diff --git a/tests/test-sources/plugins/utils/undotree.nix b/tests/test-sources/plugins/utils/undotree.nix
new file mode 100644
index 00000000..87d8e68b
--- /dev/null
+++ b/tests/test-sources/plugins/utils/undotree.nix
@@ -0,0 +1,33 @@
+{
+  empty = {
+    plugins.undotree.enable = true;
+  };
+
+  example = {
+    plugins.undotree = {
+      enable = true;
+
+      settings = {
+        WindowLayout = 4;
+        ShortIndicators = false;
+        DiffpanelHeight = 10;
+        DiffAutoOpen = true;
+        SetFocusWhenToggle = true;
+        SplitWidth = 40;
+        TreeNodeShape = "*";
+        TreeVertShape = "|";
+        TreeSplitShape = "/";
+        TreeReturnShape = "\\";
+        DiffCommand = "diff";
+        RelativeTimestamp = true;
+        HighlightChangedText = true;
+        HighlightChangedWithSign = true;
+        HighlightSyntaxAdd = "DiffAdd";
+        HighlightSyntaxChange = "DiffChange";
+        HighlightSyntaxDel = "DiffDelete";
+        HelpLine = true;
+        CursorLine = true;
+      };
+    };
+  };
+}