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# Copyright (C) 2006-2010 Canonical Ltd
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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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# 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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# 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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from StringIO import StringIO
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from bzrlib import errors
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from bzrlib.progress import (
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from bzrlib.symbol_versioning import (
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from bzrlib.tests import TestCase
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from bzrlib.ui.text import (
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class _TTYStringIO(StringIO):
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"""A helper class which makes a StringIO look like a terminal"""
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class _NonTTYStringIO(StringIO):
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"""Helper that implements isatty() but returns False"""
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class TestTextProgressView(TestCase):
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"""Tests for text display of progress bars.
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These try to exercise the progressview independently of its construction,
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which is arranged by the TextUIFactory.
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# The ProgressTask now connects directly to the ProgressView, so we can
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# check them independently of the factory or of the determination of what
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view = TextProgressView(out)
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view._avail_width = lambda: 79
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def make_task(self, parent_task, view, msg, curr, total):
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# would normally be done by UIFactory; is done here so that we don't
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task = ProgressTask(parent_task, progress_view=view)
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task.current_cnt = curr
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task.total_cnt = total
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# <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)
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view.show_progress(task)
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'\r/ reticulating splines 5/20 \r'
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'\r/ reticulating splines 5/20 \r'
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+ '\r' + 79 * ' ' + '\r',
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def test_render_progress_no_bar(self):
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"""The default view now has a spinner but no bar."""
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out, view = self.make_view()
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# view.enable_bar = False
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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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'\r/ reticulating splines 5/20 \r'
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def test_render_progress_easy(self):
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"""Just one task and one quarter done"""
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out, view = self.make_view()
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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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'\r[####/ ] reticulating splines 5/20 \r'
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def test_render_progress_nested(self):
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"""Tasks proportionally contribute to overall progress"""
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out, view = self.make_view()
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task = self.make_task(None, view, 'reticulating splines', 0, 2)
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task2 = self.make_task(task, view, 'stage2', 1, 2)
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view.show_progress(task2)
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view.enable_bar = True
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# so we're in the first half of the main task, and half way through
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'[####- ] reticulating splines:stage2 1/2 '
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, 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)
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'[#########\ ] reticulating splines:stage2 2/2 '
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, view._render_line())
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def test_render_progress_sub_nested(self):
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"""Intermediate tasks don't mess up calculation."""
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out, view = self.make_view()
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view.enable_bar = True
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task_a = ProgressTask(None, progress_view=view)
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task_a.update('a', 0, 2)
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task_b = ProgressTask(task_a, progress_view=view)
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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
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'[####| ] a:b:c 1/2 '
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, view._render_line())
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def test_render_truncated(self):
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# when the bar is too long for the terminal, we prefer not to truncate
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# the counters because they might be interesting, and because
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# truncating the numbers might be misleading
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out, view = self.make_view()
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task_a = ProgressTask(None, progress_view=view)
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task_a.update('start_' + 'a' * 200 + '_end', 2000, 5000)
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line = view._render_line()
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'- start_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.. 2000/5000',
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self.assertEqual(len(line), 79)
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def test_render_with_activity(self):
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# if the progress view has activity, it's shown before the spinner
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out, view = self.make_view()
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task_a = ProgressTask(None, progress_view=view)
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view._last_transport_msg = ' 123kB 100kB/s '
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line = view._render_line()
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self.assertEqual(len(line), 79)
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task_a.update('start_' + 'a' * 200 + '_end', 2000, 5000)
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view._last_transport_msg = ' 123kB 100kB/s '
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line = view._render_line()
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' 123kB 100kB/s \\ start_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.. 2000/5000',
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self.assertEqual(len(line), 79)