Function expect_exception

tests/test_basic.py:364–366

(f, *args, **kwargs)

    app.secret_key = None

    def expect_exception(f, *args, **kwargs):
        e = pytest.raises(RuntimeError, f, *args, **kwargs)
        assert e.value.args and "session is unavailable" in e.value.args[0]

    with app.test_request_context():
        assert flask.session.get("missing_key") is None