Fix node replacer to handle comments on variable declaration lists (issue 25818)

pkg/analyzer/test/generated/utilities_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 analyzer.test.generated.utilities_test;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 3733 matching lines @@
     _assertReplace(
         node, new Getter_NodeReplacerTest_test_variableDeclaration());
     _assertReplace(
         node, new Getter_NodeReplacerTest_test_variableDeclaration_2());
     _testAnnotatedNode(node);
   }
 
   void test_variableDeclarationList() {
     VariableDeclarationList node = AstFactory.variableDeclarationList(
         null, AstFactory.typeName4("T"), [AstFactory.variableDeclaration("a")]);
+    node.documentationComment =
+        Comment.createEndOfLineComment(EMPTY_TOKEN_LIST);
+    node.metadata.add(AstFactory.annotation(AstFactory.identifier3("a")));
     _assertReplace(
         node, new Getter_NodeReplacerTest_test_variableDeclarationList());
     _assertReplace(
         node, new ListGetter_NodeReplacerTest_test_variableDeclarationList(0));
+    _testAnnotatedNode(node);
   }
 
   void test_variableDeclarationStatement() {
     VariableDeclarationStatement node = AstFactory.variableDeclarationStatement(
         null, AstFactory.typeName4("T"), [AstFactory.variableDeclaration("a")]);
     _assertReplace(
         node, new Getter_NodeReplacerTest_test_variableDeclarationStatement());
   }
 
   void test_whileStatement() {
@@ skipping 563 matching lines @@
   }
 
   void test_get_added() {
     TokenMap tokenMap = new TokenMap();
     Token key = TokenFactory.tokenFromType(TokenType.AT);
     Token value = TokenFactory.tokenFromType(TokenType.AT);
     tokenMap.put(key, value);
     expect(tokenMap.get(key), same(value));
   }
 }