Metadata-Version: 2.1
Name: tox-factor
Version: 0.0.2
Summary: Run tox testenvs that match a given factor
Home-page: https://github.com/rpkilby/tox-factor
Author: Ryan P Kilby
Author-email: kilbyr@gmail.com
License: BSD 3-Clause License
Project-URL: Source, https://github.com/rpkilby/tox-factor
Project-URL: Tracker, https://github.com/rpkilby/tox-factor/issues
Platform: UNKNOWN
Classifier: Development Status :: 3 - Alpha
Classifier: Framework :: tox
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: POSIX
Classifier: Operating System :: Microsoft :: Windows
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Topic :: Software Development :: Testing
Description-Content-Type: text/markdown
Requires-Dist: tox

# tox-factor

[![CircleCI](https://circleci.com/gh/rpkilby/tox-factor.svg?style=shield)](https://circleci.com/gh/rpkilby/tox-factor)
[![codecov](https://codecov.io/gh/rpkilby/tox-factor/branch/master/graph/badge.svg)](https://codecov.io/gh/rpkilby/tox-factor)
[![version](https://img.shields.io/pypi/v/tox-factor.svg)](https://pypi.python.org/pypi/tox-factor)
[![python](https://img.shields.io/pypi/pyversions/tox-factor.svg)](https://pypi.org/project/tox-factor/)
[![license](https://img.shields.io/pypi/l/tox-factor.svg)](https://pypi.python.org/pypi/tox-factor)

## What is tox-factor?

tox-factor enables running a subset of tox test envs, based on factor matching.


## Okay, but what does that *actually* mean?

Take the following tox config:

```ini
[tox]
envlist =
    py{35,36,37}-django{20,21,22}-{redis,memcached}
```

The above defines 18 test envs, based on three factor groups - the python
version, the django version, and a caching backend. While the above is powerful,
tox does not provide a way to run builds based on a subset of those factors.
For example, the call to run all Python 3.7 builds would be:

```shell
$ tox -e py37-django20-redis,py37-django20-memcached,py37-django21-redis,py37-django21-memcached,py37-django22-redis,py37-django22-memcached
```

tox-factor functions similarly to the `-e <env name>` argument, except it runs
all envs that match the given factor. The six `py37` builds could be ran with:

```shell
$ tox -f py37
```

In addition to ease of use when running tox locally, this is useful for some CI
setups. For example, two common tox CI patterns are to either:

- Define a CI job for each tox test env. e.g.,

    `tox -e py37-django20-redis`

- Define a CI job for a common environment that runs multiple test envs. e.g.,

    `tox -e py37-django20-redis,py37-django20-memcached,...`

For the latter case, this plugin eases maintenance of CI, as it could be
shortened to `tox -f py37`. Additionally, take the following update to the above
tox config:

```ini
[tox]
envlist =
    py{35,36,37}-django{20,21,22}-{redis,memcached}
    py{36,37,38}-django{30}-{redis,memcached}
```

By using tox-factor, it wouldn't be necessary to update the Python 3.7 build, as
the new `py37-django30-*` env would be matched automatically.



## Verifying the matched test envs

If you want to verify which test envs are actually ran, combine the factor
matching with the `-l` flag. This will display all test envs that match. e.g.,

```shell
$ tox -f py37 -l
py37-django20-redis
py37-django20-memcached
py37-django21-redis
py37-django21-memcached
py37-django22-redis
py37-django22-memcached
```


## Usage details

The factor option accepts a comma-separated list (similar to the `-e` option).
```shell
$ tox -f py27,py37 -l
py27-django111
py37-django21
```

Alternatively, factors can be provided via the `TOXFACTOR` environment variable:
```shell
$ TOXFACTOR=py27,py37 tox -l
py27-django111
py37-django21
```

Factors can also match non-generative env names. For example, given the
following tox config:

```ini
[tox]
envlist =
    py{35,36,37}-django20

[testenv:list]
```

Then the following would match:

```shell
$ tox -f py37,lint -l
py37-django20
lint
```

Factors are always superseded by a given `toxenv`. For example, tox-factor would
noop in the following cases:

```shell
$ tox -f py37 -e py35-django21 -l
py35-django21

$ TOXENV=py35-django21 tox -f py37 -l
py35-django21
```

Factors do not support partial matching. `tox -f py3` would not match `py37`.
However, factors may match disparate dash-separated parts. Given the following:
```ini
[tox]
envlist =
    py{35,36,37}-django{20,21,22}-{redis,memcached}
```

Then `tox -f py37-redis` would match:
```
py37-django20-redis
py37-django21-redis
py37-django22-redis
```


## Release Process

- Update changelog
- Update package version in setup.py
- Create git tag for version
- Upload release to PyPI test server
- Upload release to official PyPI server

```shell
$ pip install -U pip setuptools wheel twine
$ rm -rf dist/ build/
$ python setup.py sdist bdist_wheel
$ twine upload -r test dist/*
$ twine upload dist/*
```


## Thanks

This code is largely based off the work done by @ryanhiebert in [tox-travis][1].
Without his efforts, it would have taken significantly more time to write and
test this package.

## License

See: [LICENSE][2]

[1]: https://github.com/tox-dev/tox-travis
[2]: https://github.com/rpkilby/tox-factor/blob/master/LICENSE

BSD 3-Clause License

Copyright (c) 2019, Ryan P Kilby
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

* Neither the name of the copyright holder nor the names of its
  contributors may be used to endorse or promote products derived from
  this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


