Fix for NPE in the server.

pkg/analysis_server/test/computer/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 test.computer.element;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_testing/abstract_context.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart' as engine;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart' as engine;
 import 'package:unittest/unittest.dart';
 
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(ElementTest);
   runReflectiveTests(ElementKindTest);
 }
 
 
 class ElementKindTest {
-  void test_toString() {
-    expect(ElementKind.CLASS.toString(), 'ElementKind.CLASS');
-    expect(ElementKind.COMPILATION_UNIT.toString(),
-        'ElementKind.COMPILATION_UNIT');
+  void test_fromEngine() {
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.CLASS),
+        ElementKind.CLASS);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.COMPILATION_UNIT),
+        ElementKind.COMPILATION_UNIT);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.CONSTRUCTOR),
+        ElementKind.CONSTRUCTOR);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.FIELD),
+        ElementKind.FIELD);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.FUNCTION),
+        ElementKind.FUNCTION);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.FUNCTION_TYPE_ALIAS),
+        ElementKind.FUNCTION_TYPE_ALIAS);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.GETTER),
+        ElementKind.GETTER);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.LIBRARY),
+        ElementKind.LIBRARY);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.LOCAL_VARIABLE),
+        ElementKind.LOCAL_VARIABLE);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.METHOD),
+        ElementKind.METHOD);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.PARAMETER),
+        ElementKind.PARAMETER);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.SETTER),
+        ElementKind.SETTER);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.TOP_LEVEL_VARIABLE),
+        ElementKind.TOP_LEVEL_VARIABLE);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.TYPE_PARAMETER),
+        ElementKind.TYPE_PARAMETER);
+    expect(
+        new ElementKind.fromEngine(engine.ElementKind.ANGULAR_COMPONENT),
+        ElementKind.UNKNOWN);
   }
 
   void test_string_constructor() {
     expect(new ElementKind(ElementKind.CLASS.name), ElementKind.CLASS);
     expect(
         new ElementKind(ElementKind.CLASS_TYPE_ALIAS.name),
         ElementKind.CLASS_TYPE_ALIAS);
     expect(
         new ElementKind(ElementKind.COMPILATION_UNIT.name),
         ElementKind.COMPILATION_UNIT);
@@ skipping 28 matching lines @@
         ElementKind.UNIT_TEST_TEST);
     expect(
         new ElementKind(ElementKind.UNIT_TEST_GROUP.name),
         ElementKind.UNIT_TEST_GROUP);
     expect(new ElementKind(ElementKind.UNKNOWN.name), ElementKind.UNKNOWN);
     expect(() {
       new ElementKind('no-such-kind');
     }, throws);
   }
 
-  void test_fromEngine() {
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.CLASS),
-        ElementKind.CLASS);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.COMPILATION_UNIT),
-        ElementKind.COMPILATION_UNIT);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.CONSTRUCTOR),
-        ElementKind.CONSTRUCTOR);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.FIELD),
-        ElementKind.FIELD);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.FUNCTION),
-        ElementKind.FUNCTION);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.FUNCTION_TYPE_ALIAS),
-        ElementKind.FUNCTION_TYPE_ALIAS);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.GETTER),
-        ElementKind.GETTER);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.LIBRARY),
-        ElementKind.LIBRARY);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.LOCAL_VARIABLE),
-        ElementKind.LOCAL_VARIABLE);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.METHOD),
-        ElementKind.METHOD);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.PARAMETER),
-        ElementKind.PARAMETER);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.SETTER),
-        ElementKind.SETTER);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.TOP_LEVEL_VARIABLE),
-        ElementKind.TOP_LEVEL_VARIABLE);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.TYPE_PARAMETER),
-        ElementKind.TYPE_PARAMETER);
-    expect(
-        new ElementKind.fromEngine(engine.ElementKind.ANGULAR_COMPONENT),
-        ElementKind.UNKNOWN);
+  void test_toString() {
+    expect(ElementKind.CLASS.toString(), 'ElementKind.CLASS');
+    expect(ElementKind.COMPILATION_UNIT.toString(),
+        'ElementKind.COMPILATION_UNIT');
   }
 }
 
 
 @ReflectiveTestCase()
 class ElementTest extends AbstractContextTest {
   engine.Element findElementInUnit(CompilationUnit unit, String name,
       [engine.ElementKind kind]) {
     return findChildElement(unit.element, name, kind);
   }
@@ skipping 113 matching lines @@
       expect(location.file, '/test.dart');
       expect(location.offset, 32);
       expect(location.length, 'myGetter'.length);
       expect(location.startLine, 2);
       expect(location.startColumn, 23);
     }
     expect(element.parameters, '(int a, {String b})');
     expect(element.returnType, 'List<String>');
     expect(element.flags, Element.FLAG_STATIC);
   }
+
+  void test_fromElement_dynamic() {
+    var engineElement = engine.DynamicElementImpl.instance;
+    // create notification Element
+    Element element = new Element.fromEngine(engineElement);
+    expect(element.kind, ElementKind.UNKNOWN);
+    expect(element.name, 'dynamic');
+    expect(element.location, isNull);
+    expect(element.parameters, isNull);
+    expect(element.returnType, isNull);
+    expect(element.flags, 0);
+  }
 }