Add Type-2 NPI Luhn test cases to us_npi_recognizer tests - #2237
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Add Type-2 NPI Luhn test cases to us_npi_recognizer tests#2237jbisaccia-9 wants to merge 1 commit into
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The parametrized case labeled "Valid NPI starting with 2 (Type 2 = organization)" actually used 1003000126, an NPI starting with 1 (Type 1 = individual) — the recognizer's Type-2 (organization) branch had no dedicated Luhn coverage. Adds: - 2123456784: a genuine Type-2 NPI (starts with 2) that passes the "80840"-prefixed Luhn check per the CMS NPI spec. - 2123456783: the same body with a Luhn-failing check digit, to confirm the recognizer rejects it. Both values were verified against the recognizer's own __npi_luhn_checksum implementation before being added.
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The parametrized case labeled "Valid NPI starting with 2 (Type 2 = organization)"
in tests/test_us_npi_recognizer.py actually used
1003000126, an NPI startingwith
1(Type 1 = individual). The recognizer's Type-2 (organization) branch hadno dedicated Luhn test coverage.
Per the CMS NPI spec, the check digit is a standard Luhn check computed over the
10-digit NPI prefixed with "80840". I verified the following against the
recognizer's own
__npi_luhn_checksumimplementation:2123456784— Type 2 (starts with 2), passes Luhn → should be recognized2123456783— same 9-digit body, invalid check digit, fails Luhn → should befiltered out
This PR adds both cases and fixes the comment on the pre-existing case to
correctly say "Type 1".
No source changes — test-only.