add test for LibraryIdentifier within a subfolder

test/transformer_test.dart

 // Copyright (c) 2015, 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 initialize.transformer_test;
 
 import 'common.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:dart_style/dart_style.dart';
 import 'package:initialize/transformer.dart';
 import 'package:unittest/compact_vm_config.dart';
@@ skipping 226 matching lines @@
 
   testPhases('imports from exported libraries', phases, {
     'a|web/index.dart': '''
         library web_foo;
 
         export 'foo.dart';
         ''',
     'a|web/foo.dart': '''
         library foo;
 
-        import 'bar.dart';
+        import 'foo/bar.dart';
         ''',
-    'a|web/bar.dart': '''
+    'a|web/foo/bar.dart': '''
         @constInit
         library bar;
 
         import 'package:test_initializers/common.dart';
 
         @constInit
         bar() {};
 
         @constInit
         class Bar {}
         ''',
     // Mock out the Initialize package plus some initializers.
     'initialize|lib/initialize.dart': mockInitialize,
     'test_initializers|lib/common.dart': commonInitializers,
   }, {
     'a|web/index.initialize.dart': formatter.format('''
         import 'package:initialize/src/static_loader.dart';
         import 'package:initialize/initialize.dart';
         import 'index.dart' as i0;
-        import 'bar.dart' as i1;
+        import 'foo/bar.dart' as i1;
         import 'package:test_initializers/common.dart' as i2;
 
         main() {
           initializers.addAll([
-            new InitEntry(i2.constInit, const LibraryIdentifier(#bar, null, 'bar.dart')),
+            new InitEntry(i2.constInit, const LibraryIdentifier(#bar, null, 'foo/bar.dart')),
             new InitEntry(i2.constInit, i1.bar),
             new InitEntry(i2.constInit, i1.Bar),
           ]);
 
           i0.main();
         }
         ''')
   }, []);
 }
 
@@ skipping 51 matching lines @@
           initializers.addAll([
             new InitEntry(i2.initMethod, i1.foo),
             new InitEntry(i2.initMethod, i0.index),
           ]);
 
           i0.main();
         }
         ''')
   }, []);
 }