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# Copyright (C) 2010 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Generate multiple variations in different scenarios.
For a class whose tests should be repeated in varying scenarios, set a
`scenarios` member to a list of scenarios where it should be repeated.
This is similar to the interface provided by
<http://launchpad.net/testscenarios/>.
"""
from bzrlib.tests import (
iter_suite_tests,
multiply_scenarios,
multiply_tests,
)
def load_tests_apply_scenarios(standard_tests, module, loader):
"""Multiply tests depending on their 'scenarios' attribute.
This can be assigned to 'load_tests' in any test module to make this
automatically work across tests in the module.
"""
result = loader.suiteClass()
multiply_tests_by_their_scenarios(standard_tests, result)
return result
def multiply_tests_by_their_scenarios(some_tests, into_suite):
"""Multiply the tests in the given suite by their declared scenarios.
Each test must have a 'scenarios' attribute which is a list of
(name, params) pairs.
:param some_tests: TestSuite or Test.
:param into_suite: A TestSuite into which the resulting tests will be
inserted.
"""
for test in iter_suite_tests(some_tests):
scenarios = getattr(test, 'scenarios', None)
if scenarios is None:
into_suite.addTest(test)
else:
multiply_tests(test, test.scenarios, into_suite)
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