Coverage for structured_tutorials / models / validators.py: 100%

1# Copyright (c) 2025 Mathias Ertl 

2# Licensed under the MIT License. See LICENSE file for details. 

3 

4"""Validators for various models.""" 

5 

6import re 

7from typing import Any 

8 

9from pydantic import NonNegativeInt 

10 

11 

12def validate_regex(value: Any) -> Any: 

13 """Validate and compile a regular expression.""" 

14 if isinstance(value, str): 

15 return re.compile(value.encode()) 

16 return value # pragma: no cover 

17 

18 

19def validate_count_tuple( 

20 value: tuple[NonNegativeInt | None, NonNegativeInt | None], 

21) -> tuple[NonNegativeInt | None, NonNegativeInt | None]: 

22 """Validate that min is larger than max in a count tuple.""" 

23 count_min, count_max = value 

24 if count_min is not None and count_max is not None and count_min > count_max: 

25 raise ValueError(f"Minimum ({count_min}) is greater than maximum ({count_max}).") 

26 if count_min is None and count_max is None: 

27 raise ValueError("At least one of minimum or maximum must be specified.") 

28 return value