pytest-stub 1.0.0

Stub packages, modules and attributes.

https://github.com/idlesign/pytest-stub

Description

Stub packages, modules and attributes.

This pytest plugin allows you to replace dependencies with stubs.

It can be useful if you want to test some code using a dependency without actually having this dependency, for example if you’re testing your library, which uses some parts of another library.

Requirements

• Python 3.6+
• pytest >= 2.9.0

How to use

Use stub fixture in your test functions, like this:

def test_django_related(stub):

    stub.apply({
        # Replace `call_command` with a generated function.
        'django.core.management.call_command': '[func]',

        # Replace `BaseCommand` with a generated class.
        'django.core.management.base.BaseCommand': '[cls]',

        # Replace `dummy` with generated MagicMock.
        'django.dummy': '[mock]',

        # Replace entire `cv2` module.
        'cv2': '[mock]',

        # Stub multiple attributes in the same module with custom objects.
        'django.conf': {
            'settings': object(),
            'some': True,
        },

    })

You can stub dependencies either with your own custom objects or you may instruct pytest-stub to generate functions or classes for you.