Fixed Engine Flask Server Accessibility

Data/Engine/Unit_Tests/test_web_ui.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+
+def test_web_ui_root_serves_index(engine_harness):
+    client = engine_harness.app.test_client()
+    response = client.get("/")
+    assert response.status_code == 200
+    body = response.get_data(as_text=True)
+    assert "Engine Test UI" in body
+
+
+def test_web_ui_serves_static_assets(engine_harness):
+    client = engine_harness.app.test_client()
+    response = client.get("/assets/example.txt")
+    assert response.status_code == 200
+    assert response.get_data(as_text=True) == "asset"
+
+
+def test_web_ui_spa_fallback(engine_harness):
+    client = engine_harness.app.test_client()
+    response = client.get("/devices")
+    assert response.status_code == 200
+    assert "Engine Test UI" in response.get_data(as_text=True)