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Allow reflected equality for non-pointer objects - #112
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Return NotImplemented for unsupported operand types so Python can try the other object's comparison. This fixes asymmetric equality and inequality with unittest.mock.ANY while preserving ordinary unequal-type fallback. Add tests for both operand orders and unrelated built-in/object types. Co-Authored-By: Claude Code <noreply@anthropic.com>
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No active review issues are recorded for the change enabling reflected equality comparisons with unsupported operand types.
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What changed in this PR
This PR allows JsonPointer comparisons with unsupported types to defer to the other operand’s equality implementation, fixing asymmetric comparisons with unittest.mock.ANY.
Changes:
- Return
NotImplementedfor non-pointer operands, preserving pointer-to-pointer equality and hashing. - Add regression tests for reflected equality and inequality in both operand orders, plus controls for ordinary unrelated types.
| File | Description |
|---|---|
| tests.py | Adds reflected-comparison regressions and unrelated-type controls. |
| jsonpointer.py | Returns NotImplemented for unsupported equality operands. |
Review effort: Balanced
|
coverage: 98.87%. remained the same — wynneyin:fix/reflected-equality into stefankoegl:master |
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JsonPointer.__eq__returnsFalsefor every non-pointer object, preventing Python from trying the other object's comparison. This makesJsonPointer('/a') == unittest.mock.ANYfalse whileANY == JsonPointer('/a')is true;!=is also asymmetric.Return
NotImplementedfor unsupported operand types so reflected comparison can run. Pointer-to-pointer equality and hashing are unchanged. Ordinary strings, numbers,None, and objects still compare unequal through Python's normal fallback.Added regressions for
==and!=with the realunittest.mock.ANYin both operand orders, plus controls for ordinary unrelated types. Before the production change, the comparison suite had 2 failures and 9 passes; after, the complete 96-test suite passed on Python 3.10.19, 3.11.14, 3.12.7, 3.13.9, and 3.14.0 on macOS arm64.Validation also passed: Flake8,
git diff --check, CI-style unittest discovery with coverage (98%), sdist and wheel builds,twine check --strict, installed-wheelmypy.stubtest, and the strict Sphinx HTML build. Setuptools emitted its existing license-classifier deprecation warning. Linux, Windows, and PyPy were not tested locally. Review was inline; no independent reviewer was used.Generated with Claude Code