1 files changed, 44 insertions, 0 deletions
diff --git a/nixpkgs/nixos/tests/hddfancontrol.nix b/nixpkgs/nixos/tests/hddfancontrol.nix
new file mode 100644
index 000000000000..b5fa7ccb2c19
--- /dev/null
+++ b/nixpkgs/nixos/tests/hddfancontrol.nix
@@ -0,0 +1,44 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "hddfancontrol";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ benley ];
+  };
+
+  nodes.machine = { ... }: {
+    imports = [ ../modules/profiles/minimal.nix ];
+
+    services.hddfancontrol.enable = true;
+    services.hddfancontrol.disks = ["/dev/vda"];
+    services.hddfancontrol.pwmPaths = ["/test/hwmon1/pwm1"];
+    services.hddfancontrol.extraArgs = ["--pwm-start-value=32"
+                                        "--pwm-stop-value=0"];
+
+    systemd.services.hddfancontrol_fixtures = {
+      description = "Install test fixtures for hddfancontrol";
+      serviceConfig = {
+        Type = "oneshot";
+      };
+      script = ''
+        mkdir -p /test/hwmon1
+        echo 255 > /test/hwmon1/pwm1
+        echo 2 > /test/hwmon1/pwm1_enable
+      '';
+      wantedBy = ["hddfancontrol.service"];
+      before = ["hddfancontrol.service"];
+    };
+
+    systemd.services.hddfancontrol.serviceConfig.ReadWritePaths = "/test";
+  };
+
+  # hddfancontrol.service will fail to start because qemu /dev/vda doesn't have
+  # any thermal interfaces, but it should ensure that fans appear to be running
+  # before it aborts.
+  testScript = ''
+    start_all()
+    machine.wait_for_unit("multi-user.target")
+    machine.succeed("journalctl -eu hddfancontrol.service|grep 'Setting fan speed'")
+    machine.shutdown()
+
+  '';
+
+})