jujutsu: add module

tests/modules/programs/jujutsu/default.nix

@@ -0,0 +1,4 @@
+{
+  jujutsu-example-config = ./example-config.nix;
+  jujutsu-empty-config = ./empty-config.nix;
+}

tests/modules/programs/jujutsu/empty-config.nix

@@ -0,0 +1,11 @@
+{ ... }:
+
+{
+  programs.jujutsu.enable = true;
+
+  test.stubs.jujutsu = { };
+
+  nmt.script = ''
+    assertPathNotExists home-files/.jjconfig.toml
+  '';
+}

tests/modules/programs/jujutsu/example-config.nix

@@ -0,0 +1,27 @@
+{ config, ... }:
+
+{
+  programs.jujutsu = {
+    enable = true;
+    package = config.lib.test.mkStubPackage { };
+    settings = {
+      user = {
+        name = "John Doe";
+        email = "jdoe@example.org";
+      };
+    };
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.jjconfig.toml
+    assertFileContent \
+      home-files/.jjconfig.toml \
+      ${
+        builtins.toFile "expected.toml" ''
+          [user]
+          email = "jdoe@example.org"
+          name = "John Doe"
+        ''
+      }
+  '';
+}