def test_non_callable(self):
        with pytest.raises(TypeError) as excinfo:
            event.event(123)
        excinfo.match(r"Expected string, callable or None as first argument")

        with pytest.raises(TypeError) as excinfo:
            event.event("name")([])
        excinfo.match(r"Callable must be a function \(`def`\)"
                      r" or coroutine function \(`async def`\)")
def get_snapshot(self, snapshot_id):
        """Returns the details of a single snapshot."""
        url = "snapshots/%s" % str(snapshot_id)
        resp, body = self.get(url)
        body = json.loads(body)
        return resp, body['snapshot']