[Issue#18] - Consistent parsing of all template variables

lib/util.js

@@ -89,23 +89,14 @@ module.exports = {
   * @returns {string} string after replacing /{pet}/ with /:pet/
   */
   fixPathVariablesInUrl: function (url) {
-    /*
-    The first .replace:
-      Handling path templating in request url if any
-      only replace /{pet}<end-of-string> or /{pet}/
-      https://regex101.com/r/Yqm2As/2
-
-    The second .replace:
-      we also need to replace the scheme variables
-      {scheme}://api.com
-      needs to become
-      {{scheme}}://api.com
-      and scheme is already set as a collection variable
-    */
-
+    // All complicated logic removed
+    // This simply replaces all instances of {text} with {{text}}
+    // text cannot have any of these 3 chars: /{}
+    // and {text} cannot be followed by a }
+    // {{text}} will not be converted
+    // https://regex101.com/r/9N1520/1
     return url
-      .replace(/\/\{([a-zA-Z0-9\-\_]+)\}(\/|$)/g, '/:$1$2')
-      .replace(/^\{([a-zA-Z0-9\-\_]+)\}\:/, '{{$1}}:');
+      .replace(/(\{[^\/\{\}]+\})(?!\})/g, '{$1}');
   },
 
   /**