Custom formatter cleanup Fix case where displaying a class constructor generated unreadable huge ou…

pkg/dev_compiler/test/browser/language_tests.js

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 define(['dart_sdk', 'async_helper', 'expect', 'unittest', 'is', 'require'],
       function(dart_sdk, async_helper, expect, unittest, is, require) {
   'use strict';
 
   async_helper = async_helper.async_helper;
   let minitest = expect.minitest;
   let mochaOnError = window.onerror;
   dart_sdk.dart.trapRuntimeErrors(false);
   dart_sdk._isolate_helper.startRootIsolate(function() {}, []);
+  // Make it easier to debug test failures and required for formatter test that
+  // assumes custom formatters are enabled.
+  dart_sdk._debugger.registerDevtoolsFormatter();
+
   let html_config = unittest.html_config;
   // Test attributes are a list of strings, or a string for a single
   // attribute. Valid attributes are:
   //
   //   'pass' - test passes (default)
   //   'skip' - don't run the test
   //   'fail' - test fails
   //   'timeout' - test times out
   //   'slow' - use 5s timeout instead of default 2s.
   //   'helper'  - not a test, used by other tests.
@@ skipping 153 matching lines @@
       'function_subtype_typearg4_test': fail,
       'function_type_alias2_test': fail,
       'function_type_alias3_test': fail,
       'function_type_alias4_test': fail,
       'function_type_alias6_test_none_multi': fail,
       'generic_instanceof_test': fail, // runtime strong mode reject
       'generic_instanceof2_test': fail,
       'generic_is_check_test': fail,
       'getter_closure_execution_order_test': fail,
       'gc_test': 'slow',
-      'hash_code_mangling_test': fail,
       'identical_closure2_test': fail,
       'infinite_switch_label_test': fail,
       'infinity_test': fail,
       'initializing_formal_final_test': fail,
       'instance_creation_in_function_annotation_test': fail,
       'instanceof2_test': fail,
       'instanceof4_test_01_multi': fail,
       'instanceof4_test_none_multi': fail,
       'instanceof_optimized_test': fail,
       'integer_division_by_zero_test': fail,
@@ skipping 660 matching lines @@
 
     for (let action of unittest_tests) {
       try {
         action();
       } catch (e) {
         console.error("Caught error tying to setup test:", e);
       }
     }
   });
 });