plone.mocktestcase 1.0b3

Introduction

This package contains a unittest test class based on the one from the Mocker mock library (http://labix.org/mocker).

This class provides support for registering Zope 3 components (utilities, adapters, subscription adapters and event handlers) from mocks and tearing down the global component registry during test tear-down.

There are also a few convenience methods and parameter checkers that are useful to Zope and Plone testing.

Please see the Mocker documentation for more detail:

http://labix.org/mocker

A test case that mocks a utility may look like this:

from plone.mocktestcase import MockTestCase

from my.package.interfaces import IMyInterface
from my.package.foo import testable_method

class MyTestCase(MockTestCase):

    def test_something(self):

        utility_mock = self.mocker.mock()
        self.expect(utility_mock.do_something()).result("foo")
        self.mock_utility(utility_mock, IMyInterface)

        # Put mocker into replay mode
        self.replay()

        # Verify that testable_method() looks up a utility for
        # IMyInterface and calls do_something() on it, which returns
        # "foo".

        testable_method()

The following helper methods are available:

self.replay()

Puts the mock into replay mode.

self.create_dummy(**kw)

Return a dummy object that is not a mock object, just a dumb object with whatever attributes or methods you pass as keyword arguments. To make a dummy method, pass a function object or a lambda, e.g. self.create_dummy(id=”foo”, absolute_url=lambda:’http://example.org/foo’)

self.mock_utility(mock, provides, name=u””)

Register the given mock object as a global utility providing the given interface, with the given name (defaults to the unnamed default utility).

self.mock_adapter(mock, provides, adapts, name=u””)

Register the given mock object as a global adapter providing the given interface and adapting the given interfaces, with the given name (defaults to the unnamed default adapter).

self.mock_subscription_adapter(mock, provides, adapts)

Register the given mock object as a global subscription adapter providing the given interface and adapting the given interfaces.

self.mock_handler(mock, adapts)

Register the given mock object as a global event subscriber for the given event types.

self.mock_tool(mock, name)

Create a getToolByName() mock (using ‘replace’ mode) and configure it so that code calling getToolByName(context, name) obtains the given mock object. Can be used multiple times: the getToolByName() mock is created lazily the first time this method is called in any one test fixture.

self.match_provides(interface)

A custom matcher that can be used to check whether an argument to a mock call provides the given interface. Uses interface.providedBy(arg).

self.match_type(type)

A custom matcher that can be used to check whether an argument to a mock call is if the given type. Uses isinstance(arg, type).

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