Update to reftools v0.0.12

Author: MikeRalphson

README.md

@@ -98,7 +98,7 @@ To run a test-suite:
 node testRunner [-f {path-to-expected-failures}]... [{path-to-APIs|single-file...}]
 ```
 
-The test harness currently expects files with a `.json` or `.yaml` extension, or a single named file, and has been tested on Node.js versions 4.x, 6.x and 8.7 (it is not recommended to run the test suite under Node.js version 7.x or Node.js versions less than 8.7.0 because of [this bug](https://github.com/nodejs/node/issues/13048)) against
+The test harness currently expects files with a `.json` or `.yaml` extension, or a single named file, and has been tested on Node.js versions 4.x, 6.x and 8.x LTS (it is not recommended to run the test suite under Node.js version 7.x or Node.js versions less than 8.7.0 because of [this bug](https://github.com/nodejs/node/issues/13048)) against
 
 * [APIs.guru](https://github.com/APIs-guru/openapi-directory)
 * [Mermade OpenApi specifications collection](https://github.com/mermade/openapi_specifications)

package-lock.json

@@ -31,7 +31,7 @@
     "js-yaml": "^3.6.1",
     "node-fetch": "^1.6.3",
     "node-readfiles": "^0.2.0",
-    "reftools": "^0.0.10",
+    "reftools": "0.0.12",
     "should": "^13.0.1",
     "yargs": "^9.0.1"
   },

package.json

@@ -282,6 +282,8 @@ function checkSubSchema(schema, parent, state) {
 
 function checkSchema(schema,parent,prop,openapi,options) {
     let state = {};
+    state.depth = 0;
+    state.seen = [];
     state.openapi = openapi;
     state.options = options;
     state.property = prop;

validate.js

@@ -1,13 +1,23 @@
 'use strict';
 
+const util = require('util');
+
 function walkSchema(schema, parent, state, callback) {
 
+    if (typeof state.depth === 'undefined') state = { depth: 0, seen: [], top:true };
     if (typeof schema.$ref !== 'undefined') {
         let temp = {$ref:schema.$ref};
         callback(temp,parent,state);
         return temp; // all other properties SHALL be ignored
     }
     callback(schema,parent,state);
+    if (state.seen.indexOf(schema)>=0) {
+        return schema;
+    }
+    //else
+    state.seen.push(schema);
+    state.top = false;
+    state.depth++;
 
     if (typeof schema.items !== 'undefined') {
         state.property = 'items';
@@ -61,6 +71,7 @@ function walkSchema(schema, parent, state, callback) {
         state.property = 'not';
         walkSchema(schema.not,schema,state,callback);
     }
+    state.depth--;
     return schema;
 }