1 files changed, 52 insertions, 0 deletions
diff --git a/tests/testcases/issue239_2.py b/tests/testcases/issue239_2.py
new file mode 100644
index 0000000..54f5412
--- /dev/null
+++ b/tests/testcases/issue239_2.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+
+import xcffib.xproto as xproto
+import xcffib
+import time
+
+conn = xcffib.connect()
+setup = conn.get_setup()
+root = setup.roots[0].root
+visual = setup.roots[0].root_visual
+depth = setup.roots[0].root_depth
+
+# issue 239 is caused by a window gaining a shadow during its fade-out transition
+wid = conn.generate_id()
+print("Window ids are ", hex(wid))
+
+# Create a window
+mask = xproto.CW.BackPixel
+value = [ setup.roots[0].white_pixel ]
+conn.core.CreateWindowChecked(depth, wid, root, 0, 0, 100, 100, 0, xproto.WindowClass.InputOutput, visual, mask, value).check()
+
+name = "_NET_WM_STATE"
+name_atom = conn.core.InternAtom(False, len(name), name).reply().atom
+atom = "ATOM"
+atom_atom = conn.core.InternAtom(False, len(atom), atom).reply().atom
+fs = "_NET_WM_STATE_FULLSCREEN"
+fs_atom = conn.core.InternAtom(False, len(fs), fs).reply().atom
+
+
+# Map the window, causing screen to be redirected
+conn.core.MapWindowChecked(wid).check()
+
+time.sleep(0.5)
+
+# Set fullscreen property, causing screen to be unredirected
+conn.core.ChangePropertyChecked(xproto.PropMode.Replace, wid, name_atom, atom_atom, 32, 1, [fs_atom]).check()
+
+time.sleep(0.5)
+
+# Clear fullscreen property, causing screen to be redirected
+conn.core.ChangePropertyChecked(xproto.PropMode.Replace, wid, name_atom, atom_atom, 32, 0, []).check()
+
+# Do a round trip to X server so the compositor has a chance to start the rerun of _draw_callback
+conn.core.GetInputFocus().reply()
+
+# Unmap the window, triggers the bug
+conn.core.UnmapWindowChecked(wid).check()
+
+time.sleep(0.5)
+
+# Destroy the window
+conn.core.DestroyWindowChecked(wid).check()