Twisted Trial: Asynchronous unit testing framework.
Trial extends Python's builtin
unittest to provide support
for asynchronous tests.
Trial strives to be compatible with other Python xUnit testing frameworks. "Compatibility" is a difficult things to define. In practice, it means that:
twisted.trial.unittest.TestCaseobjects should be able to be used by other test runners without those runners requiring special support for Trial tests.
TestCaseand don't do anything "too weird" should be able to be discoverable and runnable by the Trial test runner without the authors of those tests having to jump through hoops.
TestCaseshould be runnable by the Trial runner.
unittest.TestCaseobjects ought to be able to use standard library
TestResultobjects, and third party
TestResultobjects based on the standard library.
This list is not necessarily exhaustive -- compatibility is hard to define. Contributors who discover more helpful ways of defining compatibility are encouraged to update this document.
Timeouts for tests should be implemented in the runner. If this
is done, then timeouts could work for third-party TestCase objects as well
objects. Further, Twisted
TestCase objects will run in other
runners without timing out. See http://twistedmatrix.com/trac/ticket/2675.
Running tests in a temporary directory should be a feature of the test case, because often tests themselves rely on this behaviour. If the feature is implemented in the runner, then tests will change behaviour (possibly breaking) when run in a different test runner. Further, many tests don't even care about the filesystem. See http://twistedmatrix.com/trac/ticket/2916.