Split resolver_test.dart into smaller files.

pkg/analyzer/test/generated/static_warning_code_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.static_warning_code_test;
 
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:unittest/unittest.dart';
 
 import '../reflective_tests.dart';
 import '../utils.dart';
-import 'resolver_test.dart';
+import 'resolver_test_case.dart';
 
 main() {
   initializeTestEnvironment();
   runReflectiveTests(StaticWarningCodeTest);
 }
 
 @reflectiveTest
 class StaticWarningCodeTest extends ResolverTestCase {
   void fail_undefinedGetter() {
     Source source = addSource(r'''
@@ skipping 3604 matching lines @@
   return false;
 }''');
     computeLibrarySourceErrors(source);
     assertErrors(source, [
       StaticWarningCode.MISSING_ENUM_CONSTANT_IN_SWITCH,
       StaticWarningCode.MISSING_ENUM_CONSTANT_IN_SWITCH
     ]);
     verify([source]);
   }
 }