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
|
# Copyright (C) 2006, 2007 Canonical Ltd
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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
import os
from StringIO import StringIO
from bzrlib import errors
from bzrlib.progress import (
DummyProgress,
ChildProgress,
TTYProgressBar,
DotsProgressBar,
ProgressBarStack,
InstrumentedProgress,
)
from bzrlib.tests import TestCase
class FakeStack:
def __init__(self, top):
self.__top = top
def top(self):
return self.__top
class _TTYStringIO(StringIO):
"""A helper class which makes a StringIO look like a terminal"""
def isatty(self):
return True
class _NonTTYStringIO(StringIO):
"""Helper that implements isatty() but returns False"""
def isatty(self):
return False
class TestProgress(TestCase):
def setUp(self):
q = DummyProgress()
self.top = ChildProgress(_stack=FakeStack(q))
def test_propogation(self):
self.top.update('foobles', 1, 2)
self.assertEqual(self.top.message, 'foobles')
self.assertEqual(self.top.current, 1)
self.assertEqual(self.top.total, 2)
self.assertEqual(self.top.child_fraction, 0)
child = ChildProgress(_stack=FakeStack(self.top))
child.update('baubles', 2, 4)
self.assertEqual(self.top.message, 'foobles')
self.assertEqual(self.top.current, 1)
self.assertEqual(self.top.total, 2)
self.assertEqual(self.top.child_fraction, 0.5)
grandchild = ChildProgress(_stack=FakeStack(child))
grandchild.update('barbells', 1, 2)
self.assertEqual(self.top.child_fraction, 0.625)
self.assertEqual(child.child_fraction, 0.5)
child.update('baubles', 3, 4)
self.assertEqual(child.child_fraction, 0)
self.assertEqual(self.top.child_fraction, 0.75)
grandchild.update('barbells', 1, 2)
self.assertEqual(self.top.child_fraction, 0.875)
grandchild.update('barbells', 2, 2)
self.assertEqual(self.top.child_fraction, 1)
child.update('baubles', 4, 4)
self.assertEqual(self.top.child_fraction, 1)
#test clamping
grandchild.update('barbells', 2, 2)
self.assertEqual(self.top.child_fraction, 1)
def test_implementations(self):
for implementation in (TTYProgressBar, DotsProgressBar,
DummyProgress):
self.check_parent_handling(implementation)
def check_parent_handling(self, parentclass):
top = parentclass(to_file=StringIO())
top.update('foobles', 1, 2)
child = ChildProgress(_stack=FakeStack(top))
child.update('baubles', 4, 4)
top.update('lala', 2, 2)
child.update('baubles', 4, 4)
def test_stacking(self):
self.check_stack(TTYProgressBar, ChildProgress)
self.check_stack(DotsProgressBar, ChildProgress)
self.check_stack(DummyProgress, DummyProgress)
def check_stack(self, parent_class, child_class):
stack = ProgressBarStack(klass=parent_class, to_file=StringIO())
parent = stack.get_nested()
try:
self.assertIs(parent.__class__, parent_class)
child = stack.get_nested()
try:
self.assertIs(child.__class__, child_class)
finally:
child.finished()
finally:
parent.finished()
def test_throttling(self):
pb = InstrumentedProgress(to_file=StringIO())
# instantaneous updates should be squelched
pb.update('me', 1, 1)
self.assertTrue(pb.always_throttled)
pb = InstrumentedProgress(to_file=StringIO())
# It's like an instant sleep(1)!
pb.start_time -= 1
# Updates after a second should not be squelched
pb.update('me', 1, 1)
self.assertFalse(pb.always_throttled)
def test_clear(self):
sio = StringIO()
pb = TTYProgressBar(to_file=sio, show_eta=False)
pb.width = 20 # Just make it easier to test
# This should not output anything
pb.clear()
# These two should not be displayed because
# of throttling
pb.update('foo', 1, 3)
pb.update('bar', 2, 3)
# So pb.clear() has nothing to do
pb.clear()
# Make sure the next update isn't throttled
pb.start_time -= 1
pb.update('baz', 3, 3)
pb.clear()
self.assertEqual('\r[=========] baz 3/3'
'\r \r',
sio.getvalue())
def test_no_eta(self):
# An old version of the progress bar would
# store every update if show_eta was false
# because the eta routine was where it was
# cleaned out
pb = InstrumentedProgress(to_file=StringIO(), show_eta=False)
# Just make sure this first few are throttled
pb.start_time += 5
# These messages are throttled, and don't contribute
for count in xrange(100):
pb.update('x', count, 300)
self.assertEqual(0, len(pb.last_updates))
# Unthrottle by time
pb.start_time -= 10
# These happen too fast, so only one gets through
for count in xrange(100):
pb.update('x', count+100, 200)
self.assertEqual(1, len(pb.last_updates))
pb.MIN_PAUSE = 0.0
# But all of these go through, don't let the
# last_update list grow without bound
for count in xrange(100):
pb.update('x', count+100, 200)
self.assertEqual(pb._max_last_updates, len(pb.last_updates))
class TestProgressTypes(TestCase):
"""Test that the right ProgressBar gets instantiated at the right time."""
def get_nested(self, outf, term, env_progress=None):
"""Setup so that ProgressBar thinks we are in the supplied terminal."""
orig_term = os.environ.get('TERM')
orig_progress = os.environ.get('BZR_PROGRESS_BAR')
os.environ['TERM'] = term
if env_progress is not None:
os.environ['BZR_PROGRESS_BAR'] = env_progress
elif orig_progress is not None:
del os.environ['BZR_PROGRESS_BAR']
def reset():
if orig_term is None:
del os.environ['TERM']
else:
os.environ['TERM'] = orig_term
# We may have never created BZR_PROGRESS_BAR
# So we can't just delete like we can 'TERM' (which is always set)
if orig_progress is None:
if 'BZR_PROGRESS_BAR' in os.environ:
del os.environ['BZR_PROGRESS_BAR']
else:
os.environ['BZR_PROGRESS_BAR'] = orig_progress
self.addCleanup(reset)
stack = ProgressBarStack(to_file=outf)
pb = stack.get_nested()
pb.start_time -= 1 # Make sure it is ready to write
pb.width = 20 # And it is of reasonable size
return pb
def test_tty_progress(self):
# Make sure the ProgressBarStack thinks it is
# writing out to a terminal, and thus uses a TTYProgressBar
out = _TTYStringIO()
pb = self.get_nested(out, 'xterm')
self.assertIsInstance(pb, TTYProgressBar)
try:
pb.update('foo', 1, 2)
pb.update('bar', 2, 2)
finally:
pb.finished()
self.assertEqual('\r/ [==== ] foo 1/2'
'\r- [=======] bar 2/2'
'\r \r',
out.getvalue())
def test_noninteractive_progress(self):
out = _NonTTYStringIO()
pb = self.get_nested(out, 'xterm')
self.assertIsInstance(pb, DummyProgress)
try:
pb.update('foo', 1, 2)
pb.update('bar', 2, 2)
finally:
pb.finished()
self.assertEqual('', out.getvalue())
def test_dots_progress(self):
# make sure we get the right progress bar when not on a terminal
out = _NonTTYStringIO()
pb = self.get_nested(out, 'xterm', 'dots')
self.assertIsInstance(pb, DotsProgressBar)
try:
pb.update('foo', 1, 2)
pb.update('bar', 2, 2)
finally:
pb.finished()
self.assertEqual('foo: .'
'\nbar: .'
'\n',
out.getvalue())
def test_no_isatty_progress(self):
# Make sure ProgressBarStack handles a plain StringIO()
import cStringIO
out = cStringIO.StringIO()
pb = self.get_nested(out, 'xterm')
pb.finished()
self.assertIsInstance(pb, DummyProgress)
def test_dumb_progress(self):
# using a terminal that can't do cursor movement
out = _TTYStringIO()
pb = self.get_nested(out, 'dumb')
pb.finished()
self.assertIsInstance(pb, DummyProgress)
def test_progress_env_tty(self):
# The environ variable BZR_PROGRESS_BAR controls what type of
# progress bar we will get, even if it wouldn't usually be that type
import cStringIO
# Usually, this would be a DotsProgressBar
out = cStringIO.StringIO()
pb = self.get_nested(out, 'dumb', 'tty')
pb.finished()
# Even though we are not a tty, the env_var will override
self.assertIsInstance(pb, TTYProgressBar)
def test_progress_env_none(self):
# Even though we are in a valid tty, no progress
out = _TTYStringIO()
pb = self.get_nested(out, 'xterm', 'none')
pb.finished()
self.assertIsInstance(pb, DummyProgress)
def test_progress_env_invalid(self):
out = _TTYStringIO()
self.assertRaises(errors.InvalidProgressBarType, self.get_nested,
out, 'xterm', 'nonexistant')
|