Test for Issue 16407

tests/compiler/dart2js_extra/16407_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.
 
-// Successful test: output div contains "future!".
+import "package:expect/expect.dart";
 
-import 'dart:async';
+// Regression test for Issue 16407.
 
-const greeting = "Hello, cool people doing nice things!";
+void main() {
+  foo(null, true);
+  foo('x', false);
+}
 
-// Prints a greeting.
-void main() {
-  print(greeting);
-
-  new Future(() => print("future!"));
-}
+var foo = (x, result) {
+  Expect.equals(result, x is Null, '$x is Null');
+};