Add test that uses function.apply and mirrors in the same file.

tests/lib/mirrors/function_apply_mirrors_test.dart

Index: tests/lib/mirrors/function_apply_mirrors_test.dart
diff --git a/tests/lib/mirrors/function_apply_mirrors_test.dart b/tests/lib/mirrors/function_apply_mirrors_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a322afb5d1ca64192c852b9dfa399985b91afa47
--- /dev/null
+++ b/tests/lib/mirrors/function_apply_mirrors_test.dart
@@ -0,0 +1,18 @@
+// Copyright (c) 2015, 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.
+
+// Only 'lib' imports mirrors.
+// Function.apply is resolved, before it is known that mirrors are used.
+// Dart2js must not switch the resolved function.apply when it discovers the use
+// of mirrors.

[Siggi Cherem (dart-lang), 2015/08/05 15:59:02]

not sure I entirely follow - what were you expecting it to change to?

[floitsch, 2015/08/06 09:35:07]

Updated the comment.

+import 'function_apply_mirrors_lib.dart' as lib;
+
+import "package:expect/expect.dart";
+
+int foo({x: 499, y: 42}) => x + y;
+
+main() {
+  Expect.equals(709, Function.apply(foo, [], {#y: 210}));
+  Expect.equals(499, lib.bar());
+}