Deprecate ToSourceVisitor

pkg/analyzer/test/src/dart/ast/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.src.dart.ast.utilities_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
@@ skipping 10 matching lines @@
 
 import '../../../generated/parser_test.dart' show ParserTestCase;
 import '../../../generated/test_support.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(ConstantEvaluatorTest);
     defineReflectiveTests(NodeLocatorTest);
     defineReflectiveTests(NodeLocator2Test);
     defineReflectiveTests(ResolutionCopierTest);
+    // ignore: deprecated_member_use
     defineReflectiveTests(ToSourceVisitorTest);
     defineReflectiveTests(ToSourceVisitor2Test);
   });
 }
 
 @reflectiveTest
 class ConstantEvaluatorTest extends ParserTestCase {
   void fail_constructor() {
     Object value = _getConstantValue("?");
     expect(value, null);
@@ skipping 3296 matching lines @@
    * Assert that a `ToSourceVisitor2` will produce the [expectedSource] when
    * visiting the given [node].
    */
   void _assertSource(String expectedSource, AstNode node) {
     StringBuffer buffer = new StringBuffer();
     node.accept(new ToSourceVisitor2(buffer));
     expect(buffer.toString(), expectedSource);
   }
 }
 
+@deprecated
 @reflectiveTest
 class ToSourceVisitorTest extends EngineTestCase {
   void test_visitAdjacentStrings() {
     _assertSource(
         "'a' 'b'",
         AstFactory.adjacentStrings(
             [AstFactory.string2("a"), AstFactory.string2("b")]));
   }
 
   void test_visitAnnotation_constant() {
@@ skipping 2214 matching lines @@
   /**
    * Assert that a `ToSourceVisitor` will produce the [expectedSource] when
    * visiting the given [node].
    */
   void _assertSource(String expectedSource, AstNode node) {
     PrintStringWriter writer = new PrintStringWriter();
     node.accept(new ToSourceVisitor(writer));
     expect(writer.toString(), expectedSource);
   }
 }