Stop printing when stdout is closed.

tests/standalone/io/stdout_close_test.dart

Index: tests/standalone/io/stdout_close_test.dart
diff --git a/tests/standalone/io/stdout_close_test.dart b/tests/standalone/io/stdout_close_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..9ad2312b3d0037f85cf085e6b80dbfac3b8d2272
--- /dev/null
+++ b/tests/standalone/io/stdout_close_test.dart
@@ -0,0 +1,20 @@
+// 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.
+
+import "package:expect/expect.dart";
+import "dart:io";
+
+void main() {
+  stdout.close().then((_) {
+    var dir = new Directory('').createTempSync();

[kustermann, 2013/06/27 11:51:09]

Move that line above, in case createTempSync() uses a file descriptor.

[Anders Johnsen, 2013/06/27 14:45:52]

Done.

+    var file = new File('dev/file');

[kustermann, 2013/06/27 11:51:09]

Did you mean 'new File("$dir/file")?

[Anders Johnsen, 2013/06/27 14:45:52]

Done.

+    var io = file.openSync(mode: FileMode.WRITE);
+    print("to file");
+    io.closeSync();
+    Expect.equals("", file.readAsStringSync());

[kustermann, 2013/06/27 11:51:09]

If this expect throws, we leave a temporary directory (+ a file) behind. Maybe
cleaning up in a try { } finally {}?

[Anders Johnsen, 2013/06/27 14:45:52]

Done.

+    file.deleteSync();
+    dir.deleteSync();
+  });
+}
+