filter out empty responses in mockResponse

lib/helpers/util.js

@@ -171,18 +171,17 @@ exports.getAllowedMethods = function(path) {
  * sorted by response code ("default" comes last).
  */
 exports.getResponsesBetween = function(operation, min, max) {
-  return _.map(operation.responses,
-    function(response, responseCode) {
+  return _(operation.responses)
+    .omit(_.isEmpty)
+    .map(function(response, responseCode) {
       return {
         code: parseInt(responseCode) || responseCode,
         api: response
       };
     })
-    .sort(function(a, b) {
+    .sortBy(function(response) {
       // Sort by response code.  "default" comes last.
-      a = _.isNumber(a.code) ? a.code : 999;
-      b = _.isNumber(b.code) ? b.code : 999;
-      return a - b;
+      return _.isNumber(response.code) ? response.code : Number.POSITIVE_INFINITY;
     })
     .filter(function(response) {
       return (response.code >= min && response.code <= max) || _.isString(response.code);

lib/mock/index.js

@@ -92,11 +92,18 @@ function mock(context, router, dataStore) {
         }
       }
       else {
-        // There is no response with a 2XX or 3XX code, so just use the first one
-        var keys = Object.keys(req.swagger.operation.responses);
-        util.debug('Using %s response for %s %s', keys[0], req.method, req.path);
-        response = req.swagger.operation.responses[keys[0]];
-        res.status(parseInt(keys[0]));
+        // There is no response with a 2XX or 3XX code, so just use the first non-empty one
+        var responseCodes = Object.keys(_.omit(req.swagger.operation.responses, _.isEmpty));
+
+        if (responseCodes.length > 0) {
+          var responseCode = responseCodes[0];
+          util.debug('Using %s response for %s %s', responseCode, req.method, req.path);
+          response = req.swagger.operation.responses[responseCode];
+          res.status(parseInt(responseCode));
+        } else {
+          next();
+          return;
+        }
       }
     }
 
@@ -162,7 +169,7 @@ function mockResponseHeaders(req, res, next) {
           if (!name || !_.isFunction(name.toLowerCase)) {
             return;
           }
-          
+
           switch (name.toLowerCase()) {
             case 'location':
               res.location(req.baseUrl + (res.swagger.location || req.path));