"""Pytest configuration and shared fixtures."""

import os

import pytest


@pytest.fixture
def canrisk_pedigree_fixture() -> str:
    """Load the CanRisk pedigree fixture file.

    Returns:
        str: CanRisk v3 pedigree example content used by tests. The fixture
        represents a 42-year-old Ashkenazi woman with BRCA1+BRCA2 mutations
        and family history, expected to yield ~25.2% 10-year breast cancer risk.
    """
    fixture_path = os.path.join(
        os.path.dirname(__file__), "fixtures", "canrisk_pedigree_example.txt"
    )
    with open(fixture_path) as f:
        return f.read().strip()