Add a flag controlling how verbose stack traces are.

lib/src/runner/loader.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.
 
 library test.runner.loader;
 
 import 'dart:async';
 import 'dart:io';
 import 'dart:isolate';
 
@@ skipping 15 matching lines @@
 import 'vm/isolate_test.dart';
 
 /// A class for finding test files and loading them into a runnable form.
 class Loader {
   /// All platforms for which tests should be loaded.
   final List<TestPlatform> _platforms;
 
   /// Whether to enable colors for Dart compilation.
   final bool _color;
 
+  /// Global metadata that applies to all test suites.
+  final Metadata _metadata;
+
   /// The root directory that will be served for browser tests.
   final String _root;
 
   /// The package root to use for loading tests.
   final String _packageRoot;
 
   /// The URL for the `pub serve` instance to use to load tests.
   ///
   /// This is `null` if tests should be loaded from the filesystem.
   final Uri _pubServeUrl;
@@ skipping 25 matching lines @@
   /// defaults to the working directory.
   ///
   /// If [packageRoot] is passed, it's used as the package root for all loaded
   /// tests. Otherwise, it's inferred from [root].
   ///
   /// If [pubServeUrl] is passed, tests will be loaded from the `pub serve`
   /// instance at that URL rather than from the filesystem.
   ///
   /// If [color] is true, console colors will be used when compiling Dart.
   ///
+  /// [metadata] is the global metadata for all test suites.
+  ///
   /// If the package root doesn't exist, throws an [ApplicationException].
   Loader(Iterable<TestPlatform> platforms, {String root, String packageRoot,
-        Uri pubServeUrl, bool color: false})
+        Uri pubServeUrl, bool color: false, Metadata metadata})
       : _platforms = platforms.toList(),
         _pubServeUrl = pubServeUrl,
         _root = root == null ? p.current : root,
         _packageRoot = packageRootFor(root, packageRoot),
-        _color = color;
+        _color = color,
+        _metadata = metadata == null ? new Metadata() : metadata;
 
   /// Loads all test suites in [dir].
   ///
   /// This will load tests from files that end in "_test.dart". Any tests that
   /// fail to load will be emitted as [LoadException]s.
   Stream<Suite> loadDir(String dir) {
     return mergeStreams(new Directory(dir).listSync(recursive: true)
         .map((entry) {
       if (entry is! File) return new Stream.fromIterable([]);
 
@@ skipping 17 matching lines @@
     try {
       suiteMetadata = parseMetadata(path);
     } on AnalyzerErrorGroup catch (_) {
       // Ignore the analyzer's error, since its formatting is much worse than
       // the VM's or dart2js's.
       suiteMetadata = new Metadata();
     } on FormatException catch (error, stackTrace) {
       return new Stream.fromFuture(
           new Future.error(new LoadException(path, error), stackTrace));
     }
+    suiteMetadata = _metadata.merge(suiteMetadata);
 
     var controller = new StreamController();
     Future.forEach(_platforms, (platform) {
       if (!suiteMetadata.testOn.evaluate(platform, os: currentOS)) {
         return null;
       }
 
       var metadata = suiteMetadata.forPlatform(platform, os: currentOS);
 
       // Don't load a skipped suite.
@@ skipping 104 matching lines @@
   Future close() {
     for (var isolate in _isolates) {
       isolate.kill();
     }
     _isolates.clear();
 
     if (_browserServerCompleter == null) return new Future.value();
     return _browserServer.then((browserServer) => browserServer.close());
   }
 }