dwm picom added

dwm/picom/tests/testcases/issue239.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import xcffib.xproto as xproto
+import xcffib
+import time
+from common import set_window_name
+
+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 id is ", hex(wid))
+
+# Create a window
+conn.core.CreateWindowChecked(depth, wid, root, 0, 0, 100, 100, 0, xproto.WindowClass.InputOutput, visual, 0, []).check()
+
+# Set Window name so it doesn't get a shadow
+set_window_name(conn, wid, "NoShadow")
+
+# Map the window
+print("mapping")
+conn.core.MapWindowChecked(wid).check()
+
+time.sleep(0.5)
+
+# Set the Window name so it gets a shadow
+print("set new name")
+set_window_name(conn, wid, "YesShadow")
+
+# Unmap the window
+conn.core.UnmapWindowChecked(wid).check()
+
+time.sleep(0.5)
+
+# Destroy the window
+conn.core.DestroyWindowChecked(wid).check()