Break up another large file

pkg/analyzer/test/generated/hint_code_test.dart

 // Copyright (c) 2016, 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.hint_code_test;
 
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/parser.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
 import '../utils.dart';
 import 'analysis_context_factory.dart';
 import 'resolver_test_case.dart';
 
 main() {
@@ skipping 82 matching lines @@
     Source source = addSource(r'''
 m(x) {
   x?.a()?.b();
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
-  void test_canBeNullAfterNullAware_false_propertyAccess() {
+  void test_canBeNullAfterNullAware_false_null() {
     Source source = addSource(r'''
 m(x) {
-  x?.a?.b;
+  x?.a.hashCode;
+  x?.a.runtimeType;
+  x?.a.toString();
+  x?.b().hashCode;
+  x?.b().runtimeType;
+  x?.b().toString();
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
-  void test_canBeNullAfterNullAware_false_null() {
+  void test_canBeNullAfterNullAware_false_propertyAccess() {
     Source source = addSource(r'''
 m(x) {
-  x?.a.hashCode;
-  x?.a.runtimeType;
-  x?.a.toString();
-  x?.b().hashCode;
-  x?.b().runtimeType;
-  x?.b().toString();
+  x?.a?.b;
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_canBeNullAfterNullAware_methodInvocation() {
     Source source = addSource(r'''
 m(x) {
@@ skipping 3788 matching lines @@
   n() {
     var a = m(), b = m();
   }
 }''');
     computeLibrarySourceErrors(source);
     assertErrors(
         source, [HintCode.USE_OF_VOID_RESULT, HintCode.USE_OF_VOID_RESULT]);
     verify([source]);
   }
 }