Remove the final error being generated in a scope

pkg/analyzer/test/src/dart/element/element_test.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.
 
 library analyzer.test.src.dart.element.element_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
@@ skipping 4058 matching lines @@
       expect(m2Node, isNotNull);
       expect(m2Node.name.name, "m2");
       expect(m2Node.element, same(m2Element));
     }
   }
 }
 
 @reflectiveTest
 class MultiplyDefinedElementImplTest extends EngineTestCase {
   void test_fromElements_conflicting() {
-    Element firstElement = ElementFactory.localVariableElement2("xx");
-    Element secondElement = ElementFactory.localVariableElement2("yy");
+    TopLevelVariableElement firstElement =
+        ElementFactory.topLevelVariableElement2('xx');
+    TopLevelVariableElement secondElement =
+        ElementFactory.topLevelVariableElement2('yy');
+    _addToLibrary([firstElement, secondElement]);
     Element result = MultiplyDefinedElementImpl.fromElements(
         null, firstElement, secondElement);
     EngineTestCase.assertInstanceOf(
         (obj) => obj is MultiplyDefinedElement, MultiplyDefinedElement, result);
     List<Element> elements =
         (result as MultiplyDefinedElement).conflictingElements;
     expect(elements, hasLength(2));
     for (int i = 0; i < elements.length; i++) {
-      EngineTestCase.assertInstanceOf((obj) => obj is LocalVariableElement,
-          LocalVariableElement, elements[i]);
+      EngineTestCase.assertInstanceOf((obj) => obj is TopLevelVariableElement,
+          TopLevelVariableElement, elements[i]);
     }
   }
 
   void test_fromElements_multiple() {
-    Element firstElement = ElementFactory.localVariableElement2("xx");
-    Element secondElement = ElementFactory.localVariableElement2("yy");
-    Element thirdElement = ElementFactory.localVariableElement2("zz");
+    TopLevelVariableElement firstElement =
+        ElementFactory.topLevelVariableElement2('xx');
+    TopLevelVariableElement secondElement =
+        ElementFactory.topLevelVariableElement2('yy');
+    TopLevelVariableElement thirdElement =
+        ElementFactory.topLevelVariableElement2('zz');
+    _addToLibrary([firstElement, secondElement, thirdElement]);
     Element result = MultiplyDefinedElementImpl.fromElements(
         null,
         MultiplyDefinedElementImpl.fromElements(
             null, firstElement, secondElement),
         thirdElement);
     EngineTestCase.assertInstanceOf(
         (obj) => obj is MultiplyDefinedElement, MultiplyDefinedElement, result);
     List<Element> elements =
         (result as MultiplyDefinedElement).conflictingElements;
     expect(elements, hasLength(3));
     for (int i = 0; i < elements.length; i++) {
-      EngineTestCase.assertInstanceOf((obj) => obj is LocalVariableElement,
-          LocalVariableElement, elements[i]);
+      EngineTestCase.assertInstanceOf((obj) => obj is TopLevelVariableElement,
+          TopLevelVariableElement, elements[i]);
     }
   }
 
   void test_fromElements_nonConflicting() {
-    Element element = ElementFactory.localVariableElement2("xx");
+    TopLevelVariableElement element =
+        ElementFactory.topLevelVariableElement2('xx');
+    _addToLibrary([element]);
     expect(MultiplyDefinedElementImpl.fromElements(null, element, element),
         same(element));
   }
+
+  void _addToLibrary(List<TopLevelVariableElement> variables) {
+    CompilationUnitElementImpl compilationUnit =
+        ElementFactory.compilationUnit('lib.dart');
+    LibraryElementImpl library = ElementFactory.library(null, 'lib');
+    library.definingCompilationUnit = compilationUnit;
+    compilationUnit.topLevelVariables = variables;
+  }
 }
 
 @reflectiveTest
 class ParameterElementImplTest extends EngineTestCase {
   void test_computeNode_DefaultFormalParameter() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
     Source source = contextHelper.addSource(
         "/test.dart",
         r'''
@@ skipping 358 matching lines @@
 }
 
 class _FunctionTypeImplTest_isSubtypeOf_baseCase_classFunction
     extends InterfaceTypeImpl {
   _FunctionTypeImplTest_isSubtypeOf_baseCase_classFunction(ClassElement arg0)
       : super(arg0);
 
   @override
   bool get isDartCoreFunction => true;
 }