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Expects matchers for Doublex test doubles assertions

Project description

Latest version License Number of PyPI downloads https://secure.travis-ci.org/jaimegildesagredo/doublex-expects.svg?branch=master

Doublex-Expects is a matchers library for the Expects assertion library. It provides matchers for the Doublex test double library.

Installation

You can install the last stable release from PyPI using pip or easy_install.

$ pip install doublex-expects

Also you can install the latest sources from Github.

$ pip install -e git+git://github.com/jaimegildesagredo/doublex-expects.git#egg=doublex-expects

Usage

Just import the expect callable and the Doublex-Expects matchers and start writing assertions for test doubles.

from expects import expect
from doublex_expects import *
from doublex import Spy

my_spy = Spy()

expect(my_spy.method).to(have_been_called)

Matchers

have_been_called

Assert that a spy has been called.

expect(my_spy.method).to(have_been_called)
expect(my_spy.method).not_to(have_been_called)

have_been_called_with

Assert that a spy has been called with given arguments.

expect(my_spy.method).to(have_been_called_with('foo', key='bar'))
expect(my_spy.method).to(have_been_called_with(a(str), key=match('\w+')))
expect(my_spy.method).to(have_been_called_with(anything, key='bar'))
expect(my_spy.method).to(have_been_called_with('foo', any_arg))
expect(my_spy.method).not_to(have_been_called_with('bar', key='foo'))

Times called modifiers

once

Assert that a spy has been called exactly once.

expect(my_spy.method).to(have_been_called.once)
expect(my_spy.method).to(have_been_called_with('foo').once)
expect(my_spy.method).not_to(have_been_called.once)

twice

Assert that a spy has been called exactly twice.

expect(my_spy.method).to(have_been_called.twice)
expect(my_spy.method).to(have_been_called_with('foo').twice)
expect(my_spy.method).not_to(have_been_called.twice)

exactly

Assert that a spy has been called exactly n times.

expect(my_spy.method).to(have_been_called.exactly(3))
expect(my_spy.method).to(have_been_called_with('foo').exactly(3))
expect(my_spy.method).not_to(have_been_called.exactly(3))

max

Assert that a spy has been called maximum of n times.

expect(my_spy.method).to(have_been_called.max(2))
expect(my_spy.method).to(have_been_called_with('foo').max(2))
expect(my_spy.method).not_to(have_been_called.max(2))

min

Assert that a spy has been called minimum of n times.

expect(my_spy.method).to(have_been_called.min(2))
expect(my_spy.method).to(have_been_called_with('foo').min(2))
expect(my_spy.method).not_to(have_been_called.min(2))

Specs

To run the specs you should install the testing requirements and then run mamba.

$ python setup.py develop
$ pip install -r test-requirements.txt
$ mamba

Project details


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