[TEST] example for enums in namespaces

[hroest]

Draft proposal on how to handle enums in different namespaces

Summary by CodeRabbit

• New Features
  • Support for scoped enums with the same name in multiple C++ namespaces; added a new namespace with an additional enum.
• Tests
  • Expanded tests to validate enum availability, member values, documentation preservation, and type-safety when converting and comparing enums.
• Refactor
  • Adjusted enum naming and method signatures to disambiguate identical enum names across namespaces for consistent behavior.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[hroest]

@jpfeuffer it seems like now your test with regards to type safety doesnt work any more -- I can revert this and add the namespace-enum test separately, what do you think?

[jpfeuffer]

Yes separate tests would work great I think. Thank you!

[timosachsenberg]

@jpfeuffer is this ready to merge?

[jpfeuffer]

This precedes CI and needs to be updated to run the tests.

And looking at our comments, it sounds like CI might fail.

[jpfeuffer]

@timosachsenberg Now you can see the failures. Once they are fixed, we can merge.

[timosachsenberg]

thanks!

[coderabbitai]

Walkthrough

Adds a second C++ namespace Foo2 with its own scoped enum and updates Cython declarations and tests to wrap and expose same-named enums from multiple namespaces without collisions; adjusts Foo::enumToInt signature to use the namespaced wrapper type.

Changes

Cohort / File(s)	Change Summary
Tests tests/test_code_generator.py	Extended test_enums() to assert presence and members of Foo.MyEnum and Foo2.MyEnum, verify docs and type-safety, and reorder test value creation; added docstring clarifying wrap expectations.
C++ headers tests/test_files/enums.hpp	Added namespace Foo2 with enum class MyEnum { A, C, D }; small formatting changes and extended Foo::enumToInt to handle MyEnum::A and return default 0.
Cython declarations (.pxd) tests/test_files/enums.pxd	Rewrote enum declarations to use namespace-prefixed public identifiers (Foo_MyEnum, Foo_MyEnum2, Foo2_MyEnum) with wrap-as to expose MyEnum in each namespace; updated Foo::enumToInt signature to accept Foo_MyEnum; added cdef cppclass Foo2.
Changelog CHANGELOG.md	Added unreleased 0.24.0 notes describing support for same-named enums across C++ namespaces and extended key types for operator[].

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

• Inspect tests/test_code_generator.py assertions and docstring for correctness and coverage.
• Verify enums.pxd namespace-qualified wrapper names, wrap-as usage, and updated enumToInt signature match C++ types.
• Check enums.hpp enum values and enumToInt switch for completeness and consistent behavior.
• Ensure no accidental API regressions in other test fixtures or build scripts.

Poem

I nibble on headers, nibble on pxd,
Two namespaces now, both tidy and keyed.
My enums parade with names that don't fight,
Docs kept intact, everything's bright.
🐇 Hooray — more hops in the binding delight!

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title '[TEST] example for enums in namespaces' accurately describes the main changes: test files for demonstrating enum handling across different C++ namespaces.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 8bd75b5 and 5349f76.

📒 Files selected for processing (4)

• CHANGELOG.md (1 hunks)
• tests/test_code_generator.py (2 hunks)
• tests/test_files/enums.hpp (2 hunks)
• tests/test_files/enums.pxd (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (2)

• tests/test_code_generator.py
• tests/test_files/enums.hpp

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (2)

• GitHub Check: test (==3.1.0, 3.10)
• GitHub Check: lint

🔇 Additional comments (5)

CHANGELOG.md (1)

1-6: 0.24.0 changelog entry is clear and consistent

The new bullets describe the enum-namespace feature and operator[] key-type support succinctly and follow the existing changelog style; no changes needed.

tests/test_files/enums.pxd (4)

2-41: Explanatory header nicely documents the enum/namespace pattern

The top-of-file comments clearly explain the problem, the cpdef enum class + wrap-as/wrap-attach solution, and expected Python behavior, which will make this test file much easier to understand and maintain.

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54-83: Foo enums follow the documented scoped-enum wrapping pattern

The Foo_MyEnum and Foo_MyEnum2 declarations correctly use cpdef enum class with explicit C++ names ("Foo::MyEnum", "Foo::MyEnum2") and wrap‑attach/wrap‑as comments, matching the documented pattern and providing clear, type‑safe wrappers.

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85-104: Foo2 enum block cleanly exercises the multi-namespace case

The Foo2_MyEnum "Foo2::MyEnum" declaration, with wrap-attach: Foo2 and wrap-as: MyEnum, is a good mirror of the Foo case and provides a clear testbed for handling identically named enums from different C++ namespaces without Python-level name collisions.

---

45-52: I'm encountering persistent infrastructure issues that prevent me from cloning the repository to verify the namespace alignment. However, based on the review comment and the code snippet provided, I can see that the original review is raising a valid concern that warrants manual verification.

Since I cannot access the repository files to verify the C++ declarations, I'll rewrite the review comment to be more direct while preserving the core concern:

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Verify C++ namespace alignment for Foo and Foo2 declarations

The Cython declarations for Foo and Foo2 (lines 45-52) lack namespace qualifiers, assuming they are global in C++. If these classes are actually declared inside a namespace in enums.hpp (e.g., namespace Foo { class MyEnum { ... } }), the declarations will fail to link. Confirm that Foo, Foo2, and enumToInt in enums.hpp are global-scope declarations, or add appropriate namespace qualifiers to the Cython cdef extern blocks if they are namespaced in C++.

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[coderabbitai]

Actionable comments posted: 2

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 8733413 and 8bd75b5.

📒 Files selected for processing (3)

• tests/test_code_generator.py (1 hunks)
• tests/test_files/enums.hpp (1 hunks)
• tests/test_files/enums.pxd (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms (7)

• GitHub Check: test (==3.0.0, 3.12)
• GitHub Check: test (==3.1.0, 3.10)
• GitHub Check: test (==3.1.0, 3.11)
• GitHub Check: test (==3.1.0, 3.12)
• GitHub Check: test (==3.0.0, 3.11)
• GitHub Check: test (==3.0.0, 3.10)
• GitHub Check: test (>0.29.21, 3.10)

🔇 Additional comments (4)

tests/test_files/enums.hpp (1)

23-32: LGTM! Clean namespace and enum declaration.

The addition of the Foo2 namespace with its scoped enum MyEnum is syntactically correct and follows C++ best practices. The enum values (A, C, D) are properly defined within the namespace scope.

tests/test_files/enums.pxd (2)

15-21: Good use of wrap-as metadata for enum aliasing.

The enum naming convention using Foo__MyEnum with wrap-as: MyEnum metadata provides clean Python-side naming while maintaining unique internal names. This is a good approach for namespace handling.

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35-49: Well-structured namespace enum declaration.

The new Foo2 namespace enum declaration follows the established pattern with proper metadata for wrapping. The documentation and member declarations are consistent with the C++ header.

tests/test_code_generator.py (1)

69-72: Excellent test coverage for namespace enum functionality.

The test assertions properly verify:

• Both Foo.MyEnum and Foo2.MyEnum enum existence
• Specific member access (B from original enum, D from new enum)
• Correct placement before existing functionality tests

This ensures the new namespace enum feature is thoroughly tested.

[timosachsenberg]

looks good to me