          }).then(function() {
            expect(echoAjax.lastResponse).to.be.deep.eql(
                {url: '/echoes_request_url?order=3'});


            // Resolving an out of order stale request after does nothing!
            respondToEchoRequest(server.requests[1]);
            return requests[1].completes;
          }).then(function() {
            expect(echoAjax.lastResponse).to.be.deep.eql(
                {url: '/echoes_request_url?order=3'});
          });
        });

        test('`loading` 