Make test context more accurate

pkg/analyzer/lib/src/generated/testing/element_factory.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.testing.element_factory;
 
 import 'dart:collection';
@@ skipping 146 matching lines @@
         DartObjectImpl value =
             new DartObjectImpl(enumType, new GenericState(fieldMap));
         constantElement.evaluationResult = new EvaluationResultImpl.con1(value);
         fields.add(constantElement);
       }
     }
     //
     // Finish building the enum.
     //
     enumElement.fields = fields;
-
-
-        // Client code isn't allowed to invoke the constructor, so we do not model it.
+    // Client code isn't allowed to invoke the constructor, so we do not model it.
     return enumElement;
   }
 
   static ExportElementImpl exportFor(LibraryElement exportedLibrary,
       [List<NamespaceCombinator> combinators = NamespaceCombinator.EMPTY_ARRAY]) {
     ExportElementImpl spec = new ExportElementImpl();
     spec.exportedLibrary = exportedLibrary;
     spec.combinators = combinators;
     return spec;
   }
@@ skipping 310 matching lines @@
     variable.synthetic = true;
     PropertyAccessorElementImpl getter =
         new PropertyAccessorElementImpl.forVariable(variable);
     getter.getter = true;
     getter.synthetic = true;
     getter.variable = variable;
     getter.returnType = type;
     variable.getter = getter;
     FunctionTypeImpl getterType = new FunctionTypeImpl.con1(getter);
     getter.type = getterType;
-    if (!isFinal) {
+    if (!isConst && !isFinal) {
       PropertyAccessorElementImpl setter =
           new PropertyAccessorElementImpl.forVariable(variable);
       setter.setter = true;
       setter.static = true;
       setter.synthetic = true;
       setter.variable = variable;
       setter.parameters =
           <ParameterElement>[requiredParameter2("_$name", type)];
       setter.returnType = VoidTypeImpl.instance;
       setter.type = new FunctionTypeImpl.con1(setter);
       variable.setter = setter;
     }
     return variable;
   }
 }