Add support for Element.docRange to the summary.

pkg/analyzer/test/src/summary/summary_test.dart

 // Copyright (c) 2015, 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 analyzer.test.src.summary.summary_test;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 223 matching lines @@
    * strings containing comments, nested comments, etc.
    */
   void checkDocumentationComment(
       UnlinkedDocumentationComment documentationComment, String text) {
     expect(documentationComment, isNotNull);
     int commentStart = text.indexOf('/*');
     expect(commentStart, isNot(-1));
     int commentEnd = text.indexOf('*/');
     expect(commentEnd, isNot(-1));
     commentEnd += 2;
-    String expectedCommentText = text.substring(commentStart, commentEnd);
+    String expectedCommentText =
+        text.substring(commentStart, commentEnd).replaceAll('\r\n', '\n');
     expect(documentationComment.text, expectedCommentText);
+    expect(documentationComment.offset, commentStart);
+    expect(documentationComment.length, commentEnd - commentStart);
   }
 
   /**
    * Verify that the given [typeRef] represents the type `dynamic`.
    */
   void checkDynamicTypeRef(UnlinkedTypeRef typeRef) {
     checkTypeRef(typeRef, null, null, null);
   }
 
   /**
@@ skipping 611 matching lines @@
 
 class D {}
 class E {}''';
     UnlinkedClass cls = serializeClassText(text);
     expect(cls.documentationComment, isNotNull);
     checkDocumentationComment(cls.documentationComment, text);
   }
 
   test_class_documented_with_with_windows_line_endings() {
     String text = '/**\r\n * Docs\r\n */\r\nclass C {}';
-    String convertedText = text.replaceAll('\r\n', '\n');
     UnlinkedClass cls = serializeClassText(text);
     expect(cls.documentationComment, isNotNull);
-    checkDocumentationComment(cls.documentationComment, convertedText);
+    checkDocumentationComment(cls.documentationComment, text);
   }
 
   test_class_interface() {
     UnlinkedClass cls = serializeClassText('''
 class C implements D {}
 class D {}
 ''');
     expect(cls.interfaces, hasLength(1));
     checkTypeRef(cls.interfaces[0], null, null, 'D');
   }
@@ skipping 1762 matching lines @@
     UnlinkedVariable variable =
         serializeVariableText('int i;', variableName: 'i');
     checkTypeRef(variable.type, 'dart:core', 'dart:core', 'int');
   }
 
   test_varible_private() {
     serializeVariableText('int _i;', variableName: '_i');
     expect(unlinkedUnits[0].publicNamespace.names, isEmpty);
   }
 }