feat: unit tests

outputs/x86_64-linux/tests/home-manager/expected.nix

@@ -0,0 +1,15 @@
+{
+  myvars,
+  lib,
+}: let
+  username = myvars.username;
+  hosts = [
+    "ai-hyprland"
+    "ai-i3"
+    "shoukei-hyprland"
+    "shoukei-i3"
+    "ruby"
+    "k3s-prod-1-master-1"
+  ];
+in
+  lib.genAttrs hosts (_: "/home/${username}")

outputs/x86_64-linux/tests/home-manager/expr.nix

@@ -0,0 +1,20 @@
+{
+  myvars,
+  lib,
+  outputs,
+}: let
+  username = myvars.username;
+  hosts = [
+    "ai-hyprland"
+    "ai-i3"
+    "shoukei-hyprland"
+    "shoukei-i3"
+    "ruby"
+    "k3s-prod-1-master-1"
+  ];
+in
+  lib.genAttrs
+  hosts
+  (
+    name: outputs.nixosConfigurations.${name}.config.home-manager.users.${username}.home.homeDirectory
+  )

outputs/x86_64-linux/tests/hostname/expected.nix

@@ -0,0 +1,17 @@
+{
+  lib,
+  outputs,
+}: let
+  specialExpected = {
+    "ai-hyprland" = "ai";
+    "ai-i3" = "ai";
+    "shoukei-hyprland" = "shoukei";
+    "shoukei-i3" = "shoukei";
+  };
+  specialHostNames = builtins.attrNames specialExpected;
+
+  otherHosts = builtins.removeAttrs outputs.nixosConfigurations specialHostNames;
+  otherHostsNames = builtins.attrNames otherHosts;
+  # other hosts's hostName is the same as the nixosConfigurations name
+  otherExpected = lib.genAttrs otherHostsNames (name: name);
+in (specialExpected // otherExpected)

outputs/x86_64-linux/tests/hostname/expr.nix

@@ -0,0 +1,9 @@
+{
+  lib,
+  outputs,
+}:
+lib.genAttrs
+(builtins.attrNames outputs.nixosConfigurations)
+(
+  name: outputs.nixosConfigurations.${name}.config.networking.hostName
+)