tests: Add environment

nixos/release-combined.nix

@@ -82,6 +82,7 @@ in rec {
         (all nixos.tests.boot-stage1)
         nixos.tests.hibernate.x86_64-linux # i686 is flaky, see #23107
         (all nixos.tests.ecryptfs)
+        (all nixos.tests.env)
         (all nixos.tests.ipv6)
         (all nixos.tests.i3wm)
         (all nixos.tests.keymap.azerty)

nixos/release.nix

@@ -240,6 +240,7 @@ in rec {
   tests.ec2-nixops = hydraJob (import tests/ec2.nix { system = "x86_64-linux"; }).boot-ec2-nixops;
   tests.ec2-config = hydraJob (import tests/ec2.nix { system = "x86_64-linux"; }).boot-ec2-config;
   tests.elk = callTest tests/elk.nix {};
+  tests.env = callTest tests/env.nix {};
   tests.ferm = callTest tests/ferm.nix {};
   tests.firefox = callTest tests/firefox.nix {};
   tests.firewall = callTest tests/firewall.nix {};

nixos/tests/env.nix

@@ -0,0 +1,35 @@
+import ./make-test.nix ({ pkgs, ...} : {
+  name = "environment";
+  meta = with pkgs.stdenv.lib.maintainers; {
+    maintainers = [ nequissimus ];
+  };
+
+  machine = { config, lib, pkgs, ... }:
+    {
+      boot.kernelPackages = pkgs.linuxPackages;
+      environment.etc."plainFile".text = ''
+        Hello World
+      '';
+      environment.etc."folder/with/file".text = ''
+        Foo Bar!
+      '';
+
+      environment.sessionVariables = {
+        TERMINFO_DIRS = "/run/current-system/sw/share/terminfo";
+        NIXCON = "awesome";
+      };
+    };
+
+  testScript =
+    ''
+      $machine->succeed('[ -L "/etc/plainFile" ]');
+      $machine->succeed('cat "/etc/plainFile" | grep "Hello World"');
+      $machine->succeed('[ -d "/etc/folder" ]');
+      $machine->succeed('[ -d "/etc/folder/with" ]');
+      $machine->succeed('[ -L "/etc/folder/with/file" ]');
+      $machine->succeed('cat "/etc/plainFile" | grep "Hello World"');
+
+      $machine->succeed('echo ''${TERMINFO_DIRS} | grep "/run/current-system/sw/share/terminfo"');
+      $machine->succeed('echo ''${NIXCON} | grep "awesome"');
+    '';
+})