from django.test import override_settings

from infrasynth.shared.settings_utils import get_setting


class TestGetSetting:
    def test_returns_value_when_key_exists(self):
        with override_settings(INFRASYNTH_TEST={"MY_KEY": "hello"}):
            result = get_setting("INFRASYNTH_TEST", "MY_KEY")
            assert result == "hello"

    def test_returns_default_when_prefix_missing(self):
        result = get_setting("NONEXISTENT_PREFIX", "SOME_KEY", 42)
        assert result == 42

    def test_returns_default_when_key_missing(self):
        with override_settings(INFRASYNTH_TEST={"EXISTING": "val"}):
            result = get_setting("INFRASYNTH_TEST", "MISSING_KEY", "fallback")
            assert result == "fallback"

    def test_returns_none_when_no_default(self):
        with override_settings(INFRASYNTH_TEST={}):
            result = get_setting("INFRASYNTH_TEST", "MISSING_KEY")
            assert result is None

    def test_works_with_nested_dict(self):
        config = {"NESTED": {"key": "deep"}}
        with override_settings(INFRASYNTH_TEST=config):
            result = get_setting("INFRASYNTH_TEST", "NESTED")
            assert result == {"key": "deep"}

    def test_with_real_infrasynth_setting(self):
        result = get_setting("INFRASYNTH_SECURITY", "COOKIE_SECURE")
        assert result is not None
        assert isinstance(result, bool)