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Return copied backend capability rows #3700

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Return copied backend capability rows #3700

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3d432f3
Return copies from backend capability iterator
FlorianPfaff Jul 2, 2026
873fe54
Test backend capability iterator copies
FlorianPfaff Jul 2, 2026
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4 changes: 3 additions & 1 deletion src/pyrecest/_backend/capabilities.py
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Original file line number Diff line number Diff line change
Expand Up @@ -203,7 +203,9 @@ def get_api_backend_support(api_name: str) -> dict[str, str]:

def iter_api_backend_capabilities() -> tuple[tuple[str, dict[str, str]], ...]:
"""Return public API backend support rows in a stable order."""
return tuple(sorted(API_BACKEND_CAPABILITIES.items()))
return tuple(
(api_name, dict(row)) for api_name, row in sorted(API_BACKEND_CAPABILITIES.items())
)


def validate_api_backend_capabilities() -> tuple[str, ...]:
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9 changes: 9 additions & 0 deletions tests/test_backend_capabilities.py
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Expand Up @@ -20,6 +20,15 @@ def test_api_backend_capability_rows_have_valid_support_levels() -> None:
assert support.get("notes")


def test_iter_api_backend_capabilities_returns_row_copies() -> None:
api_name, support = iter_api_backend_capabilities()[0]
original_notes = API_BACKEND_CAPABILITIES[api_name]["notes"]

support["notes"] = "mutated by caller"

assert API_BACKEND_CAPABILITIES[api_name]["notes"] == original_notes


def test_cli_backends_reports_machine_readable_capabilities(capsys) -> None:
assert cli_main(["backends"]) == 0
payload = json.loads(capsys.readouterr().out)
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