Python Testing by Arbuckle Daniel

Author:Arbuckle, Daniel [Daniel Arbuckle]
Language: eng
Format: epub
Publisher: Packt Publishing

Time for action – creating a module fixture

We'll build a test module with a module-level fixture. In the fixture, we'll replace the datetime.date.today function, which normally returns an object representing the current date. We want it to return a specific value, so that our tests can know what to expect.

Create a directory called tests. We'll use this directory in this Time for action, as well as in the next one.

Within the tests directory, create a file called module_fixture_tests.py containing the following code:from unittest import TestCase from mocker import Mocker from datetime import date mocker = Mocker() def setup(): fake_date = mocker.replace(date) fake_date.today() mocker.result(date(year = 2009, month = 6, day = 12)) mocker.count(1, None) mocker.replay() def teardown(): mocker.restore() mocker.verify() class first_tests(TestCase): def test_year(self): self.assertEqual(date.today().year, 2009) def test_month(self): self.assertEqual(date.today().month, 6) def test_day(self): self.assertEqual(date.today().day, 12) class second_tests(TestCase): def test_isoformat(self): self.assertEqual(date.today().isoformat(), '2009-06-12')

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