def METHOD_NAME(self, monkeypatch):
    """
    Simulate request parameters returning a UnicodeDecodeError
    """
    class fake_current_app(object):
        def getRequestParams(self):
            # Raise UnicodeDecodeError
            b"\xc0".decode("utf-8")
    monkeypatch.setattr(reply, "current_app", fake_current_app())