PyMuTester is tool to facilitate Mutant Testing (a.k.a Mutant Analysis or Program Mutation) on software systems written in Python. Its main purpose is to assist you in improving your existing unit tests to cover missing checks and “loopholes” in your testing. It works by making small changes (technically known as mutants) to your Python application’s source code and re-running your unit tests over these mutated applications' source code. Since the mutants usually go against the specifications, your unit tests should fail in such tests. If the unit tests still pass, then that is an indication that your unit tests might have missed some checks.
PyreRing is a test runner that executes scripts intended to act as individual test cases. By removing the administrative burden that often surrounds testing, the test author can focus on writing meaningful, direct, and useful test cases. As long as you wrap your test cases with a Unix shell or scripted language wrapper, it will be executed. It allows you to set a timeout value, send reports to email addresses, automatically organize your test cases with filesystem directories or suite files that you define, create automatic suites based on a predefined block in your test scripts, and capture standard out and standard error into a comprehensive log.