1
# Copyright (C) 2006, 2008-2011 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
"""Tests for the Registry classes"""
30
class TestRegistry(tests.TestCase):
32
def register_stuff(self, a_registry):
33
a_registry.register('one', 1)
34
a_registry.register('two', 2)
35
a_registry.register('four', 4)
36
a_registry.register('five', 5)
38
def test_registry(self):
39
a_registry = registry.Registry()
40
self.register_stuff(a_registry)
42
self.failUnless(a_registry.default_key is None)
44
# test get() (self.default_key is None)
45
self.assertRaises(KeyError, a_registry.get)
46
self.assertRaises(KeyError, a_registry.get, None)
47
self.assertEqual(2, a_registry.get('two'))
48
self.assertRaises(KeyError, a_registry.get, 'three')
50
# test _set_default_key
51
a_registry.default_key = 'five'
52
self.failUnless(a_registry.default_key == 'five')
53
self.assertEqual(5, a_registry.get())
54
self.assertEqual(5, a_registry.get(None))
55
# If they ask for a specific entry, they should get KeyError
56
# not the default value. They can always pass None if they prefer
57
self.assertRaises(KeyError, a_registry.get, 'six')
58
self.assertRaises(KeyError, a_registry._set_default_key, 'six')
61
self.assertEqual(['five', 'four', 'one', 'two'], a_registry.keys())
63
def test_registry_funcs(self):
64
a_registry = registry.Registry()
65
self.register_stuff(a_registry)
67
self.failUnless('one' in a_registry)
68
a_registry.remove('one')
69
self.failIf('one' in a_registry)
70
self.assertRaises(KeyError, a_registry.get, 'one')
72
a_registry.register('one', 'one')
74
self.assertEqual(['five', 'four', 'one', 'two'],
75
sorted(a_registry.keys()))
76
self.assertEqual([('five', 5), ('four', 4),
77
('one', 'one'), ('two', 2)],
78
sorted(a_registry.iteritems()))
80
def test_register_override(self):
81
a_registry = registry.Registry()
82
a_registry.register('one', 'one')
83
self.assertRaises(KeyError, a_registry.register, 'one', 'two')
84
self.assertRaises(KeyError, a_registry.register, 'one', 'two',
85
override_existing=False)
87
a_registry.register('one', 'two', override_existing=True)
88
self.assertEqual('two', a_registry.get('one'))
90
self.assertRaises(KeyError, a_registry.register_lazy,
91
'one', 'three', 'four')
93
a_registry.register_lazy('one', 'module', 'member',
94
override_existing=True)
96
def test_registry_help(self):
97
a_registry = registry.Registry()
98
a_registry.register('one', 1, help='help text for one')
99
# We should not have to import the module to return the help
101
a_registry.register_lazy('two', 'nonexistent_module', 'member',
102
help='help text for two')
104
# We should be able to handle a callable to get information
106
def generic_help(reg, key):
107
help_calls.append(key)
108
return 'generic help for %s' % (key,)
109
a_registry.register('three', 3, help=generic_help)
110
a_registry.register_lazy('four', 'nonexistent_module', 'member2',
112
a_registry.register('five', 5)
114
def help_from_object(reg, key):
118
class SimpleObj(object):
120
return 'this is my help'
121
a_registry.register('six', SimpleObj(), help=help_from_object)
123
self.assertEqual('help text for one', a_registry.get_help('one'))
124
self.assertEqual('help text for two', a_registry.get_help('two'))
125
self.assertEqual('generic help for three',
126
a_registry.get_help('three'))
127
self.assertEqual(['three'], help_calls)
128
self.assertEqual('generic help for four',
129
a_registry.get_help('four'))
130
self.assertEqual(['three', 'four'], help_calls)
131
self.assertEqual(None, a_registry.get_help('five'))
132
self.assertEqual('this is my help', a_registry.get_help('six'))
134
self.assertRaises(KeyError, a_registry.get_help, None)
135
self.assertRaises(KeyError, a_registry.get_help, 'seven')
137
a_registry.default_key = 'one'
138
self.assertEqual('help text for one', a_registry.get_help(None))
139
self.assertRaises(KeyError, a_registry.get_help, 'seven')
141
self.assertEqual([('five', None),
142
('four', 'generic help for four'),
143
('one', 'help text for one'),
144
('six', 'this is my help'),
145
('three', 'generic help for three'),
146
('two', 'help text for two'),
147
], sorted((key, a_registry.get_help(key))
148
for key in a_registry.keys()))
150
# We don't know what order it was called in, but we should get
151
# 2 more calls to three and four
152
self.assertEqual(['four', 'four', 'three', 'three'],
155
def test_registry_info(self):
156
a_registry = registry.Registry()
157
a_registry.register('one', 1, info='string info')
158
# We should not have to import the module to return the info
159
a_registry.register_lazy('two', 'nonexistent_module', 'member',
162
# We should be able to handle a callable to get information
163
a_registry.register('three', 3, info=['a', 'list'])
165
a_registry.register_lazy('four', 'nonexistent_module', 'member2',
167
a_registry.register('five', 5)
169
self.assertEqual('string info', a_registry.get_info('one'))
170
self.assertEqual(2, a_registry.get_info('two'))
171
self.assertEqual(['a', 'list'], a_registry.get_info('three'))
172
self.assertIs(obj, a_registry.get_info('four'))
173
self.assertIs(None, a_registry.get_info('five'))
175
self.assertRaises(KeyError, a_registry.get_info, None)
176
self.assertRaises(KeyError, a_registry.get_info, 'six')
178
a_registry.default_key = 'one'
179
self.assertEqual('string info', a_registry.get_info(None))
180
self.assertRaises(KeyError, a_registry.get_info, 'six')
182
self.assertEqual([('five', None),
184
('one', 'string info'),
185
('three', ['a', 'list']),
187
], sorted((key, a_registry.get_info(key))
188
for key in a_registry.keys()))
190
def test_get_prefix(self):
191
my_registry = registry.Registry()
192
http_object = object()
193
sftp_object = object()
194
my_registry.register('http:', http_object)
195
my_registry.register('sftp:', sftp_object)
196
found_object, suffix = my_registry.get_prefix('http://foo/bar')
197
self.assertEqual('//foo/bar', suffix)
198
self.assertIs(http_object, found_object)
199
self.assertIsNot(sftp_object, found_object)
200
found_object, suffix = my_registry.get_prefix('sftp://baz/qux')
201
self.assertEqual('//baz/qux', suffix)
202
self.assertIs(sftp_object, found_object)
205
class TestRegistryIter(tests.TestCase):
206
"""Test registry iteration behaviors.
208
There are dark corner cases here when the registered objects trigger
209
addition in the iterated registry.
213
super(TestRegistryIter, self).setUp()
215
# We create a registry with "official" objects and "hidden"
216
# objects. The later represent the side effects that led to bug #277048
218
self.registry = registry.Registry()
221
self.registry.register('hidden', None)
223
self.registry.register('passive', None)
224
self.registry.register('active', register_more)
225
self.registry.register('passive-too', None)
227
class InvasiveGetter(registry._ObjectGetter):
229
def get_obj(inner_self):
230
# Surprise ! Getting a registered object (think lazy loaded
231
# module) register yet another object !
232
self.registry.register('more hidden', None)
233
return inner_self._obj
235
self.registry.register('hacky', None)
236
# We peek under the covers because the alternative is to use lazy
237
# registration and create a module that can reference our test registry
238
# it's too much work for such a corner case -- vila 090916
239
self.registry._dict['hacky'] = InvasiveGetter(None)
241
def _iter_them(self, iter_func_name):
242
iter_func = getattr(self.registry, iter_func_name, None)
243
self.assertIsNot(None, iter_func)
245
for name, func in iter_func():
247
self.assertFalse(name in ('hidden', 'more hidden'))
249
# Using an object register another one as a side effect
251
self.assertEqual(4, count)
253
def test_iteritems(self):
254
# the dict is modified during the iteration
255
self.assertRaises(RuntimeError, self._iter_them, 'iteritems')
257
def test_items(self):
258
# we should be able to iterate even if one item modify the dict
259
self._iter_them('items')
262
class TestRegistryWithDirs(tests.TestCaseInTempDir):
263
"""Registry tests that require temporary dirs"""
265
def create_plugin_file(self, contents):
266
"""Create a file to be used as a plugin.
268
This is created in a temporary directory, so that we
269
are sure that it doesn't start in the plugin path.
272
plugin_name = 'bzr_plugin_a_%s' % (osutils.rand_chars(4),)
273
open('tmp/'+plugin_name+'.py', 'wb').write(contents)
276
def create_simple_plugin(self):
277
return self.create_plugin_file(
280
'def function(a,b,c):\n'
283
'class MyClass(object):\n'
284
' def __init__(self, a):\n'
289
def test_lazy_import_registry_foo(self):
290
a_registry = registry.Registry()
291
a_registry.register_lazy('foo', 'bzrlib.branch', 'Branch')
292
a_registry.register_lazy('bar', 'bzrlib.branch', 'Branch.hooks')
293
self.assertEqual(branch.Branch, a_registry.get('foo'))
294
self.assertEqual(branch.Branch.hooks, a_registry.get('bar'))
296
def test_lazy_import_registry(self):
297
plugin_name = self.create_simple_plugin()
298
a_registry = registry.Registry()
299
a_registry.register_lazy('obj', plugin_name, 'object1')
300
a_registry.register_lazy('function', plugin_name, 'function')
301
a_registry.register_lazy('klass', plugin_name, 'MyClass')
302
a_registry.register_lazy('module', plugin_name, None)
304
self.assertEqual(['function', 'klass', 'module', 'obj'],
305
sorted(a_registry.keys()))
306
# The plugin should not be loaded until we grab the first object
307
self.failIf(plugin_name in sys.modules)
309
# By default the plugin won't be in the search path
310
self.assertRaises(ImportError, a_registry.get, 'obj')
312
plugin_path = os.getcwd() + '/tmp'
313
sys.path.append(plugin_path)
315
obj = a_registry.get('obj')
316
self.assertEqual('foo', obj)
317
self.failUnless(plugin_name in sys.modules)
319
# Now grab another object
320
func = a_registry.get('function')
321
self.assertEqual(plugin_name, func.__module__)
322
self.assertEqual('function', func.__name__)
323
self.assertEqual((1, [], '3'), func(1, [], '3'))
325
# And finally a class
326
klass = a_registry.get('klass')
327
self.assertEqual(plugin_name, klass.__module__)
328
self.assertEqual('MyClass', klass.__name__)
331
self.assertIsInstance(inst, klass)
332
self.assertEqual(1, inst.a)
334
module = a_registry.get('module')
335
self.assertIs(obj, module.object1)
336
self.assertIs(func, module.function)
337
self.assertIs(klass, module.MyClass)
339
sys.path.remove(plugin_path)
added
removed
bzrlib/tests/test_registry.py
