Declarative HTTP Testing for Python and anything else
.. image:: https://github.com/cdent/gabbi/workflows/tests/badge.svg :target: https://github.com/cdent/gabbi/actions .. image:: https://readthedocs.org/projects/gabbi/badge/?version=latest :target: https://gabbi.readthedocs.io/en/latest/ :alt: Documentation Status
Gabbi is a tool for running HTTP tests where requests and responses are represented in a declarative YAML-based form. The simplest test looks like this::
tests: - name: A test GET: /api/resources/id
See the docs_ for more details on the many features and formats for setting request headers and bodies and evaluating responses.
Gabbi is tested with Python 3.6, 3.7, 3.8, 3.9 and pypy3.
Tests can be run using
unittest_ style test runners,
pytest_ or from the command line with a
There is a
gabbi-demo_ repository which provides a tutorial via its commit history. The demo builds a simple API using gabbi to facilitate test driven development.
.. _Release Notes: https://gabbi.readthedocs.io/en/latest/release.html .. _docs: https://gabbi.readthedocs.io/ .. _gabbi-demo: https://github.com/cdent/gabbi-demo .. _unittest: https://gabbi.readthedocs.io/en/latest/example.html#loader .. _pytest: http://pytest.org/ .. _loader docs: https://gabbi.readthedocs.io/en/latest/example.html#pytest .. _gabbi-run: https://gabbi.readthedocs.io/en/latest/runner.html
Gabbi works to bridge the gap between human readable YAML files that represent HTTP requests and expected responses and the obscured realm of Python-based, object-oriented unit tests in the style of the unittest module and its derivatives.
Each YAML file represents an ordered list of HTTP requests along with the expected responses. This allows a single file to represent a process in the API being tested. For example:
At the same time it is still possible to ask gabbi to run just one request. If it is in a sequence of tests, those tests prior to it in the YAML file will be run (in order). In any single process any test will only be run once. Concurrency is handled such that one file runs in one process.
These features mean that it is possible to create tests that are useful for both humans (as tools for improving and developing APIs) and automated CI systems.
To get started, after cloning the
repository_, you should install the development dependencies::
$ pip install -r requirements-dev.txt
If you prefer to keep things isolated you can create a virtual environment::
$ virtualenv gabbi-venv $ . gabbi-venv/bin/activate $ pip install -r requirements-dev.txt
Gabbi is set up to be developed and tested using
tox_ (installed via
requirements-dev.txt). To run the built-in tests (the YAML files are in the directories
gabbi/tests/gabbits_*and loaded by the file
gabbi/test_*.py), you call
If you have the dependencies installed (or a warmed up virtualenv) you can run the tests by hand and exit on the first failure::
python -m subunit.run discover -f gabbi | subunit2pyunit
Testing can be limited to individual modules by specifying them after the tox invocation::
tox -epep8,py37 -- test_driver test_handlers
If you wish to avoid running tests that connect to internet hosts, set
.. _tox: https://tox.readthedocs.io/ .. _repository: https://github.com/cdent/gabbi