mock responses

lib/middleware.js

@@ -86,20 +86,12 @@ function mockResponses (options) {
         mock = mocks.find(mock => !mock.request)
       }
 
-      const mockedReponse = {}
-      /* resolve any functions on the mock */
-      Object.keys(mock.response).forEach(key => {
-        if (t.isFunction(mock.response[key])) {
-          mockedReponse[key] = mock.response[key](ctx)
-        } else {
-          mockedReponse[key] = mock.response[key]
-        }
-      })
-
       if (mock) {
-        Object.assign(ctx.response, mockedReponse)
-        // debug('mocked response', JSON.stringify(mockedReponse))
-        // debug('actual response', JSON.stringify(ctx.response))
+        let mockedResponse = mock.response
+        if (t.isFunction(mock.response)) {
+          mockedResponse = new mock.response(ctx)
+        }
+        Object.assign(ctx.response, mockedResponse)
       }
     } else {
       return next()