python: Add explicit g.close() method (RHBZ#717786).

[libguestfs.git] / python / t / 800-explicit-close.py

diff --git a/python/t/800-explicit-close.py b/python/t/800-explicit-close.py
new file mode 100644 (file)
index 0000000..291534d
--- /dev/null
+++ b/python/t/800-explicit-close.py
@@ -0,0 +1,59 @@
+# libguestfs Python bindings
+# Copyright (C) 2011 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Test implicit vs explicit closes of the handle (RHBZ#717786).
+
+import os
+import guestfs
+
+g = guestfs.GuestFS ()
+
+g.close ()                      # explicit close
+del g                           # implicit close - should be no error/warning
+
+# Expect an exception if we call a method on a closed handle.
+g = guestfs.GuestFS ()
+g.close ()
+try:
+    g.set_memsize (512)
+    raise Exception("expected an exception from previous statement")
+except guestfs.ClosedHandle:
+    pass
+del g
+
+# Verify that the handle is really being closed by g.close, by setting
+# up a close event and testing that it happened.
+g = guestfs.GuestFS ()
+
+close_invoked = 0
+
+def close_callback (ev, eh, buf, array):
+    global close_invoked
+    close_invoked += 1
+
+g.set_event_callback (close_callback, guestfs.EVENT_CLOSE)
+
+if close_invoked != 0:
+    raise Exception("close_invoked should be 0")
+
+g.close ()
+if close_invoked != 1:
+    raise Exception("close_invoked should be 1")
+
+del g
+if close_invoked != 1:
+    raise Exception("close_invoked should be 1")