Converted Observatory cpu-profile element

runtime/observatory/tests/observatory_ui/function_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/src/elements/function_ref.dart';
 import '../mocks.dart';
 
-main(){
+main() {
   FunctionRefElement.tag.ensureRegistration();
 
   final isolate = new IsolateRefMock(id: 'i-id', name: 'i-name');
   final function = new FunctionRefMock(id: 'f-id', name: 'f-name');
   test('instantiation', () {
     final e = new FunctionRefElement(isolate, function);
     expect(e, isNotNull, reason: 'element correctly created');
     expect(e.isolate, equals(isolate));
     expect(e.function, equals(function));
   });
   test('elements created after attachment', () async {
     final e = new FunctionRefElement(isolate, function);
     document.body.append(e);
     await e.onRendered.first;
     expect(e.children.length, isNonZero, reason: 'has elements');
     e.remove();
     await e.onRendered.first;
     expect(e.children.length, isZero, reason: 'is empty');
   });
 }