Prepare for chaining resynthesizers from AC to SDK AC.

pkg/analyzer/test/src/summary/resynthesize_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.serialization.elements_test;
 
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/element_handle.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart' show Namespace;
@@ skipping 59 matching lines @@
         '(public namespace)');
     compareNamespaces(resynthesized.exportNamespace, original.exportNamespace,
         '(export namespace)');
     if (original.entryPoint == null) {
       expect(resynthesized.entryPoint, isNull);
     } else {
       expect(resynthesized.entryPoint, isNotNull);
       compareFunctionElements(
           resynthesized.entryPoint, original.entryPoint, '(entry point)');
     }
-    compareExecutableElements(
-        resynthesized.loadLibraryFunction as ExecutableElementImpl,
-        original.loadLibraryFunction as ExecutableElementImpl,
-        '(loadLibraryFunction)');
+    // The libraries `dart:core` and `dart:async` cannot create their
+    // `loadLibrary` functions until after both are created.
+    if (original.name != 'dart.core' && original.name != 'dart.async') {
+      compareExecutableElements(
+          resynthesized.loadLibraryFunction as ExecutableElementImpl,
+          original.loadLibraryFunction as ExecutableElementImpl,
+          '(loadLibraryFunction)');
+    }
     // TODO(paulberry): test metadata.
   }
 
   void compareClassElements(
       ClassElementImpl resynthesized, ClassElementImpl original, String desc) {
     compareElements(resynthesized, original, desc);
     expect(resynthesized.fields.length, original.fields.length,
         reason: '$desc fields.length');
     for (int i = 0; i < resynthesized.fields.length; i++) {
       String name = original.fields[i].name;
@@ skipping 1485 matching lines @@
   test_variable_setterInPart_getterInPart() {
     addNamedSource('/a.dart', 'part of my.lib; void set x(int _) {}');
     addNamedSource('/b.dart', 'part of my.lib; int get x => 42;');
     checkLibrary('library my.lib; part "a.dart"; part "b.dart";');
   }
 
   test_variables() {
     checkLibrary('int i; int j;');
   }
 }