Let operator* in Duration accept doubles.

tests/corelib/duration_big_num_test.dart

 // 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.
 
-// Test that dart2js treats [:this():] as a closure send.
+import "package:expect/expect.dart";
+import 'dart:math';
 
-import "package:expect/expect.dart";
+main() {
+  Duration d, d1;
 
-class A {
-  call() => 42;
-  test1() => this();
-  test2() => (this)();
+  d1 = new Duration(microseconds: pow(2,53));

[floitsch, 2013/06/25 15:28:02]

space between , and 53: pow(2, 53)

[zarah, 2013/06/25 15:54:05]

Done.

+  d = d1 * 2;
+  Expect.equals(pow(2,54), d.inMicroseconds);

[floitsch, 2013/06/25 15:28:02]

ditto.

[zarah, 2013/06/25 15:54:05]

Done.

+  d = d1 * 1.5;
+  Expect.equals(pow(2,53).toDouble() * 1.5, d.inMicroseconds);

[floitsch, 2013/06/25 15:28:02]

ditto.

[zarah, 2013/06/25 15:54:05]

Done.

 }

[floitsch, 2013/06/25 15:28:02]

Add line testing that inMicroseconds still is an integer.
Expect.isTrue(d.inMicroseconds is int);

Also test, that we actually go through the "toDouble":

// Test that we lose precision when multiplying with a double.
d = new Duration(microseconds: pow(2, 53) + 1) * 1.0;
Expect.equals(0, d.inMicroseconds % 2);

[zarah, 2013/06/25 15:54:05]

Done.

 
-main() {
-  Expect.equals(42, (new A()).test1());
-  Expect.equals(42, (new A()).test2());
-}