I would like to unittest a fuction and assert if the sequence of function calls made inside the function workflow(). Something like,

      [1st called] fetch_yeargroup_ls()[2nd called] invoke_get_links()....... 

I searched across many discussions but never found one answering my question.

If you are using mock you can create mocks as attributes of a parent mock, when patching out those functions:

try:# Python 3from unittest.mock import MagicMock, patch, call
except ImportError:# Python 2, install from PyPI firstfrom mock import MagicMock, patch, call
import unittestfrom module_under_test import function_under_testclass TestCallOrder(unittest.TestCase):def test_call_order(self):source_mock = MagicMock()with patch('module_under_test.function1', source_mock.function1), \patch('module_under_test.function2', source_mock.function2), \patch('module_under_test.function3', source_mock.function3)# the test is successful if the 3 functions are called in this# specific order with these specific arguments:expected = [call.function1('foo'),call.function2('bar'),call.function3('baz')]# run your code-under-testfunction_under_test()self.assertEqual(source_mock.mock_calls, expected)

Because the 3 functions are attached to source_mock, all calls to them are recorded on the parent mock object in the Mock.mock_calls attribute and you can make assertions about their call order.

I attached the 3 function mocks simply by looking them up as attributes on the source_mock object, but you could also use the Mock.attach_mock() method to attach mocks you created in a different way to a parent.