Roll Observatory packages and add a roll script

packages/csslib/test/selector_test.dart

Index: packages/csslib/test/selector_test.dart
diff --git a/packages/csslib/test/selector_test.dart b/packages/csslib/test/selector_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..aefab164d0ed0f356aeddaaf5e3ca7e7f2e15dfa
--- /dev/null
+++ b/packages/csslib/test/selector_test.dart
@@ -0,0 +1,68 @@
+// Copyright (c) 2012, 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 selector_test;
+
+import 'package:csslib/parser.dart';
+import 'package:test/test.dart';
+
+import 'testing.dart';
+
+void testSelectorSuccesses() {
+  var errors = [];
+  var selectorAst = selector('#div .foo', errors: errors);
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('#div .foo', compactOuptut(selectorAst));
+
+  // Valid selectors for class names.
+  selectorAst = selector('.foo', errors: errors..clear());
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('.foo', compactOuptut(selectorAst));
+
+  selectorAst = selector('.foobar .xyzzy', errors: errors..clear());
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('.foobar .xyzzy', compactOuptut(selectorAst));
+
+  selectorAst = selector('.foobar .a-story .xyzzy', errors: errors..clear());
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('.foobar .a-story .xyzzy', compactOuptut(selectorAst));
+
+  selectorAst =
+      selector('.foobar .xyzzy .a-story .b-story', errors: errors..clear());
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('.foobar .xyzzy .a-story .b-story', compactOuptut(selectorAst));
+
+  // Valid selectors for element IDs.
+  selectorAst = selector('#id1', errors: errors..clear());
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('#id1', compactOuptut(selectorAst));
+
+  selectorAst = selector('#id-number-3', errors: errors..clear());
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('#id-number-3', compactOuptut(selectorAst));
+
+  selectorAst = selector('#_privateId', errors: errors..clear());
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect('#_privateId', compactOuptut(selectorAst));
+}
+
+// TODO(terry): Move this failure case to a failure_test.dart when the analyzer
+//              and validator exit then they'll be a bunch more checks.
+void testSelectorFailures() {
+  var errors = [];
+
+  // Test for invalid class name (can't start with number).
+  selector('.foobar .1a-story .xyzzy', errors: errors);
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(),
+      'error on line 1, column 9: name must start with a alpha character, but '
+      'found a number\n'
+      '.foobar .1a-story .xyzzy\n'
+      '        ^^');
+}
+
+main() {
+  test('Valid Selectors', testSelectorSuccesses);
+  test('Invalid Selectors', testSelectorFailures);
+}