nixosTests.kmscon: init (#483223)

nixos/tests/all-tests.nix

@@ -837,6 +837,7 @@ in
   kimai = runTest ./kimai.nix;
   kismet = runTest ./kismet.nix;
   kmonad = runTest ./kmonad.nix;
+  kmscon = runTest ./kmscon.nix;
   knot = runTest ./knot.nix;
   komga = runTest ./komga.nix;
   komodo-periphery = runTest ./komodo-periphery.nix;

nixos/tests/kmscon.nix

@@ -0,0 +1,43 @@
+{ ... }:
+{
+  name = "kmscon";
+
+  nodes.machine =
+    {
+      pkgs,
+      lib,
+      ...
+    }:
+    {
+      imports = [
+        ./common/user-account.nix
+      ];
+
+      services.kmscon = {
+        enable = true;
+        hwRender = true;
+        fonts = [
+          {
+            name = "JetBrainsMono Nerd Font";
+            package = pkgs.nerd-fonts.jetbrains-mono;
+          }
+        ];
+        package = pkgs.kmscon;
+      };
+    };
+
+  enableOCR = true;
+
+  testScript = ''
+    machine.succeed(":")
+    # ^ this create a screen
+
+    with subtest("ensure we can open a tty"):
+      machine.wait_for_text("machine login:")
+      machine.send_chars("alice\n")
+      machine.wait_for_text("Password:")
+      machine.send_chars("foobar\n")
+      machine.wait_for_text("alice@machine")
+      machine.screenshot("tty.png")
+  '';
+}

pkgs/by-name/km/kmscon/package.nix

@@ -19,6 +19,7 @@
   bash,
   buildPackages,
   nix-update-script,
+  nixosTests,
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "kmscon";
@@ -63,7 +64,10 @@ stdenv.mkDerivation (finalAttrs: {
     ./sandbox.patch # Generate system units where they should be (nix store) instead of /etc/systemd/system
   ];
 
-  passthru.updateScript = nix-update-script { extraArgs = [ "--use-github-releases" ]; };
+  passthru = {
+    tests.kmscon = nixosTests.kmscon;
+    updateScript = nix-update-script { extraArgs = [ "--use-github-releases" ]; };
+  };
 
   meta = {
     description = "KMS/DRM based System Console";