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#
# testresources: extensions to python unittest to allow declaritive use
# of resources by test cases.
# Copyright (C) 2005 Robert Collins <robertc@robertcollins.net>
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import testtools
import testresources
from testresources.tests import ResultWithResourceExtensions
def test_suite():
loader = testresources.tests.TestUtil.TestLoader()
result = loader.loadTestsFromName(__name__)
return result
class MockResource(testresources.TestResource):
"""Resource used for testing ResourcedTestCase."""
def __init__(self, resource):
testresources.TestResource.__init__(self)
self._resource = resource
def make(self, dependency_resources):
return self._resource
class MockResourceInstance(object):
"""A resource instance."""
class TestResourcedTestCase(testtools.TestCase):
def setUp(self):
testtools.TestCase.setUp(self)
class Example(testresources.ResourcedTestCase):
def test_example(self):
pass
self.resourced_case = Example('test_example')
self.resource = self.getUniqueString()
self.resource_manager = MockResource(self.resource)
def testDefaults(self):
self.assertEqual(self.resourced_case.resources, [])
def testResultPassedToResources(self):
result = ResultWithResourceExtensions()
self.resourced_case.resources = [("foo", self.resource_manager)]
self.resourced_case.run(result)
self.assertEqual(4, len(result._calls))
def testSetUpResourcesSingle(self):
# setUpResources installs the resources listed in ResourcedTestCase.
self.resourced_case.resources = [("foo", self.resource_manager)]
testresources.setUpResources(self.resourced_case,
self.resourced_case.resources, None)
self.assertEqual(self.resource, self.resourced_case.foo)
def testSetUpResourcesMultiple(self):
# setUpResources installs the resources listed in ResourcedTestCase.
self.resourced_case.resources = [
('foo', self.resource_manager),
('bar', MockResource('bar_resource'))]
testresources.setUpResources(self.resourced_case,
self.resourced_case.resources, None)
self.assertEqual(self.resource, self.resourced_case.foo)
self.assertEqual('bar_resource', self.resourced_case.bar)
def testSetUpResourcesSetsUpDependences(self):
resource = MockResourceInstance()
self.resource_manager = MockResource(resource)
self.resourced_case.resources = [('foo', self.resource_manager)]
# Give the 'foo' resource access to a 'bar' resource
self.resource_manager.resources.append(
('bar', MockResource('bar_resource')))
testresources.setUpResources(self.resourced_case,
self.resourced_case.resources, None)
self.assertEqual(resource, self.resourced_case.foo)
self.assertEqual('bar_resource', self.resourced_case.foo.bar)
def testSetUpUsesResource(self):
# setUpResources records a use of each declared resource.
self.resourced_case.resources = [("foo", self.resource_manager)]
testresources.setUpResources(self.resourced_case,
self.resourced_case.resources, None)
self.assertEqual(self.resource_manager._uses, 1)
def testTearDownResourcesDeletesResourceAttributes(self):
self.resourced_case.resources = [("foo", self.resource_manager)]
self.resourced_case.setUpResources()
self.resourced_case.tearDownResources()
self.failIf(hasattr(self.resourced_case, "foo"))
def testTearDownResourcesStopsUsingResource(self):
# tearDownResources records that there is one less use of each
# declared resource.
self.resourced_case.resources = [("foo", self.resource_manager)]
self.resourced_case.setUpResources()
self.resourced_case.tearDownResources()
self.assertEqual(self.resource_manager._uses, 0)
def testTearDownResourcesStopsUsingDependencies(self):
resource = MockResourceInstance()
dep1 = MockResource('bar_resource')
self.resource_manager = MockResource(resource)
self.resourced_case.resources = [('foo', self.resource_manager)]
# Give the 'foo' resource access to a 'bar' resource
self.resource_manager.resources.append(
('bar', dep1))
self.resourced_case.setUpResources()
self.resourced_case.tearDownResources()
self.assertEqual(dep1._uses, 0)
def testSingleWithSetup(self):
# setUp and tearDown invoke setUpResources and tearDownResources.
self.resourced_case.resources = [("foo", self.resource_manager)]
self.resourced_case.setUp()
self.assertEqual(self.resourced_case.foo, self.resource)
self.assertEqual(self.resource_manager._uses, 1)
self.resourced_case.tearDown()
self.failIf(hasattr(self.resourced_case, "foo"))
self.assertEqual(self.resource_manager._uses, 0)
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