doublex 1.8.1

Python test doubles

Powerful test doubles framework for Python.

design principles

• doubles should not have public API framework methods. It avoids silent misspelling.

• doubles do not require collaborator instances, just classes, and it never instantiate them.

• assert_that() is used for ALL assertions.

• invocation order for mocks is relevant by default.

• supports old and new style classes.

a trivial example

import unittest
from doublex import Spy, assert_that, called

class SpyUseExample(unittest.TestCase):
    def test_spy_example(self):
        # given
        spy = Spy(SomeCollaboratorClass)
        cut = YourClassUnderTest(spy)

        # when
        cut.a_method_that_call_the_collaborator()

        # then
        assert_that(spy.some_method, called())

See more about doublex doubles.

relevant links

• install

• documentation

• release notes

• slides

• sources

• PyPI project

• pyDoubles

• crate

• buildbot job

• other doubles

Debian

• official package (may be outdated)

• amateur repository: deb http://babel.esi.uclm.es/arco/ sid main (always updated)

• official ubuntu package

• debian dir: svn://svn.debian.org/svn/python-modules/packages/doublex/trunk