Migrating another batch of tests to dart 2.

tests/language_2/closure_type_test.dart

Index: tests/language_2/closure_type_test.dart
diff --git a/tests/language_2/closure_type_test.dart b/tests/language_2/closure_type_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..c388b322cd36fd5db81dce9f935b0b287d00004e
--- /dev/null
+++ b/tests/language_2/closure_type_test.dart
@@ -0,0 +1,33 @@
+// Copyright (c) 2012, 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.
+
+// Dart test for a closure result type test that cannot be eliminated at compile
+// time.
+
+import "package:expect/expect.dart";
+
+void test(A func(String value), String value) {
+  Expect.throws(() {
+      B x = func(value);
+  }, (e) => e is TypeError);
+}
+
+
+class A {
+}
+
+class B extends A {
+}
+
+class C {
+  static A a(String x) => new A();
+}
+
+A aclosure(String x) => C.a(x);
+A bclosure() => new A(); 
+
+main() {
+  test(aclosure, "foo");
+  test((bar) => bclosure(), "baz");
+}