Test runner for command line projects (based on Click's CliRunner)

• clirunner

  1 5 8.0 Python

  A python test helper for invoking and testing command line interfaces (CLIs) based on Click's CliRunner

I love Click for building Python command line interfaces (CLI). One useful feature Click provides is a CliRunner() helper class for testing. CliRunner invokes the script in an isolated environment allowing you to pass arguments, etc. Occasionally I work on projects that don't use Click. For example, if I want to provide a python3 -m packagename script that is ancillary to the primary use case and don't want to include Click as a dependency or want something that can be distributes as a stand-alone script without dependencies. In this case I'd usually use argparse. However, CLIs built with argparse (or old-fashioned manual sys.argv parsing) aren't nearly as easy to test. Thus I created clirunner which is a port of Click's test helper to work with non-Click apps. The API is compatible with Click's CliRunner so if you ever move a project to use Click, the tests should need little to no modification.

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