Log verbose output when testing pub.

pkg/scheduled_test/lib/src/utils.dart

 // Copyright (c) 2013, 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.
 
 library utils;
 
 import 'dart:async';
 
 import 'package:stack_trace/stack_trace.dart';
 
@@ skipping 115 matching lines @@
 /// the wrapped stream. Unlike [StreamSubscription], this canceller will send a
 /// "done" message to the wrapped stream.
 Pair<Stream, StreamCanceller> streamWithCanceller(Stream stream) {
   var controller = new StreamController();
   var controllerStream = stream.isBroadcast ?
       controller.stream.asBroadcastStream() :
       controller.stream;
   var subscription = stream.listen((value) {
     if (!controller.isClosed) controller.add(value);
   }, onError: (error) {
-    if (!controller.isClosed) controller.signalError(error);
+    if (!controller.isClosed) controller.addError(error);
   }, onDone: controller.close);
   return new Pair<Stream, StreamCanceller>(controllerStream, controller.close);
 }
 
 // TODO(nweiz): remove this when issue 7787 is fixed.
 /// Creates two single-subscription [Stream]s that each emit all values and
 /// errors from [stream]. This is useful if [stream] is single-subscription but
 /// multiple subscribers are necessary.
 Pair<Stream, Stream> tee(Stream stream) {
   var controller1 = new StreamController();
   var controller2 = new StreamController();
   stream.listen((value) {
     controller1.add(value);
     controller2.add(value);
   }, onError: (error) {
-    controller1.signalError(error);
-    controller2.signalError(error);
+    controller1.addError(error);
+    controller2.addError(error);
   }, onDone: () {
     controller1.close();
     controller2.close();
   });
   return new Pair<Stream, Stream>(controller1.stream, controller2.stream);
 }
 
 /// Takes a simple data structure (composed of [Map]s, [Iterable]s, scalar
 /// objects, and [Future]s) and recursively resolves all the [Future]s contained
 /// within. Completes with the fully resolved structure.
@@ skipping 27 matching lines @@
 }
 
 /// Returns a string representation of [trace] that has the core and test frames
 /// folded together.
 String terseTraceString(StackTrace trace) {
   return new Trace.from(trace).terse.foldFrames((frame) {
     return frame.package == 'scheduled_test' || frame.package == 'unittest' ||
         frame.isCore;
   }).toString().trim();
 }