Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/test/lib/src/backend/declarer.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.backend.declarer;
+
+import 'dart:collection';
+
+import '../frontend/timeout.dart';
+import 'group.dart';
+import 'invoker.dart';
+import 'metadata.dart';
+import 'test.dart';
+
+/// A class that manages the state of tests as they're declared.
+///
+/// This is in charge of tracking the current group, set-up, and tear-down
+/// functions. It produces a list of runnable [tests].
+class Declarer {
+  /// The current group.
+  var _group = new Group.root();
+
+  /// The list of tests that have been defined.
+  List<Test> get tests => new UnmodifiableListView<Test>(_tests);
+  final _tests = new List<Test>();
+
+  Declarer();
+
+  /// Defines a test case with the given description and body.
+  void test(String description, body(), {String testOn, Timeout timeout,
+      skip, Map<String, dynamic> onPlatform}) {
+    // TODO(nweiz): Once tests have begun running, throw an error if [test] is
+    // called.
+    var prefix = _group.description;
+    if (prefix != null) description = "$prefix $description";
+
+    var metadata = _group.metadata.merge(new Metadata.parse(
+        testOn: testOn, timeout: timeout, skip: skip, onPlatform: onPlatform));
+
+    var group = _group;
+    _tests.add(new LocalTest(description, metadata, () {
+      // TODO(nweiz): It might be useful to throw an error here if a test starts
+      // running while other tests from the same declarer are also running,
+      // since they might share closurized state.
+
+      // TODO(nweiz): Use async/await here once issue 23497 has been fixed in
+      // two stable versions.
+      return group.runSetUp().then((_) => body());
+    }, tearDown: group.runTearDown));
+  }
+
+  /// Creates a group of tests.
+  void group(String description, void body(), {String testOn,
+      Timeout timeout, skip, Map<String, dynamic> onPlatform}) {
+    var oldGroup = _group;
+
+    var metadata = new Metadata.parse(
+        testOn: testOn, timeout: timeout, skip: skip, onPlatform: onPlatform);
+
+    // Don' load the tests for a skipped group.
+    if (metadata.skip) {
+      _tests.add(new LocalTest(description, metadata, () {}));
+      return;
+    }
+
+    _group = new Group(oldGroup, description, metadata);
+    try {
+      body();
+    } finally {
+      _group = oldGroup;
+    }
+  }
+
+  /// Registers a function to be run before tests.
+  void setUp(callback()) {
+    if (_group.setUp != null) {
+      throw new StateError("setUp() may not be called multiple times for the "
+          "same group.");
+    }
+
+    _group.setUp = callback;
+  }
+
+  /// Registers a function to be run after tests.
+  void tearDown(callback()) {
+    if (_group.tearDown != null) {
+      throw new StateError("tearDown() may not be called multiple times for "
+          "the same group.");
+    }
+
+    _group.tearDown = callback;
+  }
+}