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#
#   http://www.apache.org/licenses/LICENSE-2.0
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from datafusion import Config
import pytest


@pytest.fixture
def config():
    return Config()


def test_get_then_set(config):
    config_key = "datafusion.optimizer.filter_null_join_keys"

    assert config.get(config_key).as_py() is False

    config.set(config_key, True)
    assert config.get(config_key).as_py() is True


def test_get_all(config):
    config.get_all()


def test_get_invalid_config(config):
    assert config.get("not.valid.key") is None