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# Copyright (C) 2009-2016 Lars Wirzenius
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import base64
import unittest
import obnamlib
class HookTests(unittest.TestCase):
def setUp(self):
self.hook = obnamlib.Hook()
def callback(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
def callback2(self, *args, **kwargs):
self.args2 = args
self.kwargs2 = kwargs
def test_has_no_callbacks_by_default(self):
self.assertEqual(self.hook.callbacks, [])
def test_adds_callback(self):
self.hook.add_callback(self.callback)
self.assertEqual(self.hook.callbacks, [self.callback])
def test_adds_callback_only_once(self):
self.hook.add_callback(self.callback)
self.hook.add_callback(self.callback)
self.assertEqual(self.hook.callbacks, [self.callback])
def test_adds_two_callbacks(self):
id1 = self.hook.add_callback(self.callback)
id2 = self.hook.add_callback(self.callback2,
obnamlib.Hook.DEFAULT_PRIORITY + 1)
self.assertEqual(self.hook.callbacks, [self.callback, self.callback2])
self.assertNotEqual(id1, id2)
def test_adds_callbacks_in_reverse_order(self):
id1 = self.hook.add_callback(self.callback)
id2 = self.hook.add_callback(self.callback2,
obnamlib.Hook.DEFAULT_PRIORITY - 1)
self.assertEqual(self.hook.callbacks, [self.callback2, self.callback])
self.assertNotEqual(id1, id2)
def test_calls_callback(self):
self.hook.add_callback(self.callback)
self.hook.call_callbacks('bar', kwarg='foobar')
self.assertEqual(self.args, ('bar',))
self.assertEqual(self.kwargs, {'kwarg': 'foobar'})
def test_removes_callback(self):
cb_id = self.hook.add_callback(self.callback)
self.hook.remove_callback(cb_id)
self.assertEqual(self.hook.callbacks, [])
class NeverAddsFilter(object):
def __init__(self):
self.tag = "never"
def filter_read(self, data, *args, **kwargs):
self.args = args
self.kwargs = kwargs
self.wasread = True
return data
def filter_write(self, data, *args, **kwargs):
self.args = args
self.kwargs = kwargs
self.wasread = False
return data
class Base64Filter(object):
def __init__(self):
self.tag = "base64"
def filter_read(self, data, *args, **kwargs):
self.args = args
self.kwargs = kwargs
self.wasread = True
return base64.b64decode(data)
def filter_write(self, data, *args, **kwargs):
self.args = args
self.kwargs = kwargs
self.wasread = False
return base64.b64encode(data)
class FilterHookTests(unittest.TestCase):
def setUp(self):
self.hook = obnamlib.FilterHook()
def test_add_filter_ok(self):
self.hook.add_callback(NeverAddsFilter())
def test_never_filter_no_tags(self):
self.hook.add_callback(NeverAddsFilter())
self.assertEquals(self.hook.run_filter_write("foo"), "\0foo")
def test_never_filter_clean_revert(self):
self.hook.add_callback(NeverAddsFilter())
self.assertEquals(self.hook.run_filter_read("\0foo"), "foo")
def test_base64_filter_encode(self):
self.hook.add_callback(Base64Filter())
self.assertEquals(self.hook.run_filter_write("OK"), "base64\0AE9L")
def test_base64_filter_decode(self):
self.hook.add_callback(Base64Filter())
self.assertEquals(self.hook.run_filter_read("base64\0AE9L"), "OK")
def test_no_tag_raises_error(self):
self.assertRaises(obnamlib.NoFilterTagError,
self.hook.run_filter_read,
'no NUL bytes in this string')
def test_missing_filter_raises(self):
self.assertRaises(obnamlib.MissingFilterError,
self.hook.run_filter_read, "missing\0")
def test_can_remove_filters(self):
myfilter = NeverAddsFilter()
filterid = self.hook.add_callback(myfilter)
self.hook.remove_callback(filterid)
self.assertEquals(self.hook.callbacks, [])
def test_call_callbacks_raises(self):
self.assertRaises(NotImplementedError, self.hook.call_callbacks, "")
class HookManagerTests(unittest.TestCase):
def setUp(self):
self.hooks = obnamlib.HookManager()
self.hooks.new('foo')
def callback(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
def test_has_no_tests_initially(self):
hooks = obnamlib.HookManager()
self.assertEqual(hooks.hooks, {})
def test_adds_new_hook(self):
self.assertIn('foo', self.hooks.hooks)
def test_adds_new_filter_hook(self):
self.hooks.new_filter('bar')
self.assert_('bar' in self.hooks.filters)
def test_adds_callback(self):
self.hooks.add_callback('foo', self.callback)
self.assertEqual(self.hooks.hooks['foo'].callbacks, [self.callback])
def test_removes_callback(self):
cb_id = self.hooks.add_callback('foo', self.callback)
self.hooks.remove_callback('foo', cb_id)
self.assertEqual(self.hooks.hooks['foo'].callbacks, [])
def test_calls_callbacks(self):
self.hooks.add_callback('foo', self.callback)
self.hooks.call('foo', 'bar', kwarg='foobar')
self.assertEqual(self.args, ('bar',))
self.assertEqual(self.kwargs, {'kwarg': 'foobar'})
def test_filter_write_returns_value_of_callbacks(self):
self.hooks.new_filter('bar')
self.assertEquals(self.hooks.filter_write('bar', "foo"), "\0foo")
def test_filter_read_returns_value_of_callbacks(self):
self.hooks.new_filter('bar')
self.assertEquals(self.hooks.filter_read('bar', "\0foo"), "foo")
def test_add_callbacks_to_filters(self):
self.hooks.new_filter('bar')
filt = NeverAddsFilter()
self.hooks.add_callback('bar', filt)
self.assertEquals(self.hooks.filters['bar'].callbacks, [filt])
def test_remove_callbacks_from_filters(self):
self.hooks.new_filter('bar')
filt = NeverAddsFilter()
self.hooks.add_callback('bar', filt)
self.hooks.remove_callback('bar', filt)
self.assertEquals(self.hooks.filters['bar'].callbacks, [])
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