Converted general-error tag

runtime/observatory/tests/observatory_ui/general_error/element_test.dart

Index: runtime/observatory/tests/observatory_ui/general_error/element_test.dart
diff --git a/runtime/observatory/tests/observatory_ui/general_error/element_test.dart b/runtime/observatory/tests/observatory_ui/general_error/element_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..31a90314dda0265cdf439cf013fd827f7e590fa0
--- /dev/null
+++ b/runtime/observatory/tests/observatory_ui/general_error/element_test.dart
@@ -0,0 +1,61 @@
+// Copyright (c) 2016, 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:html';
+import 'package:unittest/unittest.dart';
+import 'package:observatory/mocks.dart';
+import 'package:observatory/src/elements/general_error.dart';
+import 'package:observatory/src/elements/nav/notify.dart';
+
+main() {
+  GeneralErrorElement.tag.ensureRegistration();
+
+  final nTag = NavNotifyElement.tag.name;
+  final notifications = new NotificationRepositoryMock();
+  final String message = 'content-of-the-message';
+
+  group('instantiation', () {
+    test('default', () {
+      final GeneralErrorElement e = new GeneralErrorElement(notifications);
+      expect(e, isNotNull, reason: 'element correctly created');
+      expect(e.message, isNotNull, reason: 'message should not be null');
+      expect(e.message, equals(''), reason: 'message should be empty');
+    });
+    test('message', () {
+      final GeneralErrorElement e = new GeneralErrorElement(notifications,
+          message: message);
+      expect(e, isNotNull, reason: 'element correctly created');
+      expect(e.message, isNotNull, reason: 'message should not be null');
+      expect(e.message, equals(message), reason: 'message should be the same');
+    });
+  });
+  group('elements', () {
+    test('created after attachment', () async {
+      final GeneralErrorElement e = new GeneralErrorElement(notifications);
+      document.body.append(e);
+      await e.onRendered.first;
+      expect(e.children.length, isNonZero, reason: 'has elements');
+      expect(e.querySelectorAll(nTag).length, equals(1));
+      e.remove();
+      await e.onRendered.first;
+      expect(e.children.length, isZero, reason: 'is empty');
+    });
+    test('react to message change', () async {
+      final GeneralErrorElement e = new GeneralErrorElement(notifications);
+      document.body.append(e);
+      await e.onRendered.first;
+      expect(e.innerHtml.contains(message), isFalse,
+          reason: 'should not contain');
+      e.message = message;
+      await e.onRendered.first;
+      expect(e.innerHtml.contains(message), isTrue,
+          reason: 'should contain');
+      e.message = '';
+      await e.onRendered.first;
+      expect(e.innerHtml.contains(message), isFalse,
+          reason: 'should not contain');
+      e.remove();
+      await e.onRendered.first;
+    });
+  });
+}