Add self-reference sources into INCLUDED_PARTS.

pkg/analyzer/test/generated/compile_time_error_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 engine.compile_time_error_code_test;
 
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/parser.dart' show ParserErrorCode;
 import 'package:analyzer/src/generated/source_io.dart';
@@ skipping 4687 matching lines @@
   void test_partOfNonPart() {
     Source source = addSource(r'''
 library l1;
 part 'l2.dart';''');
     addNamedSource("/l2.dart", "library l2;");
     computeLibrarySourceErrors(source);
     assertErrors(source, [CompileTimeErrorCode.PART_OF_NON_PART]);
     verify([source]);
   }
 
+  void test_partOfNonPart_self() {
+    Source source = addSource(r'''
+library lib;
+part 'test.dart';''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [CompileTimeErrorCode.PART_OF_NON_PART]);
+    verify([source]);
+  }
+
   void test_prefix_conditionalPropertyAccess_call() {
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     options.enableNullAwareOperators = true;
     resetWithOptions(options);
     addNamedSource('/lib.dart', '''
 library lib;
 g() {}
 ''');
     Source source = addSource('''
 import 'lib.dart' as p;
@@ skipping 1328 matching lines @@
         source, [CompileTimeErrorCode.WRONG_NUMBER_OF_PARAMETERS_FOR_OPERATOR]);
     verify([source]);
     reset();
   }
 
   void _check_wrongNumberOfParametersForOperator1(String name) {
     _check_wrongNumberOfParametersForOperator(name, "");
     _check_wrongNumberOfParametersForOperator(name, "a, b");
   }
 }