Create LibraryElement with SDK context for SDK sources.

pkg/analyzer/test/src/task/dart_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 test.src.task.dart_test;
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show AnalysisOptionsImpl, CacheState;
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/resolver.dart';
+import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/task/dart.dart';
 import 'package:analyzer/task/dart.dart';
 import 'package:analyzer/task/general.dart';
 import 'package:analyzer/task/model.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../generated/test_support.dart';
 import '../../reflective_tests.dart';
 import '../context/abstract_context.dart';
@@ skipping 367 matching lines @@
       expect(combinator.offset, 33);
       expect(combinator.end, 42);
       expect(combinator.shownNames, ['A', 'B']);
     }
     {
       HideElementCombinator combinator = combinators[1];
       expect(combinator.hiddenNames, ['C', 'D']);
     }
   }
 
+  test_perform_dartCoreContext() {
+    List<Source> sources = newSources({'/libA.dart': ''});
+    Source source = sources[0];
+    // perform task
+    _computeResult(source, LIBRARY_ELEMENT2);
+    expect(task, new isInstanceOf<BuildDirectiveElementsTask>());
+    // prepare outputs
+    LibraryElement libraryElement = outputs[LIBRARY_ELEMENT2];
+    // verify that dart:core has SDK context
+    {
+      LibraryElement coreLibrary = libraryElement.importedLibraries[0];
+      DartSdk dartSdk = context.sourceFactory.dartSdk;
+      expect(coreLibrary.context, same(dartSdk.context));
+    }
+  }
+
   test_perform_error_exportOfNonLibrary() {
     List<Source> sources = newSources({
       '/libA.dart': '''
 library libA;
 export 'part.dart';
 ''',
       '/part.dart': '''
 part of notLib;
 '''
     });
@@ skipping 2301 matching lines @@
   /**
    * Fill [errorListener] with [result] errors in the current [task].
    */
   void _fillErrorListener(ResultDescriptor<List<AnalysisError>> result) {
     List<AnalysisError> errors = task.outputs[result];
     expect(errors, isNotNull, reason: result.name);
     errorListener = new GatheringErrorListener();
     errorListener.addAll(errors);
   }
 }