Support @Skip as a suite-level annotation.

test/runner/runner_test.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.
 
 @TestOn("vm")
 
 import 'dart:io';
 import 'dart:math' as math;
 
 import 'package:path/path.dart' as p;
@@ skipping 333 matching lines @@
 void main() {
   test("timeout", () {});
 }
 ''');
 
     var result = _runUnittest(["test.dart"]);
     expect(result.stdout, contains("Test timed out after 0 seconds."));
     expect(result.stdout, contains("-1: Some tests failed."));
   });
 
+  test("respects top-level @Skip declarations", () {
+    new File(p.join(_sandbox, "test.dart")).writeAsStringSync('''
+@Skip()
+
+import 'dart:async';
+
+import 'package:test/test.dart';
+
+void main() {
+  test("fail", () => throw 'oh no');
+}
+''');
+
+    var result = _runUnittest(["test.dart"]);
+    expect(result.stdout, contains("+0 ~1: All tests skipped."));
+  });
+
   group("flags:", () {
     test("with the --color flag, uses colors", () {
       new File(p.join(_sandbox, "test.dart")).writeAsStringSync(_failure);
       var result = _runUnittest(["--color", "test.dart"]);
       // This is the color code for red.
       expect(result.stdout, contains("\u001b[31m"));
     });
 
     group("with the --name flag,", () {
       test("selects tests with matching names", () {
@@ skipping 98 matching lines @@
       });
     });
   });
 }
 
 ProcessResult _runUnittest(List<String> args) =>
     runUnittest(args, workingDirectory: _sandbox);
 
 ProcessResult _runDart(List<String> args) =>
     runDart(args, workingDirectory: _sandbox);