add test for first page no items, second page with items

legacy/routes/paging.js

@@ -46,6 +46,7 @@ var paging = function(coverage) {
   coverage['PagingCustomUrlPartialNextLink'] = 0;
   coverage["PagingCustomUrlPartialOperationNextLink"] = 0;
   coverage["PagingReturnModelWithXMSClientName"] = 0;
+  coverage["PagingFirstResponseEmpty"] = 0;
 
   router.get('/noitemname', function(req, res, next) {
     coverage["PagingNoItemName"]++;
@@ -206,6 +207,18 @@ var paging = function(coverage) {
     res.status(200).json({ "values" : [ {"properties":{"id": 1, "name": "Product" }}]});
   });
 
+  router.get('/firstResponseEmpty/:pagenumber', function(req, res, next) {
+    if (req.params.pagenumber == 1) {
+      res.status(200).json({ "values" : [], "nextLink":"/paging/firstResponseEmpty/2"});
+    } else if(req.params.pagenumber == 2) {
+      coverage["PagingFirstResponseEmpty"]++;
+      res.status(200).json({ "value" : [ {"properties":{"id": 1, "name": "Product" }}]});
+    } else {
+      res.status(400).end("Incorrect page number " + req.params.pagenumber + ". Needs to be either 1 for the initial call, or 2 for the final call");
+    }
+  });
+
+
   /*** PAGEABLE LROs ***/
   router.post('/multiple/lro', function (req, res, next) {
     var pollingUri = 'http://localhost:' + utils.getPort() + '/paging/multiple/lro/200';

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@microsoft.azure/autorest.testserver",
-  "version": "2.10.62",
+  "version": "2.10.63",
   "main": "./legacy/startup/www.js",
   "bin": {
     "start-autorest-express": "./.scripts/start-autorest-express.js",

swagger/paging.json

@@ -70,6 +70,24 @@
         }
       }
     },
+    "/paging/firstResponseEmpty/1": {
+      "get": {
+        "x-ms-pageable": { "nextLinkName": "nextLink" },
+        "operationId": "Paging_firstResponseEmpty",
+        "description": "A paging operation whose first response's items list is empty, but still returns a next link. Second (and final) call, will give you an items list of 1.",
+        "responses": {
+          "200": {
+            "description": "First call returns an empty items list, second (and final) call returns an items list of length 1.",
+            "schema": {
+              "$ref": "#/definitions/ProductResultValue"
+            }
+          },
+          "default": {
+            "description": "Unexpected error"
+          }
+        }
+      }
+    },
     "/paging/multiple": {
       "get": {
         "x-ms-pageable": { "nextLinkName": "nextLink", "itemName": "values" },