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Viewing changes to bzrlib/tests/test_symbol_versioning.py

  • Committer: Robert Collins
  • Date: 2009-07-07 04:32:13 UTC
  • mto: This revision was merged to the branch mainline in revision 4524.
  • Revision ID: robertc@robertcollins.net-20090707043213-4hjjhgr40iq7gk2d
More informative assertions in xml serialisation.

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bzrlib/tests/test_symbol_versioning.py
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# Copyright (C) 2006, 2007 Canonical Ltd
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#   Authors: Robert Collins <robert.collins@canonical.com>
 
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# Copyright (C) 2006, 2007, 2009 Canonical Ltd
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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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#
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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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Symbol versioning tests."""
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import bzrlib.symbol_versioning as symbol_versioning
 
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import warnings
 
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from bzrlib import symbol_versioning
 
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from bzrlib.symbol_versioning import (
 
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    deprecated_function,
 
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    deprecated_in,
 
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    deprecated_list,
 
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    deprecated_method,
 
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    )
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from bzrlib.tests import TestCase
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@symbol_versioning.deprecated_function(symbol_versioning.zero_seven)
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def deprecated_function():
 
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@deprecated_function(deprecated_in((0, 7, 0)))
 
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def sample_deprecated_function():
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    """Deprecated function docstring."""
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    return 1
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a_deprecated_list = symbol_versioning.deprecated_list(symbol_versioning.zero_nine,
 
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a_deprecated_list = symbol_versioning.deprecated_list(deprecated_in((0, 9, 0)),
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    'a_deprecated_list', ['one'], extra="Don't use me")
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a_deprecated_dict = symbol_versioning.DeprecatedDict(
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    symbol_versioning.zero_fourteen,
 
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    deprecated_in((0, 14, 0)),
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    'a_deprecated_dict',
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    dict(a=42),
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    advice='Pull the other one!',
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        super(TestDeprecationWarnings, self).setUp()
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        self._warnings = []
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    @symbol_versioning.deprecated_method(symbol_versioning.zero_seven)
 
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    @deprecated_method(deprecated_in((0, 7, 0)))
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    def deprecated_method(self):
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        """Deprecated method docstring.
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        This might explain stuff.
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        """
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        return 1
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    @staticmethod
 
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    @deprecated_function(deprecated_in((0, 7, 0)))
 
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    def deprecated_static():
 
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        """Deprecated static."""
 
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        return 1
 
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    def test_deprecated_static(self):
 
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        # XXX: The results are not quite right because the class name is not
 
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        # shown - however it is enough to give people a good indication of
 
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        # where the problem is.
 
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        expected_warning = (
 
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            "bzrlib.tests.test_symbol_versioning."
 
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            "deprecated_static "
 
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            "was deprecated in version 0.7.", DeprecationWarning, 2)
 
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        expected_docstring = (
 
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            'Deprecated static.\n'
 
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            '\n'
 
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            'This function was deprecated in version 0.7.\n'
 
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            )
 
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        self.check_deprecated_callable(
 
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            expected_warning, expected_docstring,
 
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            "deprecated_static",
 
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            "bzrlib.tests.test_symbol_versioning",
 
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            self.deprecated_static)
 
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    def test_deprecated_method(self):
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        expected_warning = (
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            "bzrlib.tests.test_symbol_versioning."
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            "TestDeprecationWarnings.deprecated_method "
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            "was deprecated in version 0.7.", DeprecationWarning, 2)
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        expected_docstring = ('Deprecated method docstring.\n'
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                              '        \n'
 
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                              '\n'
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                              '        This might explain stuff.\n'
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                              '        \n'
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                              '        This method was deprecated in version 0.7.\n'
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    def test_deprecated_function(self):
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        expected_warning = (
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            "bzrlib.tests.test_symbol_versioning.deprecated_function "
 
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            "bzrlib.tests.test_symbol_versioning.sample_deprecated_function "
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            "was deprecated in version 0.7.", DeprecationWarning, 2)
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        expected_docstring = ('Deprecated function docstring.\n'
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                              '\n'
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                              'This function was deprecated in version 0.7.\n'
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                              )
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        self.check_deprecated_callable(expected_warning, expected_docstring,
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                                       "deprecated_function",
 
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                                       "sample_deprecated_function",
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                                       "bzrlib.tests.test_symbol_versioning",
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                                       deprecated_function)
 
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                                       sample_deprecated_function)
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    def test_deprecated_list(self):
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        expected_warning = (
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            self.assertTrue(deprecated_callable.is_deprecated)
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        finally:
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            symbol_versioning.set_warning_method(old_warning_method)
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    def test_deprecated_passed(self):
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        self.assertEqual(True, symbol_versioning.deprecated_passed(None))
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        self.assertEqual(True, symbol_versioning.deprecated_passed(True))
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            'TestDeprecationWarnings.test_deprecation_string was deprecated in '
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            'version 0.11.',
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            symbol_versioning.deprecation_string(
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            self.test_deprecation_string, symbol_versioning.zero_eleven))
 
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            self.test_deprecation_string,
 
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            deprecated_in((0, 11, 0))))
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        self.assertEqual('bzrlib.symbol_versioning.deprecated_function was '
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            'deprecated in version 0.11.',
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            symbol_versioning.deprecation_string(
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                symbol_versioning.deprecated_function,
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                symbol_versioning.zero_eleven))
 
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                deprecated_in((0, 11, 0))))
 
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class TestSuppressAndActivate(TestCase):
 
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    def setUp(self):
 
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        TestCase.setUp(self)
 
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        existing_filters = list(warnings.filters)
 
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        def restore():
 
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            warnings.filters[:] = existing_filters
 
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        self.addCleanup(restore)
 
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        # Clean out the filters so we have a clean slate.
 
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        warnings.resetwarnings()
 
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    def assertFirstWarning(self, action, category):
 
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        """Test the first warning in the filters is correct"""
 
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        first = warnings.filters[0]
 
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        self.assertEqual((action, category), (first[0], first[2]))
 
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    def test_suppress_deprecation_warnings(self):
 
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        """suppress_deprecation_warnings sets DeprecationWarning to ignored."""
 
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        symbol_versioning.suppress_deprecation_warnings()
 
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        self.assertFirstWarning('ignore', DeprecationWarning)
 
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    def test_suppress_deprecation_with_warning_filter(self):
 
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        """don't suppress if we already have a filter"""
 
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        warnings.filterwarnings('error', category=Warning)
 
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        self.assertFirstWarning('error', Warning)
 
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        self.assertEqual(1, len(warnings.filters))
 
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        symbol_versioning.suppress_deprecation_warnings(override=False)
 
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        self.assertFirstWarning('error', Warning)
 
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        self.assertEqual(1, len(warnings.filters))
 
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    def test_suppress_deprecation_with_filter(self):
 
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        """don't suppress if we already have a filter"""
 
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        warnings.filterwarnings('error', category=DeprecationWarning)
 
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        self.assertFirstWarning('error', DeprecationWarning)
 
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        self.assertEqual(1, len(warnings.filters))
 
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        symbol_versioning.suppress_deprecation_warnings(override=False)
 
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        self.assertFirstWarning('error', DeprecationWarning)
 
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        self.assertEqual(1, len(warnings.filters))
 
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        symbol_versioning.suppress_deprecation_warnings(override=True)
 
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        self.assertFirstWarning('ignore', DeprecationWarning)
 
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        self.assertEqual(2, len(warnings.filters))
 
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261
    def test_activate_deprecation_no_error(self):
 
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        # First nuke the filters, so we know it is clean
 
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        symbol_versioning.activate_deprecation_warnings()
 
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        self.assertFirstWarning('default', DeprecationWarning)
 
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    def test_activate_deprecation_with_error(self):
 
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        # First nuke the filters, so we know it is clean
 
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        # Add a warning == error rule
 
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        warnings.filterwarnings('error', category=Warning)
 
270
        self.assertFirstWarning('error', Warning)
 
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        self.assertEqual(1, len(warnings.filters))
 
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        symbol_versioning.activate_deprecation_warnings(override=False)
 
273
        # There should not be a new warning
 
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        self.assertFirstWarning('error', Warning)
 
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        self.assertEqual(1, len(warnings.filters))
 
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277
    def test_activate_deprecation_with_DW_error(self):
 
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        # First nuke the filters, so we know it is clean
 
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        # Add a warning == error rule
 
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        warnings.filterwarnings('error', category=DeprecationWarning)
 
281
        self.assertFirstWarning('error', DeprecationWarning)
 
282
        self.assertEqual(1, len(warnings.filters))
 
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        symbol_versioning.activate_deprecation_warnings(override=False)
 
284
        # There should not be a new warning
 
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        self.assertFirstWarning('error', DeprecationWarning)
 
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        self.assertEqual(1, len(warnings.filters))
 
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        symbol_versioning.activate_deprecation_warnings(override=True)
 
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        self.assertFirstWarning('default', DeprecationWarning)
 
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        self.assertEqual(2, len(warnings.filters))