summaryrefslogtreecommitdiffstats
path: root/tests/test_ipalib/test_plugable.py
blob: 79121cf73294cb0f29521880c9a81872948a3cf2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
# Authors:
#   Jason Gerard DeRose <jderose@redhat.com>
#
# Copyright (C) 2008  Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2 only
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

"""
Test the `ipalib.plugable` module.
"""

import inspect
from tests.util import raises, no_set, no_del, read_only
from tests.util import getitem, setitem, delitem
from tests.util import ClassChecker, create_test_api
from ipalib import plugable, errors


class test_SetProxy(ClassChecker):
    """
    Test the `ipalib.plugable.SetProxy` class.
    """
    _cls = plugable.SetProxy

    def test_class(self):
        """
        Test the `ipalib.plugable.SetProxy` class.
        """
        assert self.cls.__bases__ == (plugable.ReadOnly,)

    def test_init(self):
        """
        Test the `ipalib.plugable.SetProxy.__init__` method.
        """
        okay = (set, frozenset, dict)
        fail = (list, tuple)
        for t in okay:
            self.cls(t())
            raises(TypeError, self.cls, t)
        for t in fail:
            raises(TypeError, self.cls, t())
            raises(TypeError, self.cls, t)

    def test_SetProxy(self):
        """
        Test container emulation of `ipalib.plugable.SetProxy` class.
        """
        def get_key(i):
            return 'key_%d' % i

        cnt = 10
        target = set()
        proxy = self.cls(target)
        for i in xrange(cnt):
            key = get_key(i)

            # Check initial state
            assert len(proxy) == len(target)
            assert list(proxy) == sorted(target)
            assert key not in proxy
            assert key not in target

            # Add and test again
            target.add(key)
            assert len(proxy) == len(target)
            assert list(proxy) == sorted(target)
            assert key in proxy
            assert key in target


class test_DictProxy(ClassChecker):
    """
    Test the `ipalib.plugable.DictProxy` class.
    """
    _cls = plugable.DictProxy

    def test_class(self):
        """
        Test the `ipalib.plugable.DictProxy` class.
        """
        assert self.cls.__bases__ == (plugable.SetProxy,)

    def test_init(self):
        """
        Test the `ipalib.plugable.DictProxy.__init__` method.
        """
        self.cls(dict())
        raises(TypeError, self.cls, dict)
        fail = (set, frozenset, list, tuple)
        for t in fail:
            raises(TypeError, self.cls, t())
            raises(TypeError, self.cls, t)

    def test_DictProxy(self):
        """
        Test container emulation of `ipalib.plugable.DictProxy` class.
        """
        def get_kv(i):
            return (
                'key_%d' % i,
                'val_%d' % i,
            )
        cnt = 10
        target = dict()
        proxy = self.cls(target)
        for i in xrange(cnt):
            (key, val) = get_kv(i)

            # Check initial state
            assert len(proxy) == len(target)
            assert list(proxy) == sorted(target)
            assert list(proxy()) == [target[k] for k in sorted(target)]
            assert key not in proxy
            raises(KeyError, getitem, proxy, key)

            # Add and test again
            target[key] = val
            assert len(proxy) == len(target)
            assert list(proxy) == sorted(target)
            assert list(proxy()) == [target[k] for k in sorted(target)]

            # Verify TypeError is raised trying to set/del via proxy
            raises(TypeError, setitem, proxy, key, val)
            raises(TypeError, delitem, proxy, key)


class test_MagicDict(ClassChecker):
    """
    Test the `ipalib.plugable.MagicDict` class.
    """
    _cls = plugable.MagicDict

    def test_class(self):
        """
        Test the `ipalib.plugable.MagicDict` class.
        """
        assert self.cls.__bases__ == (plugable.DictProxy,)
        for non_dict in ('hello', 69, object):
            raises(TypeError, self.cls, non_dict)

    def test_MagicDict(self):
        """
        Test container emulation of `ipalib.plugable.MagicDict` class.
        """
        cnt = 10
        keys = []
        d = dict()
        dictproxy = self.cls(d)
        for i in xrange(cnt):
            key = 'key_%d' % i
            val = 'val_%d' % i
            keys.append(key)

            # Test thet key does not yet exist
            assert len(dictproxy) == i
            assert key not in dictproxy
            assert not hasattr(dictproxy, key)
            raises(KeyError, getitem, dictproxy, key)
            raises(AttributeError, getattr, dictproxy, key)

            # Test that items/attributes cannot be set on dictproxy:
            raises(TypeError, setitem, dictproxy, key, val)
            raises(AttributeError, setattr, dictproxy, key, val)

            # Test that additions in d are reflected in dictproxy:
            d[key] = val
            assert len(dictproxy) == i + 1
            assert key in dictproxy
            assert hasattr(dictproxy, key)
            assert dictproxy[key] is val
            assert read_only(dictproxy, key) is val

        # Test __iter__
        assert list(dictproxy) == keys

        for key in keys:
            # Test that items cannot be deleted through dictproxy:
            raises(TypeError, delitem, dictproxy, key)
            raises(AttributeError, delattr, dictproxy, key)

            # Test that deletions in d are reflected in dictproxy
            del d[key]
            assert len(dictproxy) == len(d)
            assert key not in dictproxy
            raises(KeyError, getitem, dictproxy, key)
            raises(AttributeError, getattr, dictproxy, key)


class test_Plugin(ClassChecker):
    """
    Test the `ipalib.plugable.Plugin` class.
    """
    _cls = plugable.Plugin

    def test_class(self):
        """
        Test the `ipalib.plugable.Plugin` class.
        """
        assert self.cls.__bases__ == (plugable.ReadOnly,)
        assert type(self.cls.api) is property

    def test_init(self):
        """
        Test the `ipalib.plugable.Plugin.__init__` method.
        """
        o = self.cls()
        assert o.name == 'Plugin'
        assert o.module == 'ipalib.plugable'
        assert o.fullname == 'ipalib.plugable.Plugin'
        assert o.doc == inspect.getdoc(self.cls)
        class some_subclass(self.cls):
            """
            Do sub-classy things.

            Although it doesn't know how to comport itself and is not for mixed
            company, this class *is* useful as we all need a little sub-class
            now and then.

            One more paragraph.
            """
        o = some_subclass()
        assert o.name == 'some_subclass'
        assert o.module == __name__
        assert o.fullname == '%s.some_subclass' % __name__
        assert o.doc == inspect.getdoc(some_subclass)
        assert o.summary == 'Do sub-classy things.'
        class another_subclass(self.cls):
            pass
        o = another_subclass()
        assert o.doc is None
        assert o.summary == '<%s>' % o.fullname

        # Test that Plugin makes sure the subclass hasn't defined attributes
        # whose names conflict with the logger methods set in Plugin.__init__():
        class check(self.cls):
            info = 'whatever'
        e = raises(StandardError, check)
        assert str(e) == \
            "check.info attribute ('whatever') conflicts with Plugin logger"

    def test_set_api(self):
        """
        Test the `ipalib.plugable.Plugin.set_api` method.
        """
        api = 'the api instance'
        o = self.cls()
        assert o.api is None
        e = raises(AssertionError, o.set_api, None)
        assert str(e) == 'set_api() argument cannot be None'
        o.set_api(api)
        assert o.api is api
        e = raises(AssertionError, o.set_api, api)
        assert str(e) == 'set_api() can only be called once'

    def test_finalize(self):
        """
        Test the `ipalib.plugable.Plugin.finalize` method.
        """
        o = self.cls()
        assert not o.__islocked__()
        o.finalize()
        assert o.__islocked__()

    def test_call(self):
        """
        Test the `ipalib.plugable.Plugin.call` method.
        """
        o = self.cls()
        o.call('/bin/true') is None
        e = raises(errors.SubprocessError, o.call, '/bin/false')
        assert e.returncode == 1
        assert e.argv == ('/bin/false',)


def test_Registrar():
    """
    Test the `ipalib.plugable.Registrar` class
    """
    class Base1(object):
        pass
    class Base2(object):
        pass
    class Base3(object):
        pass
    class plugin1(Base1):
        pass
    class plugin2(Base2):
        pass
    class plugin3(Base3):
        pass

    # Test creation of Registrar:
    r = plugable.Registrar(Base1, Base2)

    # Test __iter__:
    assert list(r) == ['Base1', 'Base2']

    # Test __hasitem__, __getitem__:
    for base in [Base1, Base2]:
        name = base.__name__
        assert name in r
        assert r[name] is base
        magic = getattr(r, name)
        assert type(magic) is plugable.MagicDict
        assert len(magic) == 0

    # Check that TypeError is raised trying to register something that isn't
    # a class:
    p = plugin1()
    e = raises(TypeError, r, p)
    assert str(e) == 'plugin must be a class; got %r' % p

    # Check that SubclassError is raised trying to register a class that is
    # not a subclass of an allowed base:
    e = raises(errors.PluginSubclassError, r, plugin3)
    assert e.plugin is plugin3

    # Check that registration works
    r(plugin1)
    assert len(r.Base1) == 1
    assert r.Base1['plugin1'] is plugin1
    assert r.Base1.plugin1 is plugin1

    # Check that DuplicateError is raised trying to register exact class
    # again:
    e = raises(errors.PluginDuplicateError, r, plugin1)
    assert e.plugin is plugin1

    # Check that OverrideError is raised trying to register class with same
    # name and same base:
    orig1 = plugin1
    class base1_extended(Base1):
        pass
    class plugin1(base1_extended):
        pass
    e = raises(errors.PluginOverrideError, r, plugin1)
    assert e.base == 'Base1'
    assert e.name == 'plugin1'
    assert e.plugin is plugin1

    # Check that overriding works
    r(plugin1, override=True)
    assert len(r.Base1) == 1
    assert r.Base1.plugin1 is plugin1
    assert r.Base1.plugin1 is not orig1

    # Check that MissingOverrideError is raised trying to override a name
    # not yet registerd:
    e = raises(errors.PluginMissingOverrideError, r, plugin2, override=True)
    assert e.base == 'Base2'
    assert e.name == 'plugin2'
    assert e.plugin is plugin2

    # Test that another plugin can be registered:
    assert len(r.Base2) == 0
    r(plugin2)
    assert len(r.Base2) == 1
    assert r.Base2.plugin2 is plugin2

    # Setup to test more registration:
    class plugin1a(Base1):
        pass
    r(plugin1a)

    class plugin1b(Base1):
        pass
    r(plugin1b)

    class plugin2a(Base2):
        pass
    r(plugin2a)

    class plugin2b(Base2):
        pass
    r(plugin2b)

    # Again test __hasitem__, __getitem__:
    for base in [Base1, Base2]:
        name = base.__name__
        assert name in r
        assert r[name] is base
        magic = getattr(r, name)
        assert len(magic) == 3
        for key in magic:
            klass = magic[key]
            assert getattr(magic, key) is klass
            assert issubclass(klass, base)


class test_API(ClassChecker):
    """
    Test the `ipalib.plugable.API` class.
    """

    _cls = plugable.API

    def test_API(self):
        """
        Test the `ipalib.plugable.API` class.
        """
        assert issubclass(plugable.API, plugable.ReadOnly)

        # Setup the test bases, create the API:
        class base0(plugable.Plugin):
            def method(self, n):
                return n

        class base1(plugable.Plugin):
            def method(self, n):
                return n + 1

        api = plugable.API(base0, base1)
        api.env.mode = 'unit_test'
        api.env.in_tree = True
        r = api.register
        assert isinstance(r, plugable.Registrar)
        assert read_only(api, 'register') is r

        class base0_plugin0(base0):
            pass
        r(base0_plugin0)

        class base0_plugin1(base0):
            pass
        r(base0_plugin1)

        class base0_plugin2(base0):
            pass
        r(base0_plugin2)

        class base1_plugin0(base1):
            pass
        r(base1_plugin0)

        class base1_plugin1(base1):
            pass
        r(base1_plugin1)

        class base1_plugin2(base1):
            pass
        r(base1_plugin2)

        # Test API instance:
        assert api.isdone('bootstrap') is False
        assert api.isdone('finalize') is False
        api.finalize()
        assert api.isdone('bootstrap') is True
        assert api.isdone('finalize') is True

        def get_base_name(b):
            return 'base%d' % b


        def get_plugin_name(b, p):
            return 'base%d_plugin%d' % (b, p)

        for b in xrange(2):
            base_name = get_base_name(b)
            base = locals()[base_name]
            ns = getattr(api, base_name)
            assert isinstance(ns, plugable.NameSpace)
            assert read_only(api, base_name) is ns
            assert len(ns) == 3
            for p in xrange(3):
                plugin_name = get_plugin_name(b, p)
                plugin = locals()[plugin_name]
                inst = ns[plugin_name]
                assert isinstance(inst, base)
                assert isinstance(inst, plugin)
                assert inst.name == plugin_name
                assert read_only(ns, plugin_name) is inst
                assert inst.method(7) == 7 + b

        # Test that calling finilize again raises AssertionError:
        e = raises(StandardError, api.finalize)
        assert str(e) == 'API.finalize() already called', str(e)

    def test_bootstrap(self):
        """
        Test the `ipalib.plugable.API.bootstrap` method.
        """
        (o, home) = create_test_api()
        assert o.env._isdone('_bootstrap') is False
        assert o.env._isdone('_finalize_core') is False
        assert o.isdone('bootstrap') is False
        o.bootstrap(my_test_override='Hello, world!')
        assert o.isdone('bootstrap') is True
        assert o.env._isdone('_bootstrap') is True
        assert o.env._isdone('_finalize_core') is True
        assert o.env.my_test_override == 'Hello, world!'
        e = raises(StandardError, o.bootstrap)
        assert str(e) == 'API.bootstrap() already called'

    def test_load_plugins(self):
        """
        Test the `ipalib.plugable.API.load_plugins` method.
        """
        (o, home) = create_test_api()
        assert o.isdone('bootstrap') is False
        assert o.isdone('load_plugins') is False
        o.load_plugins()
        assert o.isdone('bootstrap') is True
        assert o.isdone('load_plugins') is True
        e = raises(StandardError, o.load_plugins)
        assert str(e) == 'API.load_plugins() already called'