diff --git a/projects/nat-archive-tool/src/test/DummyUI.hx b/projects/nat-archive-tool/src/test/DummyUI.hx
new file mode 100644
index 00000000..ccfa4f27
--- /dev/null
+++ b/projects/nat-archive-tool/src/test/DummyUI.hx
@@ -0,0 +1,40 @@
+package test;
+
+import nat.*;
+import nat.ArchiveController.ChangeSet;
+
+class DummyUI implements ArchiveUI {
+    var controller:ArchiveController = null;
+
+    public function new() {}
+
+    public function setController(controller:ArchiveController) {
+        this.controller = controller;
+    }
+
+    public function enterText(prompt:String, resolve:(String) -> Void, maxLength:Float) {
+        // TODO for proper testing, this will need to resolve with specific pre-coded strings
+        resolve("");
+    }
+
+    public function enterNumber(prompt:String, resolve:(Float) -> Void, min:Float, max:Float, ?inStepsOf:Float) {
+        // TODO for proper testing, this will need to resolve with specific pre-coded numbers
+        resolve(min);
+    }
+
+    public function chooseEntry(prompt:String, archive:Archive, resolve:(Entry) -> Void) {
+        // TODO for proper testing, this will need to resolve with specific pre-coded entries
+        resolve(null);
+    }
+
+    public function chooseEntries(prompt:String, archive:Archive, resolve:(Array<Entry>) -> Void, min:Int, max:Float) {
+        // TODO for proper testing, this will need to resolve with specific pre-coded entry lists
+        resolve([]);
+    }
+
+    public function handleChanges(archive:Archive, changeSet:ChangeSet) {}
+
+    public function displayMessage(message:String) {}
+
+    public function reportError(error:String) {}
+}
diff --git a/projects/nat-archive-tool/src/test/TestMain.kiss b/projects/nat-archive-tool/src/test/TestMain.kiss
index 9853f4ca..13e08b13 100644
--- a/projects/nat-archive-tool/src/test/TestMain.kiss
+++ b/projects/nat-archive-tool/src/test/TestMain.kiss
@@ -34,6 +34,6 @@
         ~(wikipedia.queryImageUrls (wikipedia.queryImageTitles ["Phoenix Wright"])))
 
     // TODO make a dummy UI for this, instead of passing null
-    (let [controller (new ArchiveController archive null)]
+    (let [controller (new ArchiveController archive (new DummyUI))]
         // TODO test controller
         0))