Split up some slow pub tests and mark some scheduled_test tests as slow.

utils/tests/pub/validator/size_test.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.
+
+import 'dart:async';
+import 'dart:math' as math;
+
+import 'package:scheduled_test/scheduled_test.dart';
+
+import '../../../pub/entrypoint.dart';
+import '../../../pub/validator.dart';
+import '../../../pub/validator/size.dart';
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+import 'utils.dart';
+
+Function size(int size) {
+  return (entrypoint) =>
+      new SizeValidator(entrypoint, new Future.immediate(size));
+}
+
+main() {
+  initConfig();
+
+  setUp(d.validPackage.create);
+
+  integration('should consider a package valid if it is <= 10 MB', () {
+    expectNoValidationError(size(100));
+    expectNoValidationError(size(10 * math.pow(2, 20)));
+  });
+
+  integration('should consider a package invalid if it is more than 10 MB', () {
+    expectValidationError(size(10 * math.pow(2, 20) + 1));
+  });
+}