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

utils/tests/pub/validator/utf8_readme_test.dart

Index: utils/tests/pub/validator/utf8_readme_test.dart
diff --git a/utils/tests/pub/validator/utf8_readme_test.dart b/utils/tests/pub/validator/utf8_readme_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..8d63c784fb3b2895d2fafb2e3c9503de9847a163
--- /dev/null
+++ b/utils/tests/pub/validator/utf8_readme_test.dart
@@ -0,0 +1,43 @@
+// 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 'package:scheduled_test/scheduled_test.dart';
+
+import '../../../pub/entrypoint.dart';
+import '../../../pub/validator.dart';
+import '../../../pub/validator/utf8_readme.dart';
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+import 'utils.dart';
+
+Validator utf8Readme(Entrypoint entrypoint) =>
+  new Utf8ReadmeValidator(entrypoint);
+
+main() {
+  initConfig();
+
+  group('should consider a package valid if it', () {
+    setUp(d.validPackage.create);
+
+    integration('looks normal', () => expectNoValidationError(utf8Readme));
+
+    integration('has a non-primary readme with invalid utf-8', () {
+      d.dir(appPath, [
+        d.file("README", "Valid utf-8"),
+        d.binaryFile("README.invalid", [192])
+      ]).create();
+      expectNoValidationError(utf8Readme);
+    });
+  });
+
+  integration('should consider a package invalid if it has a README with '
+      'invalid utf-8', () {
+    d.validPackage.create();
+
+    d.dir(appPath, [
+      d.binaryFile("README", [192])
+    ]).create();
+    expectValidationWarning(utf8Readme);
+  });
+}