test contents of root endpoint

tests/test_attributes.py

@@ -2,6 +2,16 @@
 from fastapi import status
 
 
+def test_root(test_app, set_valid_test_federation_nodes):
+    """Given a GET request to the root endpoint, Check for 200 status and expected content."""
+
+    response = test_app.get("/")
+
+    assert response.status_code == status.HTTP_200_OK
+    assert "Welcome to the Neurobagel REST API" in response.text
+    assert '<a href="/docs">documentation</a>' in response.text
+
+
 def test_partially_failed_terms_fetching_handled_gracefully(
     test_app, monkeypatch, set_valid_test_federation_nodes, caplog
 ):