nano: Add test

nixos/tests/all-tests.nix

@@ -225,6 +225,7 @@ in
   mysql-backup = handleTest ./mysql/mysql-backup.nix {};
   mysql-replication = handleTest ./mysql/mysql-replication.nix {};
   nagios = handleTest ./nagios.nix {};
+  nano = handleTest ./nano.nix {};
   nar-serve = handleTest ./nar-serve.nix {};
   nat.firewall = handleTest ./nat.nix { withFirewall = true; };
   nat.firewall-conntrack = handleTest ./nat.nix { withFirewall = true; withConntrackHelpers = true; };

nixos/tests/nano.nix

@@ -0,0 +1,44 @@
+import ./make-test-python.nix ({ pkgs, ...} : {
+  name = "nano";
+  meta = with pkgs.stdenv.lib.maintainers; {
+    maintainers = [ nequissimus ];
+  };
+
+  machine = { lib, ... }: {
+    environment.systemPackages = [ pkgs.nano ];
+  };
+
+  testScript = { ... }: ''
+    start_all()
+
+    with subtest("Create user and log in"):
+        machine.wait_for_unit("multi-user.target")
+        machine.wait_until_succeeds("pgrep -f 'agetty.*tty1'")
+        machine.succeed("useradd -m alice")
+        machine.succeed("(echo foobar; echo foobar) | passwd alice")
+        machine.wait_until_tty_matches(1, "login: ")
+        machine.send_chars("alice\n")
+        machine.wait_until_tty_matches(1, "login: alice")
+        machine.wait_until_succeeds("pgrep login")
+        machine.wait_until_tty_matches(1, "Password: ")
+        machine.send_chars("foobar\n")
+        machine.wait_until_succeeds("pgrep -u alice bash")
+        machine.screenshot("prompt")
+
+    with subtest("Use nano"):
+        machine.send_chars("nano /tmp/foo")
+        machine.send_key("ret")
+        machine.sleep(2)
+        machine.send_chars("42")
+        machine.sleep(1)
+        machine.send_key("ctrl-x")
+        machine.sleep(1)
+        machine.send_key("y")
+        machine.sleep(1)
+        machine.screenshot("nano")
+        machine.sleep(1)
+        machine.send_key("ret")
+        machine.wait_for_file("/tmp/foo")
+        assert "42" in machine.succeed("cat /tmp/foo")
+  '';
+})