import pytest
from django.core.exceptions import ImproperlyConfigured
from settings.base import _env_bool


def test_env_bool_uses_explicit_default(monkeypatch):
    monkeypatch.delenv("TEST_BOOLEAN_FLAG", raising=False)

    assert _env_bool("TEST_BOOLEAN_FLAG", default=True) is True
    assert _env_bool("TEST_BOOLEAN_FLAG", default=False) is False


def test_env_bool_accepts_supported_false_values(monkeypatch):
    for value in ("0", "false", "NO", " off "):
        monkeypatch.setenv("TEST_BOOLEAN_FLAG", value)
        assert _env_bool("TEST_BOOLEAN_FLAG", default=True) is False


def test_env_bool_accepts_supported_true_values(monkeypatch):
    for value in ("1", "true", "YES", " on "):
        monkeypatch.setenv("TEST_BOOLEAN_FLAG", value)
        assert _env_bool("TEST_BOOLEAN_FLAG", default=False) is True


def test_env_bool_rejects_ambiguous_values(monkeypatch):
    monkeypatch.setenv("TEST_BOOLEAN_FLAG", "enabled")

    with pytest.raises(ImproperlyConfigured, match="TEST_BOOLEAN_FLAG must be one of"):
        _env_bool("TEST_BOOLEAN_FLAG", default=True)