Add metadata to messages emitted by live tests.

lib/src/runner/reporter/json.dart

 // 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.
 
 import 'dart:async';
 import 'dart:convert';
 
 import '../../backend/group.dart';
 import '../../backend/group_entry.dart';
 import '../../backend/live_test.dart';
@@ skipping 136 matching lines @@
     });
 
     /// Convert the future to a stream so that the subscription can be paused or
     /// canceled.
     _subscriptions.add(liveTest.onComplete.asStream().listen((_) =>
         _onComplete(liveTest)));
 
     _subscriptions.add(liveTest.onError.listen((error) =>
         _onError(liveTest, error.error, error.stackTrace)));
 
-    _subscriptions.add(liveTest.onPrint.listen((line) {
+    _subscriptions.add(liveTest.onMessage.listen((message) {
       _emit("print", {
         "testID": id,
-        "message": line
+        "messageType": message.type.name,
+        "message": message.text
       });
     }));
   }
 
   /// Returns an ID for [suite].
   ///
   /// If [suite] doesn't have an ID yet, this assigns one and emits a new event
   /// for that suite.
   int _idForSuite(Suite suite) {
     if (_suiteIDs.containsKey(suite)) return _suiteIDs[suite];
@@ skipping 103 matching lines @@
       GroupEntry entry, TestPlatform platform) {
     var frame = entry.trace?.frames?.first;
     if (!_jsLocations && platform.isJS) frame = null;
 
     map["line"] = frame?.line;
     map["column"] = frame?.column;
     map["url"] = frame?.uri?.toString();
     return map;
   }
 }