Create tests/unit/test_unit.py

tests/unit/test_unit.py

@@ -0,0 +1,6 @@
+import pytest
+from app import postproccess
+
+def test_postprocess():
+    assert postproccess([]) == ''
+    assert postproccess([{"entity_group": '1'}, {"entity_group": '2'}]) == "1 2"