nixos/tests: fix tests that use SDDM

Newer versions of SDDM moved the Xauth cookie from /tmp
to $XDG_RUNTIME_DIR, so update tests accordingly.

Also, add a delay before reading the cookie, as SDDM
does not create the file atomically, so it's possible
we try to read it before the cookie is actually written.

nixos/tests/lxqt.nix

@@ -37,6 +37,7 @@
       with subtest("Wait for login"):
           machine.wait_for_x()
           machine.wait_for_file("/tmp/xauth_*")
+          machine.sleep(1)
           machine.succeed("xauth merge /tmp/xauth_*")
           machine.succeed("su - ${user.name} -c 'xauth merge /tmp/xauth_*'")
 

nixos/tests/maestral.nix

@@ -70,8 +70,9 @@
 
       with subtest("GUI"):
         gui.wait_for_x()
-        gui.wait_for_file("/tmp/xauth_*")
-        gui.succeed("xauth merge /tmp/xauth_*")
+        gui.wait_for_file("/run/user/1000/xauth_*")
+        gui.sleep(1)
+        gui.succeed("xauth merge /run/user/1000/xauth_*")
         gui.wait_for_window("^Desktop ")
         gui.wait_for_unit("maestral.service", "${user.name}")
     '';

nixos/tests/plasma6.nix

@@ -32,8 +32,10 @@
     ''
       with subtest("Wait for login"):
           start_all()
-          machine.wait_for_file("/tmp/xauth_*")
-          machine.succeed("xauth merge /tmp/xauth_*")
+          machine.wait_for_file("/run/user/1000/xauth_*")
+          machine.sleep(1)
+          machine.succeed("xauth merge /run/user/1000/xauth_*")
+          machine.succeed("su - ${user.name} -c 'xauth merge /run/user/1000/xauth_*'")
 
       with subtest("Check plasmashell started"):
           machine.wait_until_succeeds("pgrep plasmashell")
@@ -45,8 +47,6 @@
       with subtest("Ensure Elisa is not installed"):
           machine.fail("which elisa")
 
-      machine.succeed("su - ${user.name} -c 'xauth merge /tmp/xauth_*'")
-
       with subtest("Run Dolphin"):
           machine.execute("su - ${user.name} -c 'DISPLAY=:0.0 dolphin >&2 &'")
           machine.wait_for_window(" Dolphin")

nixos/tests/retroarch.nix

@@ -35,8 +35,9 @@
     ''
       with subtest("Wait for login"):
           start_all()
-          machine.wait_for_file("/tmp/xauth_*")
-          machine.succeed("xauth merge /tmp/xauth_*")
+          machine.wait_for_file("/run/sddm/xauth_*")
+          machine.sleep(1)
+          machine.succeed("xauth merge /run/sddm/xauth_*")
 
       with subtest("Check RetroArch started"):
           machine.wait_until_succeeds("pgrep retroarch")

nixos/tests/sddm.nix

@@ -24,6 +24,7 @@
         machine.screenshot("sddm")
         machine.send_chars("${user.password}\n")
         machine.wait_for_file("/tmp/xauth_*")
+        machine.sleep(1)
         machine.succeed("xauth merge /tmp/xauth_*")
         machine.wait_for_window("^IceWM ")
       '';
@@ -54,6 +55,7 @@
       testScript = ''
         start_all()
         machine.wait_for_file("/tmp/xauth_*")
+        machine.sleep(1)
         machine.succeed("xauth merge /tmp/xauth_*")
         machine.wait_for_window("^IceWM ")
       '';