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  • Committer: Robert Collins
  • Date: 2005-10-19 10:11:57 UTC
  • mfrom: (1185.16.78)
  • mto: This revision was merged to the branch mainline in revision 1470.
  • Revision ID: robertc@robertcollins.net-20051019101157-17438d311e746b4f
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breezy/tests/test_progress.py
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# Copyright (C) 2006-2011 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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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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17
 
import codecs
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import io
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20
 
from ..progress import (
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    ProgressTask,
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    )
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from ..ui.text import (
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    TextProgressView,
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    )
26
 
 
27
 
from .. import (
28
 
    tests,
29
 
    )
30
 
from . import (
31
 
    ui_testing,
32
 
    )
33
 
 
34
 
 
35
 
class TestTextProgressView(tests.TestCase):
36
 
    """Tests for text display of progress bars.
37
 
 
38
 
    These try to exercise the progressview independently of its construction,
39
 
    which is arranged by the TextUIFactory.
40
 
    """
41
 
    # The ProgressTask now connects directly to the ProgressView, so we can
42
 
    # check them independently of the factory or of the determination of what
43
 
    # view to use.
44
 
 
45
 
    def make_view_only(self, out, width=79):
46
 
        view = TextProgressView(out)
47
 
        view._avail_width = lambda: width
48
 
        return view
49
 
 
50
 
    def make_view(self):
51
 
        out = ui_testing.StringIOWithEncoding()
52
 
        return out, self.make_view_only(out)
53
 
 
54
 
    def make_task(self, parent_task, view, msg, curr, total):
55
 
        # would normally be done by UIFactory; is done here so that we don't
56
 
        # have to have one.
57
 
        task = ProgressTask(parent_task, progress_view=view)
58
 
        task.msg = msg
59
 
        task.current_cnt = curr
60
 
        task.total_cnt = total
61
 
        return task
62
 
 
63
 
    def test_clear(self):
64
 
        # <https://bugs.launchpad.net/bzr/+bug/611127> clear must actually
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        # send spaces to clear the line
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        out, view = self.make_view()
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        task = self.make_task(None, view, 'reticulating splines', 5, 20)
68
 
        view.show_progress(task)
69
 
        self.assertEqual(
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            '\r/ reticulating splines 5/20                                                    \r', out.getvalue())
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        view.clear()
72
 
        self.assertEqual(
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            '\r/ reticulating splines 5/20                                                    \r' +
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            '\r' + 79 * ' ' + '\r',
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            out.getvalue())
76
 
 
77
 
    def test_render_progress_no_bar(self):
78
 
        """The default view now has a spinner but no bar."""
79
 
        out, view = self.make_view()
80
 
        # view.enable_bar = False
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        task = self.make_task(None, view, 'reticulating splines', 5, 20)
82
 
        view.show_progress(task)
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        self.assertEqual(
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            '\r/ reticulating splines 5/20                                                    \r', out.getvalue())
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86
 
    def test_render_progress_easy(self):
87
 
        """Just one task and one quarter done"""
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        out, view = self.make_view()
89
 
        view.enable_bar = True
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        task = self.make_task(None, view, 'reticulating splines', 5, 20)
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        view.show_progress(task)
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        self.assertEqual(
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            '\r[####/               ] reticulating splines 5/20                               \r', out.getvalue())
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95
 
    def test_render_progress_nested(self):
96
 
        """Tasks proportionally contribute to overall progress"""
97
 
        out, view = self.make_view()
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        task = self.make_task(None, view, 'reticulating splines', 0, 2)
99
 
        task2 = self.make_task(task, view, 'stage2', 1, 2)
100
 
        view.show_progress(task2)
101
 
        view.enable_bar = True
102
 
        # so we're in the first half of the main task, and half way through
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        # that
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        self.assertEqual(
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            '[####-               ] reticulating splines:stage2 1/2                         ', view._render_line())
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        # if the nested task is complete, then we're all the way through the
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        # first half of the overall work
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        task2.update('stage2', 2, 2)
109
 
        self.assertEqual(
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            '[#########\\          ] reticulating splines:stage2 2/2                         ', view._render_line())
111
 
 
112
 
    def test_render_progress_sub_nested(self):
113
 
        """Intermediate tasks don't mess up calculation."""
114
 
        out, view = self.make_view()
115
 
        view.enable_bar = True
116
 
        task_a = ProgressTask(None, progress_view=view)
117
 
        task_a.update('a', 0, 2)
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        task_b = ProgressTask(task_a, progress_view=view)
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        task_b.update('b')
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        task_c = ProgressTask(task_b, progress_view=view)
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        task_c.update('c', 1, 2)
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        # the top-level task is in its first half; the middle one has no
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        # progress indication, just a label; and the bottom one is half done,
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        # so the overall fraction is 1/4
125
 
        self.assertEqual(
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            '[####|               ] a:b:c 1/2                                               ', view._render_line())
127
 
 
128
 
    def test_render_truncated(self):
129
 
        # when the bar is too long for the terminal, we prefer not to truncate
130
 
        # the counters because they might be interesting, and because
131
 
        # truncating the numbers might be misleading
132
 
        out, view = self.make_view()
133
 
        task_a = ProgressTask(None, progress_view=view)
134
 
        task_a.update('start_' + 'a' * 200 + '_end', 2000, 5000)
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        line = view._render_line()
136
 
        self.assertEqual(
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            '- start_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.. 2000/5000',
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            line)
139
 
        self.assertEqual(len(line), 79)
140
 
 
141
 
    def test_render_with_activity(self):
142
 
        # if the progress view has activity, it's shown before the spinner
143
 
        out, view = self.make_view()
144
 
        task_a = ProgressTask(None, progress_view=view)
145
 
        view._last_transport_msg = '   123kB   100kB/s '
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        line = view._render_line()
147
 
        self.assertEqual(
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            '   123kB   100kB/s /                                                           ',
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            line)
150
 
        self.assertEqual(len(line), 79)
151
 
 
152
 
        task_a.update('start_' + 'a' * 200 + '_end', 2000, 5000)
153
 
        view._last_transport_msg = '   123kB   100kB/s '
154
 
        line = view._render_line()
155
 
        self.assertEqual(
156
 
            '   123kB   100kB/s \\ start_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.. 2000/5000',
157
 
            line)
158
 
        self.assertEqual(len(line), 79)
159
 
 
160
 
    def test_render_progress_unicode_enc_utf8(self):
161
 
        out = ui_testing.StringIOWithEncoding()
162
 
        out.encoding = "utf-8"
163
 
        view = self.make_view_only(out, 20)
164
 
        task = self.make_task(None, view, u"\xa7", 0, 1)
165
 
        view.show_progress(task)
166
 
        self.assertEqual(u'\r/ \xa7 0/1            \r', out.getvalue())
167
 
 
168
 
    def test_render_progress_unicode_enc_missing(self):
169
 
        out = codecs.getwriter("ascii")(io.BytesIO())
170
 
        self.assertRaises(AttributeError, getattr, out, "encoding")
171
 
        view = self.make_view_only(out, 20)
172
 
        task = self.make_task(None, view, u"\xa7", 0, 1)
173
 
        view.show_progress(task)
174
 
        self.assertEqual(b'\r/ ? 0/1             \r', out.getvalue())
175
 
 
176
 
    def test_render_progress_unicode_enc_none(self):
177
 
        out = ui_testing.StringIOWithEncoding()
178
 
        out.encoding = None
179
 
        view = self.make_view_only(out, 20)
180
 
        task = self.make_task(None, view, u"\xa7", 0, 1)
181
 
        view.show_progress(task)
182
 
        self.assertEqual(u'\r/ ? 0/1             \r', out.getvalue())