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# Copyright (C) 2006 by 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
from StringIO import StringIO
from bzrlib.progress import *
from bzrlib.tests import TestCase
class FakeStack:
def __init__(self, top):
self.__top = top
def top(self):
return self.__top
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()
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