Add corelib tests

test/codegen/corelib/double_truncate2_test.dart

Index: test/codegen/corelib/double_truncate2_test.dart
diff --git a/test/codegen/language/call_property_test.dart b/test/codegen/corelib/double_truncate2_test.dart
similarity index 50%
copy from test/codegen/language/call_property_test.dart
copy to test/codegen/corelib/double_truncate2_test.dart
index fbab14684ec543e9f18b68191b9b4f6e171d8d30..675980afe2281e7a45ce130740b3f6f208ac15ef 100644
--- a/test/codegen/language/call_property_test.dart
+++ b/test/codegen/corelib/double_truncate2_test.dart
@@ -2,18 +2,11 @@
 // 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.
 
-// Test that a class with a [call] property does not implement [Function] or
-// a typedef of function type.
-
 import 'package:expect/expect.dart';
 
-class Call {
-  int get call => 0;
-}
-
-typedef void F();
-
 main() {
-  Expect.isFalse(new Call() is Function);
-  Expect.isFalse(new Call() is F);
-}
+  Expect.throws(() => double.INFINITY.truncate(), (e) => e is UnsupportedError);
+  Expect.throws(() => double.NEGATIVE_INFINITY.truncate(),
+                (e) => e is UnsupportedError);
+  Expect.throws(() => double.NAN.truncate(), (e) => e is UnsupportedError);
+}