Use deterministic randomness in ExampleGenerator. (#5068)

* Update samples for nodejs + nodejs-google-cloud-functions.

* Fix example generator to use deterministic randomness.

This avoids changing results after each generation, and makes diff reviews easier.

* Update NodeJS samples.

This is the last "randomness" update. From now on the samples should only change if either the generator, the input or parameters change.

samples/server/petstore/nodejs/.swagger-codegen-ignore

@@ -0,0 +1,23 @@
+# Swagger Codegen Ignore
+# Generated by swagger-codegen https://github.com/swagger-api/swagger-codegen
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell Swagger Codgen to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

samples/server/petstore/nodejs/api/swagger.yaml

@@ -108,11 +108,11 @@ paths:
         type: "array"
         items:
           type: "string"
-          default: "available"
           enum:
           - "available"
           - "pending"
           - "sold"
+          default: "available"
         collectionFormat: "csv"
       responses:
         200:
@@ -356,8 +356,8 @@ paths:
         description: "ID of pet that needs to be fetched"
         required: true
         type: "integer"
-        maximum: 5.0
-        minimum: 1.0
+        maximum: 5
+        minimum: 1
         format: "int64"
       responses:
         200:

samples/server/petstore/nodejs/controllers/PetService.js

@@ -35,14 +35,14 @@ exports.findPetsByStatus = function(args, res, next) {
   examples['application/json'] = [ {
   "photoUrls" : [ "aeiou" ],
   "name" : "doggie",
-  "id" : 1,
+  "id" : 0,
   "category" : {
     "name" : "aeiou",
-    "id" : 7
+    "id" : 6
   },
   "tags" : [ {
     "name" : "aeiou",
-    "id" : 2
+    "id" : 1
   } ],
   "status" : "available"
 } ];
@@ -66,14 +66,14 @@ exports.findPetsByTags = function(args, res, next) {
   examples['application/json'] = [ {
   "photoUrls" : [ "aeiou" ],
   "name" : "doggie",
-  "id" : 9,
+  "id" : 0,
   "category" : {
     "name" : "aeiou",
-    "id" : 7
+    "id" : 6
   },
   "tags" : [ {
     "name" : "aeiou",
-    "id" : 4
+    "id" : 1
   } ],
   "status" : "available"
 } ];
@@ -97,14 +97,14 @@ exports.getPetById = function(args, res, next) {
   examples['application/json'] = {
   "photoUrls" : [ "aeiou" ],
   "name" : "doggie",
-  "id" : 4,
+  "id" : 0,
   "category" : {
     "name" : "aeiou",
-    "id" : 4
+    "id" : 6
   },
   "tags" : [ {
     "name" : "aeiou",
-    "id" : 4
+    "id" : 1
   } ],
   "status" : "available"
 };
@@ -152,7 +152,7 @@ exports.uploadFile = function(args, res, next) {
    **/
   var examples = {};
   examples['application/json'] = {
-  "code" : 7,
+  "code" : 0,
   "type" : "aeiou",
   "message" : "aeiou"
 };

samples/server/petstore/nodejs/controllers/StoreService.js

@@ -40,9 +40,9 @@ exports.getOrderById = function(args, res, next) {
    **/
   var examples = {};
   examples['application/json'] = {
-  "petId" : 2,
-  "quantity" : 9,
-  "id" : 5,
+  "petId" : 6,
+  "quantity" : 1,
+  "id" : 0,
   "shipDate" : "2000-01-23T04:56:07.000+00:00",
   "complete" : false,
   "status" : "placed"
@@ -65,9 +65,9 @@ exports.placeOrder = function(args, res, next) {
    **/
   var examples = {};
   examples['application/json'] = {
-  "petId" : 5,
-  "quantity" : 5,
-  "id" : 1,
+  "petId" : 6,
+  "quantity" : 1,
+  "id" : 0,
   "shipDate" : "2000-01-23T04:56:07.000+00:00",
   "complete" : false,
   "status" : "placed"

samples/server/petstore/nodejs/controllers/UserService.js

@@ -57,9 +57,9 @@ exports.getUserByName = function(args, res, next) {
   "firstName" : "aeiou",
   "lastName" : "aeiou",
   "password" : "aeiou",
-  "userStatus" : 4,
+  "userStatus" : 6,
   "phone" : "aeiou",
-  "id" : 5,
+  "id" : 0,
   "email" : "aeiou",
   "username" : "aeiou"
 };