Make AnalysisServer.onAnalysisComplete a Future and wait for it before refactoring.

pkg/analysis_server/test/domain_execution_test.dart

 // Copyright (c) 2014, 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 test.domain.execution;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/constants.dart';
@@ skipping 178 matching lines @@
       when(
           context.getLibrariesReferencedFromHtml(
               anyObject)).thenReturn([source6, source7]);
 
       ServerContextManager manager = new ServerContextManagerMock();
       when(manager.isInAnalysisRoot(anyString)).thenReturn(true);
 
       AnalysisServer server = new AnalysisServerMock();
       when(server.getAnalysisContexts()).thenReturn([context]);
       when(server.contextDirectoryManager).thenReturn(manager);
-      when(server.isAnalysisComplete()).thenReturn(false);
 
       StreamController controller = new StreamController.broadcast(sync: true);
       when(server.onFileAnalyzed).thenReturn(controller.stream);
 
       List<String> unsentNotifications = <String>[
           source1.fullName,
           source2.fullName,
           source3.fullName,
           source4.fullName,
           source5.fullName];
@@ skipping 61 matching lines @@
  * A [Source] that knows it's [fullName].
  */
 class TestSource implements Source {
   String fullName;
 
   TestSource(this.fullName);
 
   @override
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }