Implement should().message() for in-task message display

third_party/WebKit/LayoutTests/webaudio/resources/audit.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 /**
  * @fileOverview  WebAudio layout test utility library. Built around W3C's
  *                testharness.js. Includes asynchronous test task manager,
  *                assertion utilities.
  * @dependency    testharness.js
@@ skipping 869 matching lines @@
         failDetail += '\n'
             + '\tMax AbsError of ' + maxAbsError.toExponential(16)
             + ' at index of ' + maxAbsErrorIndex + '.\n'
             + '\tMax RelError of ' + maxRelError.toExponential(16)
             + ' at index of ' + maxRelErrorIndex + '.';
       }
 
       return this._assert(passed, passDetail, failDetail);
     }
 
+    /**
+     * A temporary escape hat for printing an in-task message. The description
+     * for the |actual| is required to get the message printed properly.
+     *
+     * TODO(hongchan): remove this method when the transition from the old Audit
+     * to the new Audit is completed.
+     * @example
+     *   should(true, 'The message is').message('truthful!', 'false!');
+     *
+     * @result
+     *   "PASS   The message is truthful!"
+     */
+    message(passDetail, failDetail) {
+      return this._assert(this._actual,
+                          '${actual} ' + passDetail,
+                          '${actual} ' + failDetail);
+    }
   }
 
 
   // Task Class state enum.
   const TaskState = {
     PENDING: 0,
     STARTED: 1,
     FINISHED: 2
   };
 
@@ skipping 206 matching lines @@
         _logError('this test requires the explicit comparison with the '
             + 'expected result when it runs with run-webkit-tests.');
       }
 
       return new TaskRunner();
     }
 
   };
 
 })();