Set 'enclosingElement' for FunctionElementImpl_forLUB.

pkg/analyzer/test/src/summary/resynthesize_common.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/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 9591 matching lines @@
     // This test should verify that we correctly record inferred types,
     // when the type is defined in a part of an SDK library. So, test that
     // the type is actually in a part.
     Element streamElement = p.type.element;
     if (streamElement is ClassElement) {
       expect(streamElement.source, isNot(streamElement.library.source));
     }
   }
 
   void test_inferredType_usesSyntheticFunctionType_functionTypedParam() {
+    // AnalysisContext does not set the enclosing element for the synthetic
+    // FunctionElement created for the [f, g] type argument.
+    shouldCompareLibraryElements = false;
     var library = checkLibrary('''
 int f(int x(String y)) => null;
 String g(int x(String y)) => null;
 var v = [f, g];
 ''');
     if (isStrongMode) {
       checkElementText(
           library,
           r'''
 List<((String) → int) → Object> v;
@@ skipping 5666 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }