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Viewing changes to bzrlib/tests/test_hooks.py

  • Committer: Andrew Bennetts
  • Date: 2010-10-08 08:15:14 UTC
  • mto: This revision was merged to the branch mainline in revision 5498.
  • Revision ID: andrew.bennetts@canonical.com-20101008081514-dviqzrdfwyzsqbz2
Split NEWS into per-release doc/en/release-notes/bzr-*.txt

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bzrlib/tests/test_hooks.py
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# Copyright (C) 2007-2012, 2016 Canonical Ltd
 
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# Copyright (C) 2007-2010 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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from bzrlib import (
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    branch,
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    errors,
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    hooks as _mod_hooks,
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    pyutils,
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    tests,
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    )
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from bzrlib.hooks import (
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    HookPoint,
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    Hooks,
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    install_lazy_named_hook,
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    known_hooks,
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    known_hooks_key_to_object,
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    )
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from bzrlib.symbol_versioning import (
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    deprecated_in,
 
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    known_hooks_key_to_parent_and_attribute,
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    )
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class TestHooks(tests.TestCase):
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    def test_create_hook_first(self):
 
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        hooks = Hooks()
 
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        doc = ("Invoked after changing the tip of a branch object. Called with"
 
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            "a bzrlib.branch.PostChangeBranchTipParams object")
 
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        hook = HookPoint("post_tip_change", doc, (0, 15), None)
 
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        hooks.create_hook(hook)
 
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        self.assertEqual(hook, hooks['post_tip_change'])
 
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43
    def test_create_hook_name_collision_errors(self):
 
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        hooks = Hooks()
 
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        doc = ("Invoked after changing the tip of a branch object. Called with"
 
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            "a bzrlib.branch.PostChangeBranchTipParams object")
 
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        hook = HookPoint("post_tip_change", doc, (0, 15), None)
 
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        hook2 = HookPoint("post_tip_change", None, None, None)
 
49
        hooks.create_hook(hook)
 
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        self.assertRaises(errors.DuplicateKey, hooks.create_hook, hook2)
 
51
        self.assertEqual(hook, hooks['post_tip_change'])
 
52
 
40
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    def test_docs(self):
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        """docs() should return something reasonable about the Hooks."""
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        class MyHooks(Hooks):
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            pass
44
 
        hooks = MyHooks("bzrlib.tests.test_hooks", "some_hooks")
 
57
        hooks = MyHooks()
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        hooks['legacy'] = []
46
 
        hooks.add_hook('post_tip_change',
 
59
        hook1 = HookPoint('post_tip_change',
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            "Invoked after the tip of a branch changes. Called with "
48
 
            "a ChangeBranchTipParams object.", (1, 4))
49
 
        hooks.add_hook('pre_tip_change',
 
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            "a ChangeBranchTipParams object.", (1, 4), None)
 
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        hook2 = HookPoint('pre_tip_change',
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            "Invoked before the tip of a branch changes. Called with "
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            "a ChangeBranchTipParams object. Hooks should raise "
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            "TipChangeRejected to signal that a tip change is not permitted.",
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            (1, 6), None)
 
67
        hooks.create_hook(hook1)
 
68
        hooks.create_hook(hook2)
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        self.assertEqualDiff(
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            "MyHooks\n"
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            "-------\n"
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            "signal that a tip change is not permitted.\n", hooks.docs())
79
94
 
80
95
    def test_install_named_hook_raises_unknown_hook(self):
81
 
        hooks = Hooks("bzrlib.tests.test_hooks", "some_hooks")
 
96
        hooks = Hooks()
82
97
        self.assertRaises(errors.UnknownHook, hooks.install_named_hook, 'silly',
83
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                          None, "")
84
99
 
85
100
    def test_install_named_hook_appends_known_hook(self):
86
 
        hooks = Hooks("bzrlib.tests.test_hooks", "some_hooks")
 
101
        hooks = Hooks()
87
102
        hooks['set_rh'] = []
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103
        hooks.install_named_hook('set_rh', None, "demo")
89
104
        self.assertEqual(hooks['set_rh'], [None])
90
105
 
91
106
    def test_install_named_hook_and_retrieve_name(self):
92
 
        hooks = Hooks("bzrlib.tests.test_hooks", "somehooks")
 
107
        hooks = Hooks()
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108
        hooks['set_rh'] = []
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        hooks.install_named_hook('set_rh', None, "demo")
95
110
        self.assertEqual("demo", hooks.get_hook_name(None))
96
111
 
97
 
    def test_uninstall_named_hook(self):
98
 
        hooks = Hooks("bzrlib.tests.test_hooks", "some_hooks")
99
 
        hooks.add_hook('set_rh', "Set revision history", (2, 0))
100
 
        hooks.install_named_hook('set_rh', None, "demo")
101
 
        self.assertEqual(1, len(hooks["set_rh"]))
102
 
        hooks.uninstall_named_hook("set_rh", "demo")
103
 
        self.assertEqual(0, len(hooks["set_rh"]))
104
 
 
105
 
    def test_uninstall_multiple_named_hooks(self):
106
 
        # Multiple callbacks with the same label all get removed
107
 
        hooks = Hooks("bzrlib.tests.test_hooks", "some_hooks")
108
 
        hooks.add_hook('set_rh', "Set revision history", (2, 0))
109
 
        hooks.install_named_hook('set_rh', 1, "demo")
110
 
        hooks.install_named_hook('set_rh', 2, "demo")
111
 
        hooks.install_named_hook('set_rh', 3, "othername")
112
 
        self.assertEqual(3, len(hooks["set_rh"]))
113
 
        hooks.uninstall_named_hook("set_rh", "demo")
114
 
        self.assertEqual(1, len(hooks["set_rh"]))
115
 
 
116
 
    def test_uninstall_named_hook_unknown_callable(self):
117
 
        hooks = Hooks("bzrlib.tests.test_hooks", "some_hooks")
118
 
        hooks.add_hook('set_rh', "Set revision hsitory", (2, 0))
119
 
        self.assertRaises(KeyError, hooks.uninstall_named_hook, "set_rh",
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            "demo")
121
 
 
122
 
    def test_uninstall_named_hook_raises_unknown_hook(self):
123
 
        hooks = Hooks("bzrlib.tests.test_hooks", "some_hooks")
124
 
        self.assertRaises(errors.UnknownHook, hooks.uninstall_named_hook,
125
 
            'silly', "")
126
 
 
127
 
    def test_uninstall_named_hook_old_style(self):
128
 
        hooks = Hooks("bzrlib.tests.test_hooks", "some_hooks")
129
 
        hooks["set_rh"] = []
130
 
        hooks.install_named_hook('set_rh', None, "demo")
131
 
        self.assertRaises(errors.UnsupportedOperation,
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            hooks.uninstall_named_hook, "set_rh", "demo")
133
 
 
134
 
    hooks = Hooks("bzrlib.tests.test_hooks", "TestHooks.hooks")
135
 
 
136
 
    def test_install_lazy_named_hook(self):
137
 
        # When the hook points are not yet registered the hook is
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        # added to the _lazy_hooks dictionary in bzrlib.hooks.
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        self.hooks.add_hook('set_rh', "doc", (0, 15))
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        set_rh = lambda: None
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        install_lazy_named_hook('bzrlib.tests.test_hooks',
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            'TestHooks.hooks', 'set_rh', set_rh, "demo")
143
 
        set_rh_lazy_hooks = _mod_hooks._lazy_hooks[
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            ('bzrlib.tests.test_hooks', 'TestHooks.hooks', 'set_rh')]
145
 
        self.assertEqual(1, len(set_rh_lazy_hooks))
146
 
        self.assertEqual(set_rh, set_rh_lazy_hooks[0][0].get_obj())
147
 
        self.assertEqual("demo", set_rh_lazy_hooks[0][1])
148
 
        self.assertEqual(list(TestHooks.hooks['set_rh']), [set_rh])
149
 
 
150
 
    set_rh = lambda: None
151
 
 
152
 
    def test_install_named_hook_lazy(self):
153
 
        hooks = Hooks("bzrlib.tests.hooks", "some_hooks")
154
 
        hooks['set_rh'] = HookPoint("set_rh", "doc", (0, 15), None)
155
 
        hooks.install_named_hook_lazy('set_rh', 'bzrlib.tests.test_hooks',
156
 
            'TestHooks.set_rh', "demo")
157
 
        self.assertEqual(list(hooks['set_rh']), [TestHooks.set_rh])
158
 
 
159
 
    def test_install_named_hook_lazy_old(self):
160
 
        # An exception is raised if a lazy hook is raised for
161
 
        # an old style hook point.
162
 
        hooks = Hooks("bzrlib.tests.hooks", "some_hooks")
163
 
        hooks['set_rh'] = []
164
 
        self.assertRaises(errors.UnsupportedOperation,
165
 
            hooks.install_named_hook_lazy,
166
 
            'set_rh', 'bzrlib.tests.test_hooks', 'TestHooks.set_rh',
167
 
            "demo")
168
 
 
169
 
    def test_valid_lazy_hooks(self):
170
 
        # Make sure that all the registered lazy hooks are referring to existing
171
 
        # hook points which allow lazy registration.
172
 
        for key, callbacks in _mod_hooks._lazy_hooks.iteritems():
173
 
            (module_name, member_name, hook_name) = key
174
 
            obj = pyutils.get_named_object(module_name, member_name)
175
 
            self.assertEqual(obj._module, module_name)
176
 
            self.assertEqual(obj._member_name, member_name)
177
 
            self.assertTrue(hook_name in obj)
178
 
            self.assertIs(callbacks, obj[hook_name]._callbacks)
179
 
 
180
112
 
181
113
class TestHook(tests.TestCase):
182
114
 
209
141
        hook.hook(callback, "my callback")
210
142
        self.assertEqual([callback], list(hook))
211
143
 
212
 
    def lazy_callback():
213
 
        pass
214
 
 
215
 
    def test_lazy_hook(self):
216
 
        hook = HookPoint("foo", "no docs", None, None)
217
 
        hook.hook_lazy(
218
 
            "bzrlib.tests.test_hooks", "TestHook.lazy_callback",
219
 
            "my callback")
220
 
        self.assertEqual([TestHook.lazy_callback], list(hook))
221
 
 
222
 
    def test_uninstall(self):
223
 
        hook = HookPoint("foo", "no docs", None, None)
224
 
        hook.hook_lazy(
225
 
            "bzrlib.tests.test_hooks", "TestHook.lazy_callback",
226
 
            "my callback")
227
 
        self.assertEqual([TestHook.lazy_callback], list(hook))
228
 
        hook.uninstall("my callback")
229
 
        self.assertEqual([], list(hook))
230
 
 
231
 
    def test_uninstall_unknown(self):
232
 
        hook = HookPoint("foo", "no docs", None, None)
233
 
        self.assertRaises(KeyError, hook.uninstall, "my callback")
234
 
 
235
144
    def test___repr(self):
236
145
        # The repr should list all the callbacks, with names.
237
146
        hook = HookPoint("foo", "no docs", None, None)
268
177
 
269
178
    def test_known_hooks_key_to_parent_and_attribute(self):
270
179
        self.assertEqual((branch.Branch, 'hooks'),
271
 
            known_hooks.key_to_parent_and_attribute(
 
180
            known_hooks_key_to_parent_and_attribute(
272
181
            ('bzrlib.branch', 'Branch.hooks')))
273
182
        self.assertEqual((branch, 'Branch'),
274
 
            known_hooks.key_to_parent_and_attribute(
 
183
            known_hooks_key_to_parent_and_attribute(
275
184
            ('bzrlib.branch', 'Branch')))