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Viewing changes to bzrlib/tests/test_symbol_versioning.py

  • Committer: Robert Collins
  • Date: 2010-05-11 08:44:59 UTC
  • mfrom: (5221 +trunk)
  • mto: This revision was merged to the branch mainline in revision 5223.
  • Revision ID: robertc@robertcollins.net-20100511084459-pb0uinna9zs3wu59
Merge trunk - resolve conflicts.

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bzrlib/tests/test_symbol_versioning.py
1
 
# Copyright (C) 2006 by Canonical Ltd
2
 
#   Authors: Robert Collins <robert.collins@canonical.com>
 
1
# Copyright (C) 2006-2010 Canonical Ltd
3
2
#
4
3
# This program is free software; you can redistribute it and/or modify
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4
# it under the terms of the GNU General Public License as published by
13
12
#
14
13
# You should have received a copy of the GNU General Public License
15
14
# along with this program; if not, write to the Free Software
16
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
16
 
18
17
"""Symbol versioning tests."""
19
18
 
20
 
import bzrlib.symbol_versioning as symbol_versioning
 
19
import warnings
 
20
 
 
21
from bzrlib import symbol_versioning
 
22
from bzrlib.symbol_versioning import (
 
23
    deprecated_function,
 
24
    deprecated_in,
 
25
    deprecated_list,
 
26
    deprecated_method,
 
27
    )
21
28
from bzrlib.tests import TestCase
22
29
 
23
30
 
24
 
@symbol_versioning.deprecated_function(symbol_versioning.zero_seven)
25
 
def deprecated_function():
 
31
@deprecated_function(deprecated_in((0, 7, 0)))
 
32
def sample_deprecated_function():
26
33
    """Deprecated function docstring."""
27
34
    return 1
28
35
 
29
36
 
30
 
a_deprecated_list = symbol_versioning.deprecated_list(symbol_versioning.zero_nine,
 
37
a_deprecated_list = symbol_versioning.deprecated_list(deprecated_in((0, 9, 0)),
31
38
    'a_deprecated_list', ['one'], extra="Don't use me")
32
39
 
33
40
 
 
41
a_deprecated_dict = symbol_versioning.DeprecatedDict(
 
42
    deprecated_in((0, 14, 0)),
 
43
    'a_deprecated_dict',
 
44
    dict(a=42),
 
45
    advice='Pull the other one!',
 
46
    )
 
47
 
 
48
 
34
49
class TestDeprecationWarnings(TestCase):
35
50
 
36
51
    def capture_warning(self, message, category, stacklevel=None):
40
55
        super(TestDeprecationWarnings, self).setUp()
41
56
        self._warnings = []
42
57
    
43
 
    @symbol_versioning.deprecated_method(symbol_versioning.zero_seven)
 
58
    @deprecated_method(deprecated_in((0, 7, 0)))
44
59
    def deprecated_method(self):
45
60
        """Deprecated method docstring.
46
 
        
 
61
 
47
62
        This might explain stuff.
48
63
        """
49
64
        return 1
50
65
 
 
66
    @staticmethod
 
67
    @deprecated_function(deprecated_in((0, 7, 0)))
 
68
    def deprecated_static():
 
69
        """Deprecated static."""
 
70
        return 1
 
71
 
 
72
    def test_deprecated_static(self):
 
73
        # XXX: The results are not quite right because the class name is not
 
74
        # shown - however it is enough to give people a good indication of
 
75
        # where the problem is.
 
76
        expected_warning = (
 
77
            "bzrlib.tests.test_symbol_versioning."
 
78
            "deprecated_static "
 
79
            "was deprecated in version 0.7.0.", DeprecationWarning, 2)
 
80
        expected_docstring = (
 
81
            'Deprecated static.\n'
 
82
            '\n'
 
83
            'This function was deprecated in version 0.7.0.\n'
 
84
            )
 
85
        self.check_deprecated_callable(
 
86
            expected_warning, expected_docstring,
 
87
            "deprecated_static",
 
88
            "bzrlib.tests.test_symbol_versioning",
 
89
            self.deprecated_static)
 
90
 
51
91
    def test_deprecated_method(self):
52
92
        expected_warning = (
53
93
            "bzrlib.tests.test_symbol_versioning."
54
94
            "TestDeprecationWarnings.deprecated_method "
55
 
            "was deprecated in version 0.7.", DeprecationWarning, 2)
56
 
        expected_docstring = ('Deprecated method docstring.\n'
57
 
                              '        \n'
58
 
                              '        This might explain stuff.\n'
59
 
                              '        \n'
60
 
                              '        This method was deprecated in version 0.7.\n'
61
 
                              '        ')
 
95
            "was deprecated in version 0.7.0.", DeprecationWarning, 2)
 
96
        expected_docstring = (
 
97
            'Deprecated method docstring.\n'
 
98
            '\n'
 
99
            '        This might explain stuff.\n'
 
100
            '        \n'
 
101
            '        This method was deprecated in version 0.7.0.\n'
 
102
            '        ')
62
103
        self.check_deprecated_callable(expected_warning, expected_docstring,
63
104
                                       "deprecated_method",
64
105
                                       "bzrlib.tests.test_symbol_versioning",
66
107
 
67
108
    def test_deprecated_function(self):
68
109
        expected_warning = (
69
 
            "bzrlib.tests.test_symbol_versioning.deprecated_function "
70
 
            "was deprecated in version 0.7.", DeprecationWarning, 2)
 
110
            "bzrlib.tests.test_symbol_versioning.sample_deprecated_function "
 
111
            "was deprecated in version 0.7.0.", DeprecationWarning, 2)
71
112
        expected_docstring = ('Deprecated function docstring.\n'
72
113
                              '\n'
73
 
                              'This function was deprecated in version 0.7.\n'
 
114
                              'This function was deprecated in version 0.7.0.\n'
74
115
                              )
75
116
        self.check_deprecated_callable(expected_warning, expected_docstring,
76
 
                                       "deprecated_function",
 
117
                                       "sample_deprecated_function",
77
118
                                       "bzrlib.tests.test_symbol_versioning",
78
 
                                       deprecated_function)
 
119
                                       sample_deprecated_function)
79
120
 
80
121
    def test_deprecated_list(self):
81
122
        expected_warning = (
82
 
            "Modifying a_deprecated_list was deprecated in version 0.9."
 
123
            "Modifying a_deprecated_list was deprecated in version 0.9.0."
83
124
            " Don't use me", DeprecationWarning, 3)
84
 
        expected_doctstring = ('appending to a_deprecated_list is deprecated')
85
 
 
86
125
        old_warning_method = symbol_versioning.warn
87
126
        try:
88
127
            symbol_versioning.set_warning_method(self.capture_warning)
117
156
        finally:
118
157
            symbol_versioning.set_warning_method(old_warning_method)
119
158
 
 
159
    def test_deprecated_dict(self):
 
160
        expected_warning = (
 
161
            "access to a_deprecated_dict was deprecated in version 0.14.0."
 
162
            " Pull the other one!", DeprecationWarning, 2)
 
163
        old_warning_method = symbol_versioning.warn
 
164
        try:
 
165
            symbol_versioning.set_warning_method(self.capture_warning)
 
166
            self.assertEqual(len(a_deprecated_dict), 1)
 
167
            self.assertEqual([expected_warning], self._warnings)
 
168
 
 
169
            a_deprecated_dict['b'] = 42
 
170
            self.assertEqual(a_deprecated_dict['b'], 42)
 
171
            self.assertTrue('b' in a_deprecated_dict)
 
172
            del a_deprecated_dict['b']
 
173
            self.assertFalse('b' in a_deprecated_dict)
 
174
            self.assertEqual([expected_warning] * 6, self._warnings)
 
175
        finally:
 
176
            symbol_versioning.set_warning_method(old_warning_method)
 
177
 
 
178
 
120
179
    def check_deprecated_callable(self, expected_warning, expected_docstring,
121
180
                                  expected_name, expected_module,
122
181
                                  deprecated_callable):
 
182
        if __doc__ is None:
 
183
            # With -OO the docstring should just be the deprecated version
 
184
            expected_docstring = expected_docstring.split('\n')[-2].lstrip()
123
185
        old_warning_method = symbol_versioning.warn
124
186
        try:
125
187
            symbol_versioning.set_warning_method(self.capture_warning)
134
196
            self.assertTrue(deprecated_callable.is_deprecated)
135
197
        finally:
136
198
            symbol_versioning.set_warning_method(old_warning_method)
137
 
    
 
199
 
138
200
    def test_deprecated_passed(self):
139
201
        self.assertEqual(True, symbol_versioning.deprecated_passed(None))
140
202
        self.assertEqual(True, symbol_versioning.deprecated_passed(True))
147
209
        """We can get a deprecation string for a method or function."""
148
210
        self.assertEqual('bzrlib.tests.test_symbol_versioning.'
149
211
            'TestDeprecationWarnings.test_deprecation_string was deprecated in '
150
 
            'version 0.11.',
 
212
            'version 0.11.0.',
151
213
            symbol_versioning.deprecation_string(
152
 
            self.test_deprecation_string, symbol_versioning.zero_eleven))
 
214
            self.test_deprecation_string,
 
215
            deprecated_in((0, 11, 0))))
153
216
        self.assertEqual('bzrlib.symbol_versioning.deprecated_function was '
154
 
            'deprecated in version 0.11.',
 
217
            'deprecated in version 0.11.0.',
155
218
            symbol_versioning.deprecation_string(
156
219
                symbol_versioning.deprecated_function,
157
 
                symbol_versioning.zero_eleven))
 
220
                deprecated_in((0, 11, 0))))
 
221
 
 
222
 
 
223
class TestSuppressAndActivate(TestCase):
 
224
 
 
225
    def setUp(self):
 
226
        TestCase.setUp(self)
 
227
        existing_filters = list(warnings.filters)
 
228
        def restore():
 
229
            warnings.filters[:] = existing_filters
 
230
        self.addCleanup(restore)
 
231
        # Clean out the filters so we have a clean slate.
 
232
        warnings.resetwarnings()
 
233
 
 
234
    def assertFirstWarning(self, action, category):
 
235
        """Test the first warning in the filters is correct"""
 
236
        first = warnings.filters[0]
 
237
        self.assertEqual((action, category), (first[0], first[2]))
 
238
 
 
239
    def test_suppress_deprecation_warnings(self):
 
240
        """suppress_deprecation_warnings sets DeprecationWarning to ignored."""
 
241
        symbol_versioning.suppress_deprecation_warnings()
 
242
        self.assertFirstWarning('ignore', DeprecationWarning)
 
243
 
 
244
    def test_suppress_deprecation_with_warning_filter(self):
 
245
        """don't suppress if we already have a filter"""
 
246
        warnings.filterwarnings('error', category=Warning)
 
247
        self.assertFirstWarning('error', Warning)
 
248
        self.assertEqual(1, len(warnings.filters))
 
249
        symbol_versioning.suppress_deprecation_warnings(override=False)
 
250
        self.assertFirstWarning('error', Warning)
 
251
        self.assertEqual(1, len(warnings.filters))
 
252
 
 
253
    def test_suppress_deprecation_with_filter(self):
 
254
        """don't suppress if we already have a filter"""
 
255
        warnings.filterwarnings('error', category=DeprecationWarning)
 
256
        self.assertFirstWarning('error', DeprecationWarning)
 
257
        self.assertEqual(1, len(warnings.filters))
 
258
        symbol_versioning.suppress_deprecation_warnings(override=False)
 
259
        self.assertFirstWarning('error', DeprecationWarning)
 
260
        self.assertEqual(1, len(warnings.filters))
 
261
        symbol_versioning.suppress_deprecation_warnings(override=True)
 
262
        self.assertFirstWarning('ignore', DeprecationWarning)
 
263
        self.assertEqual(2, len(warnings.filters))
 
264
 
 
265
    def test_activate_deprecation_no_error(self):
 
266
        # First nuke the filters, so we know it is clean
 
267
        symbol_versioning.activate_deprecation_warnings()
 
268
        self.assertFirstWarning('default', DeprecationWarning)
 
269
 
 
270
    def test_activate_deprecation_with_error(self):
 
271
        # First nuke the filters, so we know it is clean
 
272
        # Add a warning == error rule
 
273
        warnings.filterwarnings('error', category=Warning)
 
274
        self.assertFirstWarning('error', Warning)
 
275
        self.assertEqual(1, len(warnings.filters))
 
276
        symbol_versioning.activate_deprecation_warnings(override=False)
 
277
        # There should not be a new warning
 
278
        self.assertFirstWarning('error', Warning)
 
279
        self.assertEqual(1, len(warnings.filters))
 
280
 
 
281
    def test_activate_deprecation_with_DW_error(self):
 
282
        # First nuke the filters, so we know it is clean
 
283
        # Add a warning == error rule
 
284
        warnings.filterwarnings('error', category=DeprecationWarning)
 
285
        self.assertFirstWarning('error', DeprecationWarning)
 
286
        self.assertEqual(1, len(warnings.filters))
 
287
        symbol_versioning.activate_deprecation_warnings(override=False)
 
288
        # There should not be a new warning
 
289
        self.assertFirstWarning('error', DeprecationWarning)
 
290
        self.assertEqual(1, len(warnings.filters))
 
291
        symbol_versioning.activate_deprecation_warnings(override=True)
 
292
        self.assertFirstWarning('default', DeprecationWarning)
 
293
        self.assertEqual(2, len(warnings.filters))