Unittesting ROS in python

Setting up unit tests for ROS python modules is a little tricky, but once it’s in place you can easily automate testing of ros nodes.

Here is a very brief reference.


import must look like:

from <package>.module.module.file import Blah

The package and all modules must have an __init__.py file

main code

In __main__, use:

rostest.rosrun('package_name', 'test_name', TestCase)

Note this will also run with nosetests, but you can only run it directly using:

rosrun <package> test_foo.py.

Calling python test_foo.py directly will fail.

Executable flag

Flag must be off for test files (otherwise nosetests will ignore it).