Coverage for astrocyte/_validation.py: 100%

1"""Shared validation helpers — used by _astrocyte.py and _policy.py.""" 

2 

3from __future__ import annotations 

4 

5import re 

6 

7from astrocyte.errors import ConfigError 

8 

9_BANK_ID_RE = re.compile(r"^[a-zA-Z0-9][a-zA-Z0-9._:@\-]{0,254}$") 

10 

11 

12def validate_bank_id(bank_id: str) -> None: 

13 """Validate bank_id format: 1–255 chars, alphanumeric start, safe characters only.""" 

14 if not bank_id or not _BANK_ID_RE.match(bank_id): 

15 raise ConfigError( 

16 f"Invalid bank_id {bank_id!r}: must be 1–255 characters, " 

17 "start with alphanumeric, and contain only [a-zA-Z0-9._:@-]" 

18 )