Support runtime check of function types.

tests/language/function_subtype_setter0_test.dart

Index: tests/language/function_subtype_setter0_test.dart
diff --git a/tests/language/checked_setter_test.dart b/tests/language/function_subtype_setter0_test.dart
similarity index 50%
copy from tests/language/checked_setter_test.dart
copy to tests/language/function_subtype_setter0_test.dart
index 608a472f9c8dc27855c6bfa9650b6cfcec970635..9e6170b30a6b9712db3bbbe8de703073158b3007 100644
--- a/tests/language/checked_setter_test.dart
+++ b/tests/language/function_subtype_setter0_test.dart
@@ -1,25 +1,26 @@
 // 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.
+// Dart test program for constructors and initializers.
 
-// Test that implicit setters in checked mode do a type check.
+// Check function subtyping for implicit setters.
 
-import "package:expect/expect.dart";
+import 'package:expect/expect.dart';
 
-class A {
-  C c;
-}
-
-class B extends A {
-}
+typedef void Foo();
+class A<T> {}
 
 class C {
+  Foo foo;
+  A<int> bar;
 }
 
-var array = [new B()];
+class D {
+  Foo foo;
+  A<int> bar;
+}
 
-main() {
-  array[0].c = new C();
+test(var c) {
   bool inCheckedMode = false;
   try {
     String a = 42;

[karlklose, 2013/06/20 13:11:04]

Use
 var x = 42;
 String a = x;
to avoid warnings from the analyzer.

[Johnni Winther, 2013/06/21 12:19:15]

Done.

@@ -27,6 +28,12 @@ main() {
     inCheckedMode = true;
   }
   if (inCheckedMode) {
-    Expect.throws(() => array[0].c = new B(), (e) => e is TypeError);
+    Expect.throws(() => c.foo = 1, (e) => true);
   }
+  c.foo = () {};
+}
+
+void main() {
+  test(new C());
+  test(new D());
 }