abort completion request - fixes #24271

pkg/analysis_server/test/domain_completion_util.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.completion;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/domain_completion.dart';
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/index/index.dart' show Index;
 import 'package:analysis_server/src/services/index/local_memory_index.dart';
 import 'package:unittest/unittest.dart';
 
 import 'analysis_abstract.dart';
 import 'mocks.dart';
 
 class AbstractCompletionDomainTest extends AbstractAnalysisTest {
   String completionId;
   int completionOffset;
   int replacementOffset;
   int replacementLength;
   List<CompletionSuggestion> suggestions = [];
   bool suggestionsDone = false;
+  Map<String,List<CompletionSuggestion>> allSuggestions = {};
 
   String addTestFile(String content, {int offset}) {
     completionOffset = content.indexOf('^');
     if (offset != null) {
       expect(completionOffset, -1, reason: 'cannot supply offset and ^');
       completionOffset = offset;
       return super.addTestFile(content);
     }
     expect(completionOffset, isNot(equals(-1)), reason: 'missing ^');
     int nextOffset = content.indexOf('^', completionOffset + 1);
@@ skipping 65 matching lines @@
       String id = params.id;
       assertValidId(id);
       if (id == completionId) {
         expect(suggestionsDone, isFalse);
         replacementOffset = params.replacementOffset;
         replacementLength = params.replacementLength;
         suggestionsDone = params.isLast;
         expect(suggestionsDone, isNotNull);
         suggestions = params.results;
       }
+      allSuggestions[id] = params.results;
     } else if (notification.event == SERVER_ERROR) {
       fail('server error: ${notification.toJson()}');
     }
   }
 
   @override
   void setUp() {
     super.setUp();
     createProject();
     handler = new CompletionDomainHandler(server);
   }
 }