1 files changed, 117 insertions, 0 deletions
diff --git a/nixpkgs/nixos/tests/xmonad.nix b/nixpkgs/nixos/tests/xmonad.nix
new file mode 100644
index 000000000000..ec48c3e11275
--- /dev/null
+++ b/nixpkgs/nixos/tests/xmonad.nix
@@ -0,0 +1,117 @@
+import ./make-test-python.nix ({ pkgs, ...}:
+
+let
+  mkConfig = name: keys: ''
+    import XMonad
+    import XMonad.Operations (restart)
+    import XMonad.Util.EZConfig
+    import XMonad.Util.SessionStart
+    import Control.Monad (when)
+    import Text.Printf (printf)
+    import System.Posix.Process (executeFile)
+    import System.Info (arch,os)
+    import System.Environment (getArgs)
+    import System.FilePath ((</>))
+
+    main = do
+      dirs <- getDirectories
+      launch (def { startupHook = startup } `additionalKeysP` myKeys) dirs
+
+    startup = isSessionStart >>= \sessInit ->
+      spawn "touch /tmp/${name}"
+        >> if sessInit then setSessionStarted else spawn "xterm"
+
+    myKeys = [${builtins.concatStringsSep ", " keys}]
+
+    compiledConfig = printf "xmonad-%s-%s" arch os
+
+    compileRestart resume = do
+      dirs <- asks directories
+
+      whenX (recompile dirs True) $
+        when resume writeStateToFile
+          *> catchIO
+            ( do
+                args <- getArgs
+                executeFile (cacheDir dirs </> compiledConfig) False args Nothing
+            )
+  '';
+
+  oldKeys =
+    [ ''("M-C-x", spawn "xterm")''
+      ''("M-q", restart "xmonad" True)''
+      ''("M-C-q", compileRestart True)''
+      ''("M-C-t", spawn "touch /tmp/somefile")'' # create somefile
+    ];
+
+  newKeys =
+    [ ''("M-C-x", spawn "xterm")''
+      ''("M-q", restart "xmonad" True)''
+      ''("M-C-q", compileRestart True)''
+      ''("M-C-r", spawn "rm /tmp/somefile")'' # delete somefile
+    ];
+
+  newConfig = pkgs.writeText "xmonad.hs" (mkConfig "newXMonad" newKeys);
+in {
+  name = "xmonad";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ nequissimus ivanbrennan ];
+  };
+
+  nodes.machine = { pkgs, ... }: {
+    imports = [ ./common/x11.nix ./common/user-account.nix ];
+    test-support.displayManager.auto.user = "alice";
+    services.xserver.displayManager.defaultSession = "none+xmonad";
+    services.xserver.windowManager.xmonad = {
+      enable = true;
+      enableConfiguredRecompile = true;
+      enableContribAndExtras = true;
+      extraPackages = with pkgs.haskellPackages; haskellPackages: [ xmobar ];
+      config = mkConfig "oldXMonad" oldKeys;
+    };
+  };
+
+  testScript = { nodes, ... }: let
+    user = nodes.machine.config.users.users.alice;
+  in ''
+    machine.wait_for_x()
+    machine.wait_for_file("${user.home}/.Xauthority")
+    machine.succeed("xauth merge ${user.home}/.Xauthority")
+    machine.send_key("alt-ctrl-x")
+    machine.wait_for_window("${user.name}.*machine")
+    machine.sleep(1)
+    machine.screenshot("terminal1")
+    machine.succeed("rm /tmp/oldXMonad")
+    machine.send_key("alt-q")
+    machine.wait_for_file("/tmp/oldXMonad")
+    machine.wait_for_window("${user.name}.*machine")
+    machine.sleep(1)
+    machine.screenshot("terminal2")
+
+    # /tmp/somefile should not exist yet
+    machine.fail("stat /tmp/somefile")
+
+    # original config has a keybinding that creates somefile
+    machine.send_key("alt-ctrl-t")
+    machine.wait_for_file("/tmp/somefile")
+
+    # set up the new config
+    machine.succeed("mkdir -p ${user.home}/.xmonad")
+    machine.copy_from_host("${newConfig}", "${user.home}/.config/xmonad/xmonad.hs")
+
+    # recompile xmonad using the new config
+    machine.send_key("alt-ctrl-q")
+    machine.wait_for_file("/tmp/newXMonad")
+
+    # new config has a keybinding that deletes somefile
+    machine.send_key("alt-ctrl-r")
+    machine.wait_until_fails("stat /tmp/somefile", timeout=30)
+
+    # restart with the old config, and confirm the old keybinding is back
+    machine.succeed("rm /tmp/oldXMonad")
+    machine.send_key("alt-q")
+    machine.wait_for_file("/tmp/oldXMonad")
+    machine.send_key("alt-ctrl-t")
+    machine.wait_for_file("/tmp/somefile")
+  '';
+})