filter imported element suggestions to reduce number of results sent to client

pkg/analysis_server/test/services/completion/imported_computer_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.services.completion.toplevel;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/completion_manager.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_cache.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
@@ skipping 36 matching lines @@
     /*
      * Simulate a source change to flush the cached compilation unit
      */
     ChangeSet changes = new ChangeSet();
     changes.addedSource(testSource);
     context.applyChanges(changes);
     /*
      * Calculate a new completion at the same location
      */
     setUpComputer();
+    int replacementOffset = request.replacementOffset;
+    int replacementLength = request.replacementLength;
     request = new DartCompletionRequest(
         context,
         searchEngine,
         testSource,
         completionOffset,
         cache,
         new CompletionPerformance());
+    request.replacementOffset = replacementOffset;
+    request.replacementLength = replacementLength;
     expect(computeFast(), isTrue);
     expect(request.unit.element, isNull);
     List<CompletionSuggestion> newSuggestions = request.suggestions;
     if (newSuggestions.length == oldSuggestions.length) {
       if (!oldSuggestions.any(
           (CompletionSuggestion s) => !newSuggestions.contains(s))) {
         return;
       }
     }
     StringBuffer sb = new StringBuffer(
@@ skipping 107 matching lines @@
     (computer as ImportedComputer).shouldWaitForLowPrioritySuggestions = false;
     computeFast();
     return computeFull((bool result) {
       assertSuggestImportedClass('C');
       // Assert computer does not wait for or include low priority results
       // from non-imported libraries unless instructed to do so.
       assertNotSuggested('H');
     });
   }
 }