Check the features in this application.

def check(self, radl):
        """Check the features in this application."""
        SIMPLE_FEATURES = {
            "name": (str, lambda x, _: bool(x.value)),
            "path": (str, lambda x, _: bool(x.value)),
            "version": (str, is_version),
            "preinstalled": (str, ["YES", "NO"])
        }
        self.check_simple(SIMPLE_FEATURES, radl)