fix missing response example bug in swagger export

lib/exporters/swagger.js

@@ -321,21 +321,25 @@ function mapResponseBody(res, mimeType) {
   return item;
 }
 
+// In Stoplight models endpoint default produces is `[]`. We need to allow it
+// to be `undefined` and we will be able to detect whenever endpoint produces
+// does not inherit environment value or just not exists
 Swagger.prototype._mapResponseBody = function(endpoint, env) {
-  var slResponses = endpoint.Responses;
+  var mimeType = (endpoint.Produces && endpoint.Produces.length) ?
+    endpoint.Produces[0] : null;
 
-  var result = {};
-  for(var i in slResponses) {
-    var res = slResponses[i];
-    var mimeType = (endpoint.Produces && endpoint.Produces.length) ? endpoint.Produces[0]:null;
-    // if (!mimeType && env.Produces && env.Produces.length) {
-    //   mimeType = env.Produces[0];
-    // }
-    var item = mapResponseBody(res, mimeType);
-    result[(res.codes && res.codes.length > 0 && parseInt(res.codes[0]) ? res.codes[0] : 'default')] = item;
+  if (!mimeType && env.Produces && env.Produces.length) {
+    mimeType = env.Produces[0];
   }
 
-  return result;
+  return endpoint.Responses.reduce(function(result, response) {
+    var item = mapResponseBody(response, mimeType);
+
+    result[(response.codes && response.codes.length > 0 &&
+      parseInt(response.codes[0]) ? response.codes[0] : 'default')] = item;
+
+    return result;
+  }, {});
 };
 
 Swagger.prototype._mapRequestBody = function(slRequestBody, requestTypes) {

test/lib/exporters/swagger.js

@@ -425,6 +425,30 @@ describe('Swagger Exporter', function(){
       var res = swaggerExporter._mapResponseBody(endpoint);
       expect(res).to.have.keys('200', '404');
       expect(res).to.have.deep.property('404.schema.$ref', '#/definitions/global:ErrorResponse');
+      expect(res['404'].examples).to.be.deep.equal({
+        'application/json': JSON.parse(endpoint.Responses[1].example)
+      });
+    });
+
+    it('should inherit produces from environment', function() {
+      var endpoint = new Endpoint('test');
+      var environment = new Environment();
+
+      environment.Produces = ['application/json'];
+
+      endpoint.Produces = [];
+      endpoint.Responses = [
+        {
+          codes: ['200'],
+          example: '{"id": 17, "name": "new item"}',
+          description: ''
+        }
+      ];
+      var res = swaggerExporter._mapResponseBody(endpoint, environment);
+      expect(res).to.have.keys('200');
+      expect(res['200'].examples).to.be.deep.equal({
+        'application/json': JSON.parse(endpoint.Responses[0].example)
+      });
     });
   });