Converted Observatory refs elements

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

+// 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/models.dart' as M;
+import 'package:observatory/src/elements/field_ref.dart';
+import 'package:observatory/src/elements/instance_ref.dart';
+import '../mocks.dart';
+
+main() {
+  FieldRefElement.tag.ensureRegistration();
+
+  final iTag = InstanceRefElement.tag.name;
+
+  const isolate = const IsolateRefMock();
+  const field = const FieldRefMock();
+  const declaredType = const InstanceMock(kind: M.InstanceKind.type,
+                                          name: 'CustomObject');
+  const field_non_dynamic = const FieldRefMock(declaredType: declaredType);
+  final repository = new InstanceRepositoryMock();
+  test('instantiation', () {
+    final e = new FieldRefElement(isolate, field, repository);
+    expect(e, isNotNull, reason: 'element correctly created');
+    expect(e.isolate, equals(isolate));
+    expect(e.field, equals(field));
+  });
+  group('elements', () {
+    test('created after attachment (dynamic)', () async {
+      final e = new FieldRefElement(isolate, field, repository);
+      document.body.append(e);
+      await e.onRendered.first;
+      expect(e.children.length, isNonZero, reason: 'has elements');
+      expect(e.querySelectorAll(iTag).length, isZero);
+      e.remove();
+      await e.onRendered.first;
+      expect(e.children.length, isZero, reason: 'is empty');
+    });
+    test('created after attachment (non dynamic)', () async {
+      final e = new FieldRefElement(isolate, field_non_dynamic, repository);
+      document.body.append(e);
+      await e.onRendered.first;
+      expect(e.children.length, isNonZero, reason: 'has elements');
+      expect(e.querySelectorAll(iTag).length, equals(1));
+      e.remove();
+      await e.onRendered.first;
+      expect(e.children.length, isZero, reason: 'is empty');
+    });
+  });
+}