Why is this an issue?
Classes subclassing only
unittest.TestCase are considered test cases, otherwise they might be mixins.
As classes subclassing
unittest.TestCase will be executed as tests, they should define test methods and not be used as "abstract"
parent helper. Methods within the class will be discovered by the test runner if their name starts with
test. If a method intended to be
a test does not respect this convention, it will not be executed.
This rule raises an issue when a method is not discoverable as a test and is never used within its test case class.
This rule will not raise if:
- The method is called directly from another method.
- The method overrides an existing one in
unittest.TestCase (example: a
Noncompliant code example
def setUp(self): ... # OK (unittest.TestCase method)
def something_test(self): ... # Noncompliant
def setUp(self): ...
def test_something(self): ...