tests/lib: init env-specific subset

tests/lib/default.nix

@@ -1,4 +1,5 @@
-{ pkgs }:
+# For the environment-specific subset, we'll be simulating the configurations
+# as a simple attribute set since that's what they are anyways.
 
 let
   inherit (pkgs) lib;
@@ -16,5 +17,9 @@ let
 in
 {
   trivial = callLib ./trivial.nix;
-  #home-manager = callLib ./home-manager.nix;
+
+  # Environment-specific subset.
+  home-manager = callLib ./home-manager.nix;
+  nixos = callLib ./nixos.nix;
+  nixvim = callLib ./nixvim.nix;
 }

tests/lib/home-manager.nix

@@ -0,0 +1,57 @@
+{ pkgs, lib, self }:
+
+let
+  # We're just using stub configurations instead.
+  nixosConfig = {
+    programs = {
+      firefox = {
+        enable = true;
+      };
+    };
+
+    services = {
+      pipewire = {
+        enable = true;
+        wireplumber.enable = true;
+        alsa.enable = true;
+        alsa.support32Bit = true;
+        pulse.enable = true;
+        jack.enable = true;
+      };
+    };
+  };
+
+  hmConfig = {
+    services = {
+      activitywatch.enable = true;
+      bleachbit = {
+        enable = true;
+        cleaners = [
+          "firefox.cookies"
+          "discord.cache"
+        ];
+      };
+    };
+  };
+
+  hmConfig' = {
+    inherit nixosConfig;
+    osConfig = nixosConfig;
+  } // hmConfig;
+in
+lib.runTests {
+  testHomeManagerStandaloneEmpty = {
+    expr = self.home-manager.hasNixOSConfigAttr { } [ "programs" "firefox" "enable" ] false;
+    expected = false;
+  };
+
+  testHomeManagerStandalone = {
+    expr = self.home-manager.hasNixOSConfigAttr hmConfig [ "programs" "firefox" "enable" ] false;
+    expected = false;
+  };
+
+  testHomeManagerWithinNixOS = {
+    expr = self.home-manager.hasNixOSConfigAttr hmConfig' [ "programs" "firefox" "enable" ] false;
+    expected = true;
+  };
+}

tests/lib/nixos.nix

@@ -0,0 +1,28 @@
+{ pkgs, lib, self }:
+
+let
+  testConfig = {
+    formatAttr = "isoImage";
+  };
+in
+lib.runTests {
+  testNixSystemHasFormat = {
+    expr = self.nixos.hasNixosFormat testConfig;
+    expected = true;
+  };
+
+  testNixSystemNoFormat = {
+    expr = self.nixos.hasNixosFormat { };
+    expected = false;
+  };
+
+  testNixSystemFormatCompare = {
+    expr = self.nixos.isFormat testConfig "isoImage";
+    expected = true;
+  };
+
+  testNixSystemFormatCompare2 = {
+    expr = self.nixos.isFormat { } "isoImage";
+    expected = false;
+  };
+}

tests/lib/nixvim.nix

@@ -0,0 +1,28 @@
+{ pkgs, lib, self }:
+
+let
+  nixvimConfig = {
+    plugins.lightline.enable = true;
+
+    plugins.neorg.enable = true;
+  };
+
+  nixosConfig = {
+    programs.firefox.enable = true;
+  };
+
+  nixvimConfig' = {
+    inherit nixosConfig;
+  } // nixvimConfig;
+in
+lib.runTests {
+  testNixvimIsStandalone = {
+    expr = self.nixvim.isStandalone nixvimConfig;
+    expected = true;
+  };
+
+  testNixvimIsStandalone2 = {
+    expr = self.nixvim.isStandalone nixvimConfig';
+    expected = false;
+  };
+}