Integration test search.getTypeHierarchy and make some minor fixes.

pkg/analysis_server/test/integration/integration_test_methods.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.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
 // "pkg/analysis_server/spec/generate_files".
 
 /**
  * Convenience methods for running integration tests
@@ skipping 575 matching lines @@
    *
    *   The file containing the declaration or reference to the type for which a
    *   hierarchy is being requested.
    *
    * offset ( int )
    *
    *   The offset of the name of the type within the file.
    *
    * Returns
    *
-   * hierarchyItems ( List<TypeHierarchyItem> )
+   * hierarchyItems ( optional List<TypeHierarchyItem> )
    *
    *   A list of the types in the requested hierarchy. The first element of the
    *   list is the item representing the type for which the hierarchy was
    *   requested. The index of other elements of the list is unspecified, but
    *   correspond to the integers used to reference supertype and subtype items
    *   within the items.
+   *
+   *   This field will be absent if the code at the given file and offset does
+   *   not represent a type, or if the file has not been sufficiently analyzed
+   *   to allow a type hierarchy to be produced.
    */
   Future sendSearchGetTypeHierarchy(String file, int offset, {bool checkTypes: true}) {
     Map<String, dynamic> params = {};
     params["file"] = file;
     params["offset"] = offset;
     if (checkTypes) {
       expect(params, isSearchGetTypeHierarchyParams);
     }
     return server.send("search.getTypeHierarchy", params)
         .then((result) {
@@ skipping 341 matching lines @@
     }
     return server.send("debug.setSubscriptions", params)
         .then((result) {
       if (checkTypes) {
         expect(result, isDebugSetSubscriptionsResult);
       }
       return result;
     });
   }
 }