnotBeStrictSuperclass -> OutputCovarianceImplOutputCannotBeStrictSuperclass Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Adds test cases using parameterized types (list[int], dict[str, bool]) to validate that equality comparison (!=) works correctly for type checking. This ensures generic types are properly compared since they create new objects on each evaluation, making identity comparison (is) unreliable. Also adds missing InputContravarianceImplInputCannotBeSubclass to the parametrize list. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Fix stale docstring that described covariance/contravariance - Add tests clarifying that Any requires exact match, not wildcard Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Input/Output Type Changes
is_subtypefunction which is no longer neededVarious Test Cleanup
@dataclass_transform()with@dataclass()decorator in test filesTests
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