1
# Copyright (C) 2006, 2007 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
from StringIO import StringIO
20
from bzrlib import errors
21
from bzrlib.progress import (
29
from bzrlib.tests import TestCase
33
def __init__(self, top):
40
class _TTYStringIO(StringIO):
41
"""A helper class which makes a StringIO look like a terminal"""
47
class _NonTTYStringIO(StringIO):
48
"""Helper that implements isatty() but returns False"""
54
class TestProgress(TestCase):
57
self.top = ChildProgress(_stack=FakeStack(q))
59
def test_propogation(self):
60
self.top.update('foobles', 1, 2)
61
self.assertEqual(self.top.message, 'foobles')
62
self.assertEqual(self.top.current, 1)
63
self.assertEqual(self.top.total, 2)
64
self.assertEqual(self.top.child_fraction, 0)
65
child = ChildProgress(_stack=FakeStack(self.top))
66
child.update('baubles', 2, 4)
67
self.assertEqual(self.top.message, 'foobles')
68
self.assertEqual(self.top.current, 1)
69
self.assertEqual(self.top.total, 2)
70
self.assertEqual(self.top.child_fraction, 0.5)
71
grandchild = ChildProgress(_stack=FakeStack(child))
72
grandchild.update('barbells', 1, 2)
73
self.assertEqual(self.top.child_fraction, 0.625)
74
self.assertEqual(child.child_fraction, 0.5)
75
child.update('baubles', 3, 4)
76
self.assertEqual(child.child_fraction, 0)
77
self.assertEqual(self.top.child_fraction, 0.75)
78
grandchild.update('barbells', 1, 2)
79
self.assertEqual(self.top.child_fraction, 0.875)
80
grandchild.update('barbells', 2, 2)
81
self.assertEqual(self.top.child_fraction, 1)
82
child.update('baubles', 4, 4)
83
self.assertEqual(self.top.child_fraction, 1)
85
grandchild.update('barbells', 2, 2)
86
self.assertEqual(self.top.child_fraction, 1)
88
def test_implementations(self):
89
for implementation in (TTYProgressBar, DotsProgressBar,
91
self.check_parent_handling(implementation)
93
def check_parent_handling(self, parentclass):
94
top = parentclass(to_file=StringIO())
95
top.update('foobles', 1, 2)
96
child = ChildProgress(_stack=FakeStack(top))
97
child.update('baubles', 4, 4)
98
top.update('lala', 2, 2)
99
child.update('baubles', 4, 4)
101
def test_stacking(self):
102
self.check_stack(TTYProgressBar, ChildProgress)
103
self.check_stack(DotsProgressBar, ChildProgress)
104
self.check_stack(DummyProgress, DummyProgress)
106
def check_stack(self, parent_class, child_class):
107
stack = ProgressBarStack(klass=parent_class, to_file=StringIO())
108
parent = stack.get_nested()
110
self.assertIs(parent.__class__, parent_class)
111
child = stack.get_nested()
113
self.assertIs(child.__class__, child_class)
119
def test_throttling(self):
120
pb = InstrumentedProgress(to_file=StringIO())
121
# instantaneous updates should be squelched
122
pb.update('me', 1, 1)
123
self.assertTrue(pb.always_throttled)
124
pb = InstrumentedProgress(to_file=StringIO())
125
# It's like an instant sleep(1)!
127
# Updates after a second should not be squelched
128
pb.update('me', 1, 1)
129
self.assertFalse(pb.always_throttled)
131
def test_clear(self):
133
pb = TTYProgressBar(to_file=sio, show_eta=False)
134
pb.width = 20 # Just make it easier to test
135
# This should not output anything
137
# These two should not be displayed because
139
pb.update('foo', 1, 3)
140
pb.update('bar', 2, 3)
141
# So pb.clear() has nothing to do
144
# Make sure the next update isn't throttled
146
pb.update('baz', 3, 3)
149
self.assertEqual('\r[=========] baz 3/3'
153
def test_no_eta(self):
154
# An old version of the progress bar would
155
# store every update if show_eta was false
156
# because the eta routine was where it was
158
pb = InstrumentedProgress(to_file=StringIO(), show_eta=False)
159
# Just make sure this first few are throttled
162
# These messages are throttled, and don't contribute
163
for count in xrange(100):
164
pb.update('x', count, 300)
165
self.assertEqual(0, len(pb.last_updates))
170
# These happen too fast, so only one gets through
171
for count in xrange(100):
172
pb.update('x', count+100, 200)
173
self.assertEqual(1, len(pb.last_updates))
177
# But all of these go through, don't let the
178
# last_update list grow without bound
179
for count in xrange(100):
180
pb.update('x', count+100, 200)
182
self.assertEqual(pb._max_last_updates, len(pb.last_updates))
185
class TestProgressTypes(TestCase):
186
"""Test that the right ProgressBar gets instantiated at the right time."""
188
def get_nested(self, outf, term, env_progress=None):
189
"""Setup so that ProgressBar thinks we are in the supplied terminal."""
190
orig_term = os.environ.get('TERM')
191
orig_progress = os.environ.get('BZR_PROGRESS_BAR')
192
os.environ['TERM'] = term
193
if env_progress is not None:
194
os.environ['BZR_PROGRESS_BAR'] = env_progress
195
elif orig_progress is not None:
196
del os.environ['BZR_PROGRESS_BAR']
199
if orig_term is None:
200
del os.environ['TERM']
202
os.environ['TERM'] = orig_term
203
# We may have never created BZR_PROGRESS_BAR
204
# So we can't just delete like we can 'TERM' (which is always set)
205
if orig_progress is None:
206
if 'BZR_PROGRESS_BAR' in os.environ:
207
del os.environ['BZR_PROGRESS_BAR']
209
os.environ['BZR_PROGRESS_BAR'] = orig_progress
211
self.addCleanup(reset)
213
stack = ProgressBarStack(to_file=outf)
214
pb = stack.get_nested()
215
pb.start_time -= 1 # Make sure it is ready to write
216
pb.width = 20 # And it is of reasonable size
219
def test_tty_progress(self):
220
# Make sure the ProgressBarStack thinks it is
221
# writing out to a terminal, and thus uses a TTYProgressBar
223
pb = self.get_nested(out, 'xterm')
224
self.assertIsInstance(pb, TTYProgressBar)
226
pb.update('foo', 1, 2)
227
pb.update('bar', 2, 2)
231
self.assertEqual('\r/ [==== ] foo 1/2'
232
'\r- [=======] bar 2/2'
236
def test_noninteractive_progress(self):
237
out = _NonTTYStringIO()
238
pb = self.get_nested(out, 'xterm')
239
self.assertIsInstance(pb, DummyProgress)
241
pb.update('foo', 1, 2)
242
pb.update('bar', 2, 2)
245
self.assertEqual('', out.getvalue())
247
def test_dots_progress(self):
248
# make sure we get the right progress bar when not on a terminal
249
out = _NonTTYStringIO()
250
pb = self.get_nested(out, 'xterm', 'dots')
251
self.assertIsInstance(pb, DotsProgressBar)
253
pb.update('foo', 1, 2)
254
pb.update('bar', 2, 2)
257
self.assertEqual('foo: .'
262
def test_no_isatty_progress(self):
263
# Make sure ProgressBarStack handles a plain StringIO()
265
out = cStringIO.StringIO()
266
pb = self.get_nested(out, 'xterm')
268
self.assertIsInstance(pb, DummyProgress)
270
def test_dumb_progress(self):
271
# using a terminal that can't do cursor movement
273
pb = self.get_nested(out, 'dumb')
275
self.assertIsInstance(pb, DummyProgress)
277
def test_progress_env_tty(self):
278
# The environ variable BZR_PROGRESS_BAR controls what type of
279
# progress bar we will get, even if it wouldn't usually be that type
282
# Usually, this would be a DotsProgressBar
283
out = cStringIO.StringIO()
284
pb = self.get_nested(out, 'dumb', 'tty')
286
# Even though we are not a tty, the env_var will override
287
self.assertIsInstance(pb, TTYProgressBar)
289
def test_progress_env_none(self):
290
# Even though we are in a valid tty, no progress
292
pb = self.get_nested(out, 'xterm', 'none')
294
self.assertIsInstance(pb, DummyProgress)
296
def test_progress_env_invalid(self):
298
self.assertRaises(errors.InvalidProgressBarType, self.get_nested,
299
out, 'xterm', 'nonexistant')