2013-05-23 07:59:09 -05:00
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# Authors:
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# Petr Viktorin <pviktori@redhat.com>
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#
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# Copyright (C) 2013 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""A Nose plugin that allows ordered test cases"""
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import os
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import unittest
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import inspect
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from nose.plugins import Plugin
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import nose.loader
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2013-09-24 06:46:09 -05:00
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import nose.util
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2013-05-23 07:59:09 -05:00
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def ordered(cls):
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2013-09-24 06:46:09 -05:00
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"""Decorator that marks a test class as ordered
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Methods within the marked class will be executed in definition order
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(or more strictly, in ordered by the line number where they're defined).
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Subclasses of unittest.TestCase can not be ordered.
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Generator methods will not be ordered by this plugin.
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"""
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cls._order_plugin__ordered = True
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assert not isinstance(cls, unittest.TestCase), (
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"A unittest.TestCase may not be ordered.")
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return cls
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class OrderTests(Plugin):
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name = 'ordered-tests'
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def options(self, parser, env=os.environ):
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super(OrderTests, self).options(parser, env=env)
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def configure(self, options, conf):
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super(OrderTests, self).configure(options, conf)
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if not self.enabled:
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return
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def loadTestsFromTestClass(self, cls):
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"""Sort methods of ordered test cases by co_firstlineno"""
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if not getattr(cls, '_order_plugin__ordered', False):
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return
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loader = nose.loader.TestLoader()
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def wanted(attr):
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item = getattr(cls, attr, None)
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if not inspect.ismethod(item):
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return False
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if nose.util.isgenerator(item.im_func):
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return False
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return loader.selector.wantMethod(item)
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methods = [getattr(cls, case) for case in dir(cls) if wanted(case)]
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methods.sort(key=lambda m: m.func_code.co_firstlineno)
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cases = [loader.makeTest(m, cls) for m in methods]
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return cases
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def wantMethod(self, method):
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"""Hide non-TestCase methods from the normal loader"""
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im_class = getattr(method, 'im_class', None)
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if im_class and getattr(im_class, '_order_plugin__ordered', False):
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if nose.util.isgenerator(method.im_func):
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return True
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return False
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