diff --git a/cognee/tests/infrastructure/databases/test_index_graph_edges.py b/cognee/tests/infrastructure/databases/test_index_graph_edges.py
new file mode 100644
index 000000000..e4c1dac05
--- /dev/null
+++ b/cognee/tests/infrastructure/databases/test_index_graph_edges.py
@@ -0,0 +1,56 @@
+import pytest
+from unittest.mock import AsyncMock, patch
+
+@pytest.mark.asyncio
+async def test_index_graph_edges_success():
+    """Test that index_graph_edges uses the index datapoints and creates vector index."""
+    mock_graph_engine = AsyncMock()
+    mock_graph_engine.get_graph_data.return_value = (None, [
+        [{"relationship_name": "rel1"}, {"relationship_name": "rel1"}],
+        [{"relationship_name": "rel2"}]
+    ])
+
+    mock_vector_engine = AsyncMock()
+
+    with patch("cognee.tasks.storage.index_graph_edges.get_graph_engine", return_value=mock_graph_engine), \
+         patch("cognee.tasks.storage.index_graph_edges.get_vector_engine", return_value=mock_vector_engine):
+
+        from cognee.tasks.storage.index_graph_edges import index_graph_edges
+        await index_graph_edges()
+
+        mock_graph_engine.get_graph_data.assert_awaited_once()
+        assert mock_vector_engine.create_vector_index.await_count == 1
+        assert mock_vector_engine.index_data_points.await_count == 1
+
+
+@pytest.mark.asyncio
+async def test_index_graph_edges_no_relationships():
+    """Test that index_graph_edges handles empty relationships correctly."""
+    mock_graph_engine = AsyncMock()
+    mock_graph_engine.get_graph_data.return_value = (None, [])
+
+    mock_vector_engine = AsyncMock()
+
+    with patch("cognee.tasks.storage.index_graph_edges.get_graph_engine", return_value=mock_graph_engine), \
+         patch("cognee.tasks.storage.index_graph_edges.get_vector_engine", return_value=mock_vector_engine):
+
+        from cognee.tasks.storage.index_graph_edges import index_graph_edges
+        await index_graph_edges()
+
+        mock_graph_engine.get_graph_data.assert_awaited_once()
+        mock_vector_engine.create_vector_index.assert_not_awaited()
+        mock_vector_engine.index_data_points.assert_not_awaited()
+
+
+@pytest.mark.asyncio
+async def test_index_graph_edges_initialization_error():
+    """Test that index_graph_edges raises a RuntimeError if initialization fails."""
+    with patch("cognee.tasks.storage.index_graph_edges.get_graph_engine", side_effect=Exception("Graph engine failed")), \
+         patch("cognee.tasks.storage.index_graph_edges.get_vector_engine", return_value=AsyncMock()):
+
+        from cognee.tasks.storage.index_graph_edges import index_graph_edges
+
+        with pytest.raises(RuntimeError, match="Initialization error"):
+            await index_graph_edges()
+
+