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Python wrapper & utils for the Mountebank over the wire test double tool.

Project description

mbtest

Opinionated Python wrapper & utils for the Mountebank over the wire test double tool.

Includes pytest fixture and PyHamcrest matchers.

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Setup

Install with pip:

pip install mbtest

(As usual, use of a venv or virtualenv is recommended.) Also requires Mountebank to have been installed:

npm install mountebank@2.2 --production

Basic example

import requests
from hamcrest import assert_that
from brunns.matchers.response import is_response
from mbtest.matchers import had_request
from mbtest.imposters import Imposter, Predicate, Response, Stub

def test_request_to_mock_server(mock_server):
    # Set up mock server with required behavior
    imposter = Imposter(Stub(Predicate(path="/test"), 
                             Response(body="sausages")))

    with mock_server(imposter) as server:
        # Make request to mock server - exercise code under test here
        response = requests.get("{}/test".format(imposter.url))

        assert_that("We got the expected response", 
                    response, is_response().with_status_code(200).and_body("sausages"))
        assert_that("The mock server recorded the request", 
                    server, had_request().with_path("/test").and_method("GET"))

Needs a pytest fixture, most easily defined in conftest.py:

import pytest
from mbtest import server

@pytest.fixture(scope="session")
def mock_server(request):
    return server.mock_server(request)

This will take care of starting and stopping the Mountebank server for you. Examples of more complex predicates can be found in the integration tests.

Developing

Requires make and tox. PyEnv may also come in handy so tests can be run against various Python versions. Run make precommit tells you if you're OK to commit. For more options, run:

make help

Releasing

Requires hub, setuptools and twine. To release version n.n.n:

version="n.n.n" # Needs to match new version number in setup.py.
git checkout -b "release-$version"
make precommit && git commit -am"Release $version" && git push # If not already all pushed, which it should be.
hub release create "V$version" -t"release-$version" -m"Version $version"
python setup.py sdist bdist_wheel
twine upload dist/*$version*

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