Fix for issue 20930

pkg/analyzer/test/generated/static_warning_code_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 engine.static_warning_code_test;
 
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/parser.dart' show ParserErrorCode;
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 3290 matching lines @@
   }
 
   void test_typeTestNonType() {
     Source source = addSource(r'''
 var A = 0;
 f(var p) {
   if (p is A) {
   }
 }''');
     resolve(source);
-    assertErrors(source, [StaticWarningCode.TYPE_TEST_NON_TYPE]);
+    assertErrors(source, [StaticWarningCode.TYPE_TEST_WITH_NON_TYPE]);
     verify([source]);
   }
 
+  void test_typeTestWithUndefinedName() {
+    Source source = addSource(r'''
+f(var p) {
+  if (p is A) {
+  }
+}''');
+    resolve(source);
+    assertErrors(source, [StaticWarningCode.TYPE_TEST_WITH_UNDEFINED_NAME]);
+    verify([source]);
+  }
+
   void test_undefinedClass_instanceCreation() {
     Source source = addSource("f() { new C(); }");
     resolve(source);
     assertErrors(source, [StaticWarningCode.UNDEFINED_CLASS]);
   }
 
   void test_undefinedClass_variableDeclaration() {
     Source source = addSource("f() { C c; }");
     resolve(source);
     assertErrors(source, [StaticWarningCode.UNDEFINED_CLASS]);
@@ skipping 191 matching lines @@
 
   void test_voidReturnForGetter() {
     Source source = addSource(r'''
 class S {
   void get value {}
 }''');
     resolve(source);
     assertErrors(source, [StaticWarningCode.VOID_RETURN_FOR_GETTER]);
   }
 }