pytest-cloud 1.2.4

Distributed tests planner plugin for pytest testing framework.

Distributed tests planner plugin for pytest testing framework

Install pytest-cloud

pip install pytest-cloud

Features

The plugin provides an easy way of running tests amoung several test nodes (slaves). Uses the great pytest-xdist plugin for actual distributed run. When used, it will automatically detect capabilites of given node(s) and run only the number of test processes it is able to handle. If will also filter out offline nodes or nodes which were failed to respond to the capabilities aquisition call.

Supports automatic virtualenv activation on the test node so you don’t have to install python dependencies for your project on remote test nodes globally - just make sure that your virtualenv folder is inside your project folder - that’s a requirement, and then pass it’s relative path as a parameter (see below).

ATM only ssh transport is supported. So ensure that you have at least public key auth enabled to your test nodes from the master node (where py.test is executed).

Command-line options

• –cloud-node

  Node hostname (or user@hostname) to run tests on. Multiple allowed.

• –cloud-nodes

  Space-separated list of node hostname (or user@hostname) to run tests on. Multiple allowed.

• –cloud-python

  Optional python executable name to be used on the remote test nodes. Default is the executable name used for the test run on the master.

• –cloud-chdir

  Optional relative path to be used on the remote test nodes as target folder for syncing file and run tests. Default is pytest_<username>_<current_folder_name>.

• –cloud-virtualenv-path

  Optional relative path to the virtualenv to be used on the remote test nodes. By default it will try to detect whether current test process is using virtualenv and if it’s located inside of the current directory. If that’s the case, it will use it for rsync on the remote node(s).

• –cloud-mem-per-process

  Optional amount of memory roughly needed for test process, in megabytes. Will be used to calculate amount of test processes per node, getting the free memory, dividing it for the memory per process needed, and getting the minimum of that value and the number of CPU cores of the test node.

• –cloud-max-processes

  Optional maximum number of processes per test node. Overrides from above the calculated number of processes using memory and number of CPU cores.

Example

py.test tests/ --cloud-node=10.0.120.{1..40} --cloud-mem-per-process=1000 --rsyncdir=.

Or if you pass list of nodes as space-separated list:

py.test tests/ --cloud-nodes='10.0.120.1 10.0.120.2' --cloud-mem-per-process=1000 --rsyncdir=.

Contact

If you have questions, bug reports, suggestions, etc. please create an issue on the GitHub project page.

License

This software is licensed under the MIT license

See License file

© 2015 Anatoly Bubenkov and others.

Authors

Anatoly Bubenkov

original idea and implementation

Changelog

1.2.4

• Fast native rsync instead of python based one (bubenkoff)

1.1.0

• Avoid unnecessary multiple ssh connections to the same node (bubenkoff)

1.0.25

• Correct virtualenv execution (bubenkoff)

1.0.18

• Ensure plugin command line hook is executed first (bubenkoff)

• Correct free memory calculation (bubenkoff)

1.0.15

• Add pyc files cleanup (bubenkoff)

1.0.13

• Automatic discovery of the virtualenv (bubenkoff)

• Fixes to rsyncing (bubenkoff)

• Safer node id generation (bubenkoff)

• Guarantee uniqueness of provided nodes (bubenkoff)

1.0.10

• Delete orphan files when rsyncing (bubenkoff)

1.0.7

• Add possibility to pass node list as space separated (bubenkoff)

1.0.6

• Initial public release