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# Copyright (C) 2010 Canonical Ltd
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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 2 of the License, or
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# (at your option) any later version.
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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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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Generate multiple variations in different scenarios.
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For a class whose tests should be repeated in varying scenarios, set a
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`scenarios` member to a list of scenarios where it should be repeated.
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This is similar to the interface provided by
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<http://launchpad.net/testscenarios/>.
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from bzrlib.tests import (
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def load_tests_apply_scenarios(standard_tests, module, loader):
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"""Multiply tests depending on their 'scenarios' attribute.
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This can be assigned to 'load_tests' in any test module to make this
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automatically work across tests in the module.
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result = loader.suiteClass()
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multiply_tests_by_their_scenarios(standard_tests, result)
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def multiply_tests_by_their_scenarios(some_tests, into_suite):
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"""Multiply the tests in the given suite by their declared scenarios.
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Each test must have a 'scenarios' attribute which is a list of
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:param some_tests: TestSuite or Test.
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:param into_suite: A TestSuite into which the resulting tests will be
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for test in iter_suite_tests(some_tests):
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scenarios = getattr(test, 'scenarios', None)
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into_suite.addTest(test)
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multiply_tests(test, test.scenarios, into_suite)