[RED] Add test for age filter with range

apps/exportables/tests/test_units/test_exportables.py

@@ -208,7 +208,7 @@ class ExportableViewTest(APITestCase):
         self.assertEqual(len(body), 2)
 
     def test_export_investigation_data_to_csv_filter_age(self):
-        body = self.export_csv_test_util("?age=21")
+        body = self.export_csv_test_util("?min_age=21&max_age=21")
         self.assertEqual(len(body), 2)
 
     def test_export_investigation_data_to_csv_filter_district(self):