exclude private declarations in imported classes

pkg/analysis_services/test/completion/top_level_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_services/completion/completion_suggestion.dart';
 import 'package:analysis_services/src/completion/top_level_computer.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart';
 
 import 'completion_test_util.dart';
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(TopLevelComputerTest);
 }
 
 @ReflectiveTestCase()
 class TopLevelComputerTest extends AbstractCompletionTest {
 
   void addTestUnit(String content) {
     super.addTestUnit(content);
     computer = new TopLevelComputer(searchEngine, testUnit);
   }
 
   test_class_1() {
-    addUnit('/testA.dart', 'var T1; class A {bool x;}');
+    addUnit('/testA.dart', 'var T1; class A {bool x;} var _T2; class _D { }');
     addUnit('/testB.dart', 'class B {bool y;}');
-    addTestUnit('import "/testA.dart"; class C {bool v;^}');
+    addTestUnit('import "/testA.dart"; class C {bool v;^} class _E { }');
     return compute().then((_) {
       assertHasResult(CompletionSuggestionKind.CLASS, 'A');
-      assertHasResult(CompletionSuggestionKind.CLASS, 'B', CompletionRelevance.LOW);
+      assertHasResult(
+          CompletionSuggestionKind.CLASS,
+          'B',
+          CompletionRelevance.LOW);
       assertHasResult(CompletionSuggestionKind.CLASS, 'C');
+      assertNoResult('_D');
+      assertHasResult(CompletionSuggestionKind.CLASS, '_E');
       assertHasResult(CompletionSuggestionKind.CLASS, 'Object');
       assertHasResult(CompletionSuggestionKind.TOP_LEVEL_VARIABLE, 'T1');
+      assertNoResult('_T2');
       assertNoResult('x');
       assertNoResult('y');
       assertNoResult('v');
     });
   }
-}
+}