diff --git a/tests/test_functions.py b/tests/test_functions.py
index 219218a..b46d0db 100644
--- a/tests/test_functions.py
+++ b/tests/test_functions.py
@@ -133,9 +133,19 @@ class FunctionsTestCase(IsolatedAsyncioTestCase):
             function = functions.get_cash_flow_statement
         else:
             raise ValueError
-        output = await function(symbol, quarterly, mock_session)
+        output = await function(symbol, quarterly=quarterly, session=mock_session)
         self.assertEqual(expected_output, output)
         mock__get_financial_statement.assert_called_once_with(statement, symbol, quarterly, mock_session)
+        mock__get_financial_statement.reset_mock()
+
+        symbol1, symbol2 = 'x', 'y'
+        expected_output = {symbol1: expected_output, symbol2: expected_output}
+        output = await function(symbol1, symbol2, quarterly=quarterly, session=mock_session)
+        self.assertDictEqual(expected_output, output)
+        mock__get_financial_statement.assert_has_calls([
+            call(statement, symbol1, quarterly, mock_session),
+            call(statement, symbol2, quarterly, mock_session),
+        ])
 
     @patch.object(functions, '_get_financial_statement')
     async def test_get_balance_sheet(self, mock__get_financial_statement):