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# Copyright 2009 Canonical Ltd. This software is licensed under the
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# GNU Affero General Public License version 3 (see the file LICENSE).
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from storm.zope.interfaces import IZStorm
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from zope.component import getUtility
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from canonical.database.sqlbase import (
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ZopelessTransactionManager,
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from canonical.testing.layers import (
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LaunchpadZopelessLayer,
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ZopelessDatabaseLayer,
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from canonical.database.sqlbase import ZopelessTransactionManager
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from canonical.testing.layers import LaunchpadZopelessLayer
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from lp.testing import TestCase
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new_active_stores = [
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item[0] for item in getUtility(IZStorm).iterstores()]
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self.assertContentEqual(active_stores, new_active_stores)
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class TestInitZopeless(TestCase):
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layer = ZopelessDatabaseLayer
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def test_initZopelessTwice(self):
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# Hook the warnings module, so we can verify that we get the expected
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# warning. The warnings module has two key functions, warn and
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# warn_explicit, the first calling the second. You might, therefore,
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# think that we should hook the second, to catch all warnings in one
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# place. However, from Python 2.6, both of these are replaced with
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# entries into a C extension if available, and the C implementation of
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# the first will not call a monkeypatched Python implementation of the
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# second. Therefore, we hook warn, as is the one actually called by
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# the particular code we are interested in testing.
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original_warn = warnings.warn
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warnings.warn = self.warn_hooked
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# Calling initZopeless with the same arguments twice should emit
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ZopelessTransactionManager.initZopeless(
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ZopelessTransactionManager.initZopeless(
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self.failUnless(self.warned)
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ZopelessTransactionManager.uninstall()
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# Put the warnings module back the way we found it.
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warnings.warn = original_warn
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def warn_hooked(self, message, category=None, stacklevel=1):
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self.failUnlessEqual(alreadyInstalledMsg, str(message))
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lib/canonical/database/tests/test_zopeless_transaction_manager.py
