Running unit tests

Test core changes

You can run unit tests for the core functionality using:

Python code 

python butler.py py_unittest -t core

Optional switches you can use:

  • -m: Execute tests in-parallel (recommended).
  • -v: Run tests in verbose mode (with INFO log level).
  • -u: Show output from print (useful for debugging).
  • -p <test_name/test_prefix_with_wildcards>: Execute a particular test or set of tests matching a particular prefix. E.g. -p libfuzzer_* will execute all libFuzzer tests.

Test App Engine changes

Most of the App Engine code is written in Python. You can run unit tests for the App Engine changes (e.g. UI, cron) using:

python butler.py py_unittest -t appengine

You can use any switch as defined above in the python core changes section.