Django tests – patch object in all tests

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According to the mock documentation:

Patch can be used as a TestCase class decorator. It works by
decorating each test method in the class. This reduces the boilerplate
code when your test methods share a common patchings set.

This basically means that you can create a base test class with @patch decorator applied on it that would mock your external calls while every test method inside would be executed.

Also, you can use start() and stop() patcher’s methods in setUp() and tearDown() methods respectively:

class BaseTestCase(TestCase):
    def setUp(self):
        self.patcher = patch('mymodule.foo')
        self.mock_foo = self.patcher.start()

    def tearDown(self):
        self.patcher.stop()

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