New submission from Patrick Smith <pjs...@gmail.com>:
The attached patch adds two helper methods to `unittest.TestCase`:
`assertIsSubclass` and `assertIsNotSubclass`. These methods are similar to the
`assertIsInstance` and `assertIsNotInstance` methods that are already part of
`unittest.TestCase`. They allow one to test if a class is a subclass of another
class using the `issubclass` builtin.
These methods can be used like:
self.assertIsSubclass(cls, parent_cls)
These new methods provide a nicer error message and more consistent interface
over the alternatives:
self.assertTrue(issubclass(cls, parent_cls))
assert issubclass(cls, parent_cls)
----------
components: Library (Lib)
files: assertissubclass.patch
keywords: patch
messages: 160762
nosy: patricksmith
priority: normal
severity: normal
status: open
title: Add `assertIsSubclass` and `assertNotIsSubclass` to `unittest.TestCase`
type: enhancement
Added file: http://bugs.python.org/file25600/assertissubclass.patch
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue14819>
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