← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/tests/test_ui.py

  • Committer: Danny van Heumen
  • Date: 2010-03-09 21:42:11 UTC
  • mto: (4634.139.5 2.0)
  • mto: This revision was merged to the branch mainline in revision 5160.
  • Revision ID: danny@dannyvanheumen.nl-20100309214211-iqh42x6qcikgd9p3
Reverted now-useless TODO list.

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/tests/test_ui.py
1
 
# Copyright (C) 2005 by Canonical Ltd
 
1
# Copyright (C) 2005, 2008, 2009 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
12
12
#
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
 
# 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
16
16
 
17
17
"""Tests for the bzrlib ui
18
18
"""
21
21
from StringIO import StringIO
22
22
import re
23
23
import sys
24
 
 
25
 
import bzrlib
26
 
import bzrlib.errors as errors
27
 
from bzrlib.progress import TTYProgressBar, ProgressBarStack
28
 
from bzrlib.tests import TestCase
29
 
from bzrlib.tests.test_progress import _TTYStringIO
30
 
from bzrlib.ui import SilentUIFactory
31
 
from bzrlib.ui.text import TextUIFactory
32
 
 
33
 
 
34
 
class UITests(TestCase):
35
 
 
36
 
    def test_silent_factory(self):
37
 
        ui = SilentUIFactory()
38
 
        pb = ui.nested_progress_bar()
39
 
        try:
40
 
            # TODO: Test that there is no output from SilentUIFactory
41
 
    
42
 
            self.assertEquals(ui.get_password(), None)
43
 
            self.assertEquals(ui.get_password(u'Hello There \u1234 %(user)s',
44
 
                                              user=u'some\u1234')
45
 
                             , None)
46
 
        finally:
47
 
            pb.finished()
48
 
 
49
 
    def test_text_factory(self):
50
 
        ui = TextUIFactory()
51
 
        pb = ui.nested_progress_bar()
52
 
        pb.finished()
53
 
        # TODO: Test the output from TextUIFactory, perhaps by overriding sys.stdout
54
 
 
55
 
        # Unfortunately we can't actually test the ui.get_password() because 
56
 
        # that would actually prompt the user for a password during the test suite
57
 
        # This has been tested manually with both LANG=en_US.utf-8 and LANG=C
58
 
        # print
59
 
        # self.assertEquals(ui.get_password(u"%(user)s please type 'bogus'",
60
 
        #                                   user=u'some\u1234')
61
 
        #                  , 'bogus')
62
 
 
 
24
import time
 
25
 
 
26
from bzrlib import (
 
27
    errors,
 
28
    tests,
 
29
    ui as _mod_ui,
 
30
    )
 
31
from bzrlib.symbol_versioning import (
 
32
    deprecated_in,
 
33
    )
 
34
from bzrlib.tests import (
 
35
    TestCase,
 
36
    TestUIFactory,
 
37
    StringIOWrapper,
 
38
    )
 
39
from bzrlib.tests.test_progress import (
 
40
    _NonTTYStringIO,
 
41
    _TTYStringIO,
 
42
    )
 
43
from bzrlib.ui import (
 
44
    CannedInputUIFactory,
 
45
    CLIUIFactory,
 
46
    SilentUIFactory,
 
47
    UIFactory,
 
48
    make_ui_for_terminal,
 
49
    )
 
50
from bzrlib.ui.text import (
 
51
    NullProgressView,
 
52
    TextProgressView,
 
53
    TextUIFactory,
 
54
    )
 
55
 
 
56
 
 
57
class UITests(tests.TestCase):
 
58
 
 
59
    def test_text_factory_ascii_password(self):
 
60
        ui = tests.TestUIFactory(stdin='secret\n',
 
61
                                 stdout=tests.StringIOWrapper(),
 
62
                                 stderr=tests.StringIOWrapper())
 
63
        pb = ui.nested_progress_bar()
 
64
        try:
 
65
            self.assertEqual('secret',
 
66
                             self.apply_redirected(ui.stdin, ui.stdout,
 
67
                                                   ui.stderr,
 
68
                                                   ui.get_password))
 
69
            # ': ' is appended to prompt
 
70
            self.assertEqual(': ', ui.stderr.getvalue())
 
71
            self.assertEqual('', ui.stdout.readline())
 
72
            # stdin should be empty
 
73
            self.assertEqual('', ui.stdin.readline())
 
74
        finally:
 
75
            pb.finished()
 
76
 
 
77
    def test_text_factory_utf8_password(self):
 
78
        """Test an utf8 password.
 
79
 
 
80
        We can't predict what encoding users will have for stdin, so we force
 
81
        it to utf8 to test that we transport the password correctly.
 
82
        """
 
83
        ui = tests.TestUIFactory(stdin=u'baz\u1234'.encode('utf8'),
 
84
                                 stdout=tests.StringIOWrapper(),
 
85
                                 stderr=tests.StringIOWrapper())
 
86
        ui.stderr.encoding = ui.stdout.encoding = ui.stdin.encoding = 'utf8'
 
87
        pb = ui.nested_progress_bar()
 
88
        try:
 
89
            password = self.apply_redirected(ui.stdin, ui.stdout, ui.stderr,
 
90
                                             ui.get_password,
 
91
                                             u'Hello \u1234 %(user)s',
 
92
                                             user=u'some\u1234')
 
93
            # We use StringIO objects, we need to decode them
 
94
            self.assertEqual(u'baz\u1234', password.decode('utf8'))
 
95
            self.assertEqual(u'Hello \u1234 some\u1234: ',
 
96
                             ui.stderr.getvalue().decode('utf8'))
 
97
            # stdin and stdout should be empty
 
98
            self.assertEqual('', ui.stdin.readline())
 
99
            self.assertEqual('', ui.stdout.readline())
 
100
        finally:
 
101
            pb.finished()
 
102
 
 
103
    def test_progress_construction(self):
 
104
        """TextUIFactory constructs the right progress view.
 
105
        """
 
106
        for (file_class, term, pb, expected_pb_class) in (
 
107
            # on an xterm, either use them or not as the user requests,
 
108
            # otherwise default on
 
109
            (_TTYStringIO, 'xterm', 'none', NullProgressView),
 
110
            (_TTYStringIO, 'xterm', 'text', TextProgressView),
 
111
            (_TTYStringIO, 'xterm', None, TextProgressView),
 
112
            # on a dumb terminal, again if there's explicit configuration do
 
113
            # it, otherwise default off
 
114
            (_TTYStringIO, 'dumb', 'none', NullProgressView),
 
115
            (_TTYStringIO, 'dumb', 'text', TextProgressView),
 
116
            (_TTYStringIO, 'dumb', None, NullProgressView),
 
117
            # on a non-tty terminal, it's null regardless of $TERM
 
118
            (StringIO, 'xterm', None, NullProgressView),
 
119
            (StringIO, 'dumb', None, NullProgressView),
 
120
            # however, it can still be forced on
 
121
            (StringIO, 'dumb', 'text', TextProgressView),
 
122
            ):
 
123
            os.environ['TERM'] = term
 
124
            if pb is None:
 
125
                if 'BZR_PROGRESS_BAR' in os.environ:
 
126
                    del os.environ['BZR_PROGRESS_BAR']
 
127
            else:
 
128
                os.environ['BZR_PROGRESS_BAR'] = pb
 
129
            stdin = file_class('')
 
130
            stderr = file_class()
 
131
            stdout = file_class()
 
132
            uif = make_ui_for_terminal(stdin, stdout, stderr)
 
133
            self.assertIsInstance(uif, TextUIFactory,
 
134
                "TERM=%s BZR_PROGRESS_BAR=%s uif=%r" % (term, pb, uif,))
 
135
            self.assertIsInstance(uif.make_progress_view(),
 
136
                expected_pb_class,
 
137
                "TERM=%s BZR_PROGRESS_BAR=%s uif=%r" % (term, pb, uif,))
 
138
 
 
139
    def test_text_ui_non_terminal(self):
 
140
        """Even on non-ttys, make_ui_for_terminal gives a text ui."""
 
141
        stdin = _NonTTYStringIO('')
 
142
        stderr = _NonTTYStringIO()
 
143
        stdout = _NonTTYStringIO()
 
144
        for term_type in ['dumb', None, 'xterm']:
 
145
            if term_type is None:
 
146
                del os.environ['TERM']
 
147
            else:
 
148
                os.environ['TERM'] = term_type
 
149
            uif = make_ui_for_terminal(stdin, stdout, stderr)
 
150
            self.assertIsInstance(uif, TextUIFactory,
 
151
                'TERM=%r' % (term_type,))
63
152
 
64
153
    def test_progress_note(self):
65
154
        stderr = StringIO()
66
155
        stdout = StringIO()
67
 
        ui_factory = TextUIFactory(bar_type=TTYProgressBar)
 
156
        ui_factory = TextUIFactory(stdin=StringIO(''),
 
157
            stderr=stderr,
 
158
            stdout=stdout)
68
159
        pb = ui_factory.nested_progress_bar()
69
160
        try:
70
 
            pb.to_messages_file = stdout
71
 
            ui_factory._progress_bar_stack.bottom().to_file = stderr
72
161
            result = pb.note('t')
73
162
            self.assertEqual(None, result)
74
163
            self.assertEqual("t\n", stdout.getvalue())
75
164
            # Since there was no update() call, there should be no clear() call
76
 
            self.failIf(re.search(r'^\r {10,}\r$', stderr.getvalue()) is not None,
 
165
            self.failIf(re.search(r'^\r {10,}\r$',
 
166
                                  stderr.getvalue()) is not None,
77
167
                        'We cleared the stderr without anything to put there')
78
168
        finally:
79
169
            pb.finished()
80
170
 
81
171
    def test_progress_note_clears(self):
82
 
        stderr = StringIO()
83
 
        stdout = StringIO()
84
 
        # The PQM redirects the output to a file, so it
85
 
        # defaults to creating a Dots progress bar. we
86
 
        # need to force it to believe we are a TTY
87
 
        ui_factory = TextUIFactory(bar_type=TTYProgressBar)
 
172
        stderr = _TTYStringIO()
 
173
        stdout = _TTYStringIO()
 
174
        # so that we get a TextProgressBar
 
175
        os.environ['TERM'] = 'xterm'
 
176
        ui_factory = TextUIFactory(
 
177
            stdin=StringIO(''),
 
178
            stdout=stdout, stderr=stderr)
 
179
        self.assertIsInstance(ui_factory._progress_view,
 
180
            TextProgressView)
88
181
        pb = ui_factory.nested_progress_bar()
89
182
        try:
90
 
            pb.to_messages_file = stdout
91
 
            ui_factory._progress_bar_stack.bottom().to_file = stderr
92
183
            # Create a progress update that isn't throttled
93
 
            pb.start_time -= 10
94
184
            pb.update('x', 1, 1)
95
185
            result = pb.note('t')
96
186
            self.assertEqual(None, result)
104
194
 
105
195
    def test_progress_nested(self):
106
196
        # test factory based nested and popping.
107
 
        ui = TextUIFactory()
 
197
        ui = TextUIFactory(None, None, None)
108
198
        pb1 = ui.nested_progress_bar()
109
199
        pb2 = ui.nested_progress_bar()
110
 
        self.assertRaises(errors.MissingProgressBarFinish, pb1.finished)
 
200
        # You do get a warning if the outermost progress bar wasn't finished
 
201
        # first - it's not clear if this is really useful or if it should just
 
202
        # become orphaned -- mbp 20090120
 
203
        warnings, _ = self.callCatchWarnings(pb1.finished)
 
204
        if len(warnings) != 1:
 
205
            self.fail("unexpected warnings: %r" % (warnings,))
111
206
        pb2.finished()
112
207
        pb1.finished()
113
208
 
114
 
    def test_progress_stack(self):
115
 
        # test the progress bar stack which the default text factory 
116
 
        # uses.
 
209
    def test_text_ui_get_boolean(self):
 
210
        stdin = StringIO("y\n" # True
 
211
                         "n\n" # False
 
212
                         "yes with garbage\nY\n" # True
 
213
                         "not an answer\nno\n" # False
 
214
                         "I'm sure!\nyes\n" # True
 
215
                         "NO\n" # False
 
216
                         "foo\n")
 
217
        stdout = StringIO()
117
218
        stderr = StringIO()
118
 
        stdout = StringIO()
119
 
        # make a stack, which accepts parameters like a pb.
120
 
        stack = ProgressBarStack(to_file=stderr, to_messages_file=stdout)
121
 
        # but is not one
122
 
        self.assertFalse(getattr(stack, 'note', False))
123
 
        pb1 = stack.get_nested()
124
 
        pb2 = stack.get_nested()
125
 
        self.assertRaises(errors.MissingProgressBarFinish, pb1.finished)
126
 
        pb2.finished()
127
 
        pb1.finished()
128
 
        # the text ui factory never actually removes the stack once its setup.
129
 
        # we need to be able to nest again correctly from here.
130
 
        pb1 = stack.get_nested()
131
 
        pb2 = stack.get_nested()
132
 
        self.assertRaises(errors.MissingProgressBarFinish, pb1.finished)
133
 
        pb2.finished()
134
 
        pb1.finished()
135
 
 
136
 
    def test_text_factory_setting_progress_bar(self):
137
 
        # we should be able to choose the progress bar type used.
138
 
        factory = bzrlib.ui.text.TextUIFactory(
139
 
            bar_type=bzrlib.progress.DotsProgressBar)
140
 
        bar = factory.nested_progress_bar()
141
 
        bar.finished()
142
 
        self.assertIsInstance(bar, bzrlib.progress.DotsProgressBar)
143
 
 
144
 
    def test_cli_stdin_is_default_stdin(self):
145
 
        factory = bzrlib.ui.CLIUIFactory()
146
 
        self.assertEqual(sys.stdin, factory.stdin)
147
 
 
148
 
    def assert_get_bool_acceptance_of_user_input(self, factory):
149
 
        factory.stdin = StringIO("y\nyes with garbage\nyes\nn\nnot an answer\nno\nfoo\n")
 
219
        factory = TextUIFactory(stdin, stdout, stderr)
 
220
        self.assertEqual(True, factory.get_boolean(""))
 
221
        self.assertEqual(False, factory.get_boolean(""))
 
222
        self.assertEqual(True, factory.get_boolean(""))
 
223
        self.assertEqual(False, factory.get_boolean(""))
 
224
        self.assertEqual(True, factory.get_boolean(""))
 
225
        self.assertEqual(False, factory.get_boolean(""))
 
226
        self.assertEqual("foo\n", factory.stdin.read())
 
227
        # stdin should be empty
 
228
        self.assertEqual('', factory.stdin.readline())
 
229
 
 
230
    def test_text_factory_prompt(self):
 
231
        # see <https://launchpad.net/bugs/365891>
 
232
        factory = TextUIFactory(StringIO(), StringIO(), StringIO())
 
233
        factory.prompt('foo %2e')
 
234
        self.assertEqual('', factory.stdout.getvalue())
 
235
        self.assertEqual('foo %2e', factory.stderr.getvalue())
 
236
 
 
237
    def test_text_factory_prompts_and_clears(self):
 
238
        # a get_boolean call should clear the pb before prompting
 
239
        out = _TTYStringIO()
 
240
        os.environ['TERM'] = 'xterm'
 
241
        factory = TextUIFactory(stdin=StringIO("yada\ny\n"), stdout=out, stderr=out)
 
242
        pb = factory.nested_progress_bar()
 
243
        pb.show_bar = False
 
244
        pb.show_spinner = False
 
245
        pb.show_count = False
 
246
        pb.update("foo", 0, 1)
 
247
        self.assertEqual(True,
 
248
                         self.apply_redirected(None, factory.stdout,
 
249
                                               factory.stdout,
 
250
                                               factory.get_boolean,
 
251
                                               "what do you want"))
 
252
        output = out.getvalue()
 
253
        self.assertContainsRe(factory.stdout.getvalue(),
 
254
            "foo *\r\r  *\r*")
 
255
        self.assertContainsRe(factory.stdout.getvalue(),
 
256
            r"what do you want\? \[y/n\]: what do you want\? \[y/n\]: ")
 
257
        # stdin should have been totally consumed
 
258
        self.assertEqual('', factory.stdin.readline())
 
259
 
 
260
    def test_text_tick_after_update(self):
 
261
        ui_factory = TextUIFactory(stdout=StringIO(), stderr=StringIO())
 
262
        pb = ui_factory.nested_progress_bar()
 
263
        try:
 
264
            pb.update('task', 0, 3)
 
265
            # Reset the clock, so that it actually tries to repaint itself
 
266
            ui_factory._progress_view._last_repaint = time.time() - 1.0
 
267
            pb.tick()
 
268
        finally:
 
269
            pb.finished()
 
270
 
 
271
    def test_text_ui_getusername(self):
 
272
        factory = TextUIFactory(None, None, None)
 
273
        factory.stdin = StringIO("someuser\n\n")
150
274
        factory.stdout = StringIO()
 
275
        factory.stderr = StringIO()
 
276
        factory.stdout.encoding = "utf8"
151
277
        # there is no output from the base factory
152
 
        self.assertEqual(True, factory.get_boolean(""))
153
 
        self.assertEqual(True, factory.get_boolean(""))
154
 
        self.assertEqual(False, factory.get_boolean(""))
155
 
        self.assertEqual(False, factory.get_boolean(""))
156
 
        self.assertEqual("foo\n", factory.stdin.read())
 
278
        self.assertEqual("someuser",
 
279
                         factory.get_username('Hello %(host)s', host='some'))
 
280
        self.assertEquals("Hello some: ", factory.stderr.getvalue())
 
281
        self.assertEquals('', factory.stdout.getvalue())
 
282
        self.assertEqual("", factory.get_username("Gebruiker"))
 
283
        # stdin should be empty
 
284
        self.assertEqual('', factory.stdin.readline())
 
285
 
 
286
    def test_text_ui_getusername_utf8(self):
 
287
        ui = tests.TestUIFactory(stdin=u'someuser\u1234'.encode('utf8'),
 
288
                                 stdout=tests.StringIOWrapper(),
 
289
                                 stderr=tests.StringIOWrapper())
 
290
        ui.stderr.encoding = ui.stdout.encoding = ui.stdin.encoding = "utf8"
 
291
        pb = ui.nested_progress_bar()
 
292
        try:
 
293
            # there is no output from the base factory
 
294
            username = self.apply_redirected(ui.stdin, ui.stdout, ui.stderr,
 
295
                ui.get_username, u'Hello\u1234 %(host)s', host=u'some\u1234')
 
296
            self.assertEquals(u"someuser\u1234", username.decode('utf8'))
 
297
            self.assertEquals(u"Hello\u1234 some\u1234: ",
 
298
                              ui.stderr.getvalue().decode("utf8"))
 
299
            self.assertEquals('', ui.stdout.getvalue())
 
300
        finally:
 
301
            pb.finished()
 
302
 
 
303
 
 
304
class CLIUITests(TestCase):
 
305
 
 
306
    def test_cli_factory_deprecated(self):
 
307
        uif = self.applyDeprecated(deprecated_in((1, 18, 0)),
 
308
            CLIUIFactory,
 
309
            StringIO(), StringIO(), StringIO())
 
310
        self.assertIsInstance(uif, UIFactory)
 
311
 
 
312
 
 
313
class SilentUITests(TestCase):
 
314
 
 
315
    def test_silent_factory_get_password(self):
 
316
        # A silent factory that can't do user interaction can't get a
 
317
        # password.  Possibly it should raise a more specific error but it
 
318
        # can't succeed.
 
319
        ui = SilentUIFactory()
 
320
        stdout = StringIO()
 
321
        self.assertRaises(
 
322
            NotImplementedError,
 
323
            self.apply_redirected,
 
324
            None, stdout, stdout, ui.get_password)
 
325
        # and it didn't write anything out either
 
326
        self.assertEqual('', stdout.getvalue())
157
327
 
158
328
    def test_silent_ui_getbool(self):
159
 
        factory = bzrlib.ui.SilentUIFactory()
160
 
        self.assert_get_bool_acceptance_of_user_input(factory)
161
 
 
162
 
    def test_silent_factory_prompts_silently(self):
163
 
        factory = bzrlib.ui.SilentUIFactory()
 
329
        factory = SilentUIFactory()
164
330
        stdout = StringIO()
165
 
        factory.stdin = StringIO("y\n")
166
 
        self.assertEqual(
167
 
            True,
168
 
            self.apply_redirected(
169
 
                None, stdout, stdout, factory.get_boolean, "foo")
170
 
            )
171
 
        self.assertEqual("", stdout.getvalue())
172
 
        
173
 
    def test_text_ui_getbool(self):
174
 
        factory = bzrlib.ui.text.TextUIFactory()
175
 
        self.assert_get_bool_acceptance_of_user_input(factory)
176
 
 
177
 
    def test_text_factory_prompts_and_clears(self):
178
 
        # a get_boolean call should clear the pb before prompting
179
 
        factory = bzrlib.ui.text.TextUIFactory()
180
 
        factory.stdout = _TTYStringIO()
181
 
        factory.stdin = StringIO("yada\ny\n")
182
 
        pb = self.apply_redirected(
183
 
            factory.stdin, factory.stdout, factory.stdout, factory.nested_progress_bar)
184
 
        pb.start_time = None
185
 
        self.apply_redirected(
186
 
            factory.stdin, factory.stdout, factory.stdout, pb.update, "foo", 0, 1)
187
 
        self.assertEqual(
188
 
            True,
189
 
            self.apply_redirected(
190
 
                None, factory.stdout, factory.stdout, factory.get_boolean, "what do you want")
191
 
            )
192
 
        # use a regular expression so that we don't depend on the particular
193
 
        # screen width - could also set and restore $COLUMN if that has
194
 
        # priority on all platforms, but it doesn't at present.
195
 
        output = factory.stdout.getvalue()
196
 
        if not re.match(
197
 
            "\r/ \\[    *\\] foo 0/1"
198
 
            "\r   *" 
199
 
            "\rwhat do you want\\? \\[y/n\\]:what do you want\\? \\[y/n\\]:", 
200
 
            output):
201
 
            self.fail("didn't match factory output %r, %s" % (factory, output))
 
331
        self.assertRaises(
 
332
            NotImplementedError,
 
333
            self.apply_redirected,
 
334
            None, stdout, stdout, factory.get_boolean, "foo")
 
335
 
 
336
 
 
337
class TestUIFactoryTests(TestCase):
 
338
 
 
339
    def test_test_ui_factory_progress(self):
 
340
        # there's no output; we just want to make sure this doesn't crash -
 
341
        # see https://bugs.edge.launchpad.net/bzr/+bug/408201
 
342
        ui = TestUIFactory()
 
343
        pb = ui.nested_progress_bar()
 
344
        pb.update('hello')
 
345
        pb.tick()
 
346
        pb.finished()
 
347
 
 
348
 
 
349
class CannedInputUIFactoryTests(TestCase):
 
350
    
 
351
    def test_canned_input_get_input(self):
 
352
        uif = CannedInputUIFactory([True, 'mbp', 'password'])
 
353
        self.assertEqual(uif.get_boolean('Extra cheese?'), True)
 
354
        self.assertEqual(uif.get_username('Enter your user name'), 'mbp')
 
355
        self.assertEqual(uif.get_password('Password for %(host)s', host='example.com'),
 
356
            'password')
 
357
 
 
358
 
 
359
class TestBoolFromString(tests.TestCase):
 
360
 
 
361
    def assertIsTrue(self, s, accepted_values=None):
 
362
        res = _mod_ui.bool_from_string(s, accepted_values=accepted_values)
 
363
        self.assertEquals(True, res)
 
364
 
 
365
    def assertIsFalse(self, s, accepted_values=None):
 
366
        res = _mod_ui.bool_from_string(s, accepted_values=accepted_values)
 
367
        self.assertEquals(False, res)
 
368
 
 
369
    def assertIsNone(self, s, accepted_values=None):
 
370
        res = _mod_ui.bool_from_string(s, accepted_values=accepted_values)
 
371
        self.assertIs(None, res)
 
372
 
 
373
    def test_know_valid_values(self):
 
374
        self.assertIsTrue('true')
 
375
        self.assertIsFalse('false')
 
376
        self.assertIsTrue('1')
 
377
        self.assertIsFalse('0')
 
378
        self.assertIsTrue('on')
 
379
        self.assertIsFalse('off')
 
380
        self.assertIsTrue('yes')
 
381
        self.assertIsFalse('no')
 
382
        self.assertIsTrue('y')
 
383
        self.assertIsFalse('n')
 
384
        # Also try some case variations
 
385
        self.assertIsTrue('True')
 
386
        self.assertIsFalse('False')
 
387
        self.assertIsTrue('On')
 
388
        self.assertIsFalse('Off')
 
389
        self.assertIsTrue('ON')
 
390
        self.assertIsFalse('OFF')
 
391
        self.assertIsTrue('oN')
 
392
        self.assertIsFalse('oFf')
 
393
 
 
394
    def test_invalid_values(self):
 
395
        self.assertIsNone(None)
 
396
        self.assertIsNone('doubt')
 
397
        self.assertIsNone('frue')
 
398
        self.assertIsNone('talse')
 
399
        self.assertIsNone('42')
 
400
 
 
401
    def test_provided_values(self):
 
402
        av = dict(y=True, n=False, yes=True, no=False)
 
403
        self.assertIsTrue('y', av)
 
404
        self.assertIsTrue('Y', av)
 
405
        self.assertIsTrue('Yes', av)
 
406
        self.assertIsFalse('n', av)
 
407
        self.assertIsFalse('N', av)
 
408
        self.assertIsFalse('No', av)
 
409
        self.assertIsNone('1', av)
 
410
        self.assertIsNone('0', av)
 
411
        self.assertIsNone('on', av)
 
412
        self.assertIsNone('off', av)