fix scenario only for */*

Author: LuisTejedaS

lib/schemaUtils.js

@@ -100,7 +100,8 @@ const { formatDataPath, checkIsCorrectType, isKnownType } = require('./common/sc
   { compareVersion } = require('./common/versionUtils.js'),
   parse = require('./parse'),
   { getBundleContentAndComponents, parseFileOrThrow } = require('./bundle.js'),
-  MULTI_FILE_API_TYPE_ALLOWED_VALUE = 'multiFile';
+  MULTI_FILE_API_TYPE_ALLOWED_VALUE = 'multiFile',
+  MEDIA_TYPE_ALL_RANGES = '*/*';
   /* eslint-enable */
 
 // See https://github.com/json-schema-faker/json-schema-faker/tree/master/docs#available-options
@@ -1375,14 +1376,20 @@ module.exports = {
       responseBody = JSON.stringify(responseBody, null, options.indentCharacter);
     }
     else if (typeof responseBody !== 'string') {
-      if (!_.isObject(responseBody) && _.isFunction(_.get(responseBody, 'toString'))) {
-        responseBody = responseBody.toString();
+      if (cTypeHeader === MEDIA_TYPE_ALL_RANGES) {
+        if (!_.isObject(responseBody) && _.isFunction(_.get(responseBody, 'toString'))) {
+          responseBody = responseBody.toString();
+        }
+        else {
+          responseBody = JSON.stringify(responseBody, null, options.indentCharacter);
+          isJsonLike = true;
+        }
       }
       else {
-        responseBody = JSON.stringify(responseBody, null, options.indentCharacter);
-        isJsonLike = true;
+        responseBody = '';
       }
     }
+
     return {
       contentTypeHeader: cTypeHeader,
       responseBody: responseBody,