Change when enum constant elements are created to fix bug in re-creating ASTs from existing element…

pkg/analyzer/test/generated/declaration_resolver_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 engine.declaration_resolver_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
@@ skipping 240 matching lines @@
   }
 }
 
 @reflectiveTest
 class DeclarationResolverTest extends ResolverTestCase {
   @override
   void setUp() {
     super.setUp();
   }
 
+  void test_enumConstant_partiallyResolved() {
+    String code = r'''
+enum Fruit {apple, pear}
+''';
+    Source source = addNamedSource('/test.dart', code);
+    LibrarySpecificUnit target = new LibrarySpecificUnit(source, source);
+    analysisContext.computeResult(source, LIBRARY_ELEMENT1);
+    CompilationUnit unit =
+        analysisContext.computeResult(target, RESOLVED_UNIT1);
+    CompilationUnit unit2 = _cloneResolveUnit(unit);
+  }
+
   void test_functionDeclaration_getter() {
     String code = r'''
 int get zzz => 42;
 ''';
     CompilationUnit unit = resolveSource(code);
     PropertyAccessorElement getterElement =
         _findSimpleIdentifier(unit, code, 'zzz =>').staticElement;
     expect(getterElement.isGetter, isTrue);
     // re-resolve
     CompilationUnit unit2 = _cloneResolveUnit(unit);
@@ skipping 253 matching lines @@
     expect(element.type.toString(), "<T>(T, T) → T");
     expect(t.element, same(tElement));
 
     // re-resolve
     CompilationUnit unit2 = _cloneResolveUnit(unit);
     node = _findSimpleIdentifier(unit2, code, 'max').parent;
     t = node.typeParameters.typeParameters[0];
     expect(t.element, same(tElement));
   }
 }