diff --git a/graphs/tests/test_connected_components.py b/graphs/tests/test_connected_components.py
new file mode 100644
index 000000000000..1f61ff7a0577
--- /dev/null
+++ b/graphs/tests/test_connected_components.py
@@ -0,0 +1,5 @@
+from graphs.connected_components import connected_components
+
+
+def test_connected_components_empty_graph():
+    assert connected_components({}) == []