Add test for load_grounding_map bug

Author: steppi

famplex/tests/test_load.py

@@ -0,0 +1,8 @@
+from famplex.load import load_grounding_map
+
+
+def test_load_grounding_map():
+    gm = load_grounding_map()
+    for text, db_refs in gm.items():
+        assert db_refs['TEXT'] == text
+        assert '' not in db_refs