import pytest
from pydantic import ValidationError

from app.config import Settings


def test_environment_prefix_and_validation(monkeypatch):
    monkeypatch.setenv("MONITOR_CHECK_TIMEOUT_SECONDS", "2.5")
    assert Settings().check_timeout_seconds == 2.5
    with pytest.raises(ValidationError):
        Settings(check_timeout_seconds=0)
    with pytest.raises(ValidationError):
        Settings(max_redirects=99)