[Django]-Fake subfunction in django UnitTest Case (Mocking)

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You should use mock.patch and specify the return_value. Here’s an example where we are patching the return value of func_b() to Fake value on the fly:

from mock import patch
import unittest


def func_b():
    return "Real value"


def func_a():
    return "The result of func_b is '%s'" % func_b()


class MyTestCase(unittest.TestCase):
    def test_fake_value(self):
        with patch('test.func_b', return_value="Fake value") as mock_function:
            self.assertEqual(func_a(), "The result of func_b is 'Fake value'")

UPD:

with patch.object(module_name, 'func_b') as mock_function:
    mock_function.return_value = "Fake value"
    self.assertEqual(func_a(), "The result of func_b is 'Fake value'")
👤alecxe

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