Check for correct behavior when invoking reflectClass() with incorrect arguments.

tests/lib/mirrors/reflect_class_test.dart

Index: tests/lib/mirrors/reflect_class_test.dart
diff --git a/tests/lib/mirrors/reflect_class_test.dart b/tests/lib/mirrors/reflect_class_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d1def59f9d2e144c42bf7e6f7862868026acc868
--- /dev/null
+++ b/tests/lib/mirrors/reflect_class_test.dart
@@ -0,0 +1,29 @@
+// Copyright (c) 2013, 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.
+
+// This test uses the multi-test "ok" feature.
+// none: Tests as specified in the spec/API. Pass in the VM.
+// 01: dart2js version that expects NSM instead of ArgumentError.
+//
+// TODO(ahe,rmacnak): When both implementations agree, remove the multi-test

[rmacnak, 2013/09/18 00:11:24]

I don't see value in using a multitest here. This test does not cover any
partially correct behavior in dart2js. I would rather have a flat test and mark
dart2js as failing.

[Michael Lippautz (Google), 2013/09/18 20:23:22]

Done.

+// parts.
+
+import "dart:mirrors";
+
+import "package:expect/expect.dart";
+
+typedef void FooFunction(int a, double b);
+
+main() {
+  var expectedError = (e) => e is ArgumentError;
+  expectedError = (e) => e is NoSuchMethodError;   /// 01: ok
+
+  Expect.throws(() => reflectClass(dynamic), expectedError);
+  Expect.throws(() => reflectClass(1), expectedError);
+  Expect.throws(() => reflectClass("string"), expectedError);
+
+  // reflectClass() on a function type should fail once typedefs are represented
+  // by typedefmirrors instead of classmirrors.
+  // Expect.throws(() => reflectClass(FooFunction), expectedError);
+}