def test_dictionary_collection(self):
dc = StenoDictionaryCollection()
d1 = StenoDictionary()
d1[('S', )] = 'a'
d1[('T', )] = 'b'
d2 = StenoDictionary()
d2[('S', )] = 'c'
d2[('W', )] = 'd'
dc.set_dicts([d1, d2])
self.assertEqual(dc.lookup(('S', )), 'c')
self.assertEqual(dc.lookup(('W', )), 'd')
self.assertEqual(dc.lookup(('T', )), 'b')
f = lambda k, v: v == 'c'
dc.add_filter(f)
self.assertIsNone(dc.lookup(('S', )))
self.assertEqual(dc.raw_lookup(('S', )), 'c')
self.assertEqual(dc.lookup(('W', )), 'd')
self.assertEqual(dc.lookup(('T', )), 'b')
self.assertEqual(dc.reverse_lookup('c'), [('S', )])
dc.remove_filter(f)
self.assertEqual(dc.lookup(('S', )), 'c')
self.assertEqual(dc.lookup(('W', )), 'd')
self.assertEqual(dc.lookup(('T', )), 'b')
self.assertEqual(dc.reverse_lookup('c'), [('S', )])
dc.set(('S', ), 'e')
self.assertEqual(dc.lookup(('S', )), 'e')
self.assertEqual(d2[('S', )], 'e')
def test_dictionary_enabled(self):
dc = StenoDictionaryCollection()
d1 = StenoDictionary()
d1.path = 'd1'
d1[('TEFT', )] = 'test1'
d1[('TEFGT', )] = 'Testing'
d2 = StenoDictionary()
d2[('TEFT', )] = 'test2'
d2[('TEFT', '-G')] = 'Testing'
d2.path = 'd2'
dc.set_dicts([d2, d1])
self.assertEqual(dc.lookup(('TEFT', )), 'test2')
self.assertEqual(dc.raw_lookup(('TEFT', )), 'test2')
self.assertEqual(dc.casereverse_lookup('testing'), ['Testing'])
self.assertCountEqual(dc.reverse_lookup('Testing'), [('TEFGT', ),
('TEFT', '-G')])
d2.enabled = False
self.assertEqual(dc.lookup(('TEFT', )), 'test1')
self.assertEqual(dc.raw_lookup(('TEFT', )), 'test1')
self.assertEqual(dc.casereverse_lookup('testing'), ['Testing'])
self.assertCountEqual(dc.reverse_lookup('Testing'), [('TEFGT', )])
d1.enabled = False
self.assertEqual(dc.lookup(('TEST', )), None)
self.assertEqual(dc.raw_lookup(('TEFT', )), None)
self.assertEqual(dc.casereverse_lookup('testing'), None)
self.assertCountEqual(dc.reverse_lookup('Testing'), [])
def test_dictionary_collection_longest_key():
k1 = ('S', )
k2 = ('S', 'T')
k3 = ('S', 'T', 'R')
dc = StenoDictionaryCollection()
assert dc.longest_key == 0
d1 = StenoDictionary()
d1.path = 'd1'
d1[k1] = 'a'
dc.set_dicts([d1])
assert dc.longest_key == 1
d1[k2] = 'a'
assert dc.longest_key == 2
d2 = StenoDictionary()
d2.path = 'd2'
d2[k3] = 'c'
dc.set_dicts([d2, d1])
assert dc.longest_key == 3
del d1[k2]
assert dc.longest_key == 3
dc.set_dicts([d1])
assert dc.longest_key == 1
dc.set_dicts([])
assert dc.longest_key == 0
def test_dictionary_enabled():
dc = StenoDictionaryCollection()
d1 = StenoDictionary()
d1.path = 'd1'
d1[('TEFT', )] = 'test1'
d1[('TEFGT', )] = 'Testing'
d2 = StenoDictionary()
d2[('TEFT', )] = 'test2'
d2[('TEFT', '-G')] = 'Testing'
d2.path = 'd2'
dc.set_dicts([d2, d1])
assert dc.lookup(('TEFT', )) == 'test2'
assert dc.raw_lookup(('TEFT', )) == 'test2'
assert dc.casereverse_lookup('testing') == ['Testing']
assert dc.reverse_lookup('Testing') == {('TEFT', '-G'), ('TEFGT', )}
d2.enabled = False
assert dc.lookup(('TEFT', )) == 'test1'
assert dc.raw_lookup(('TEFT', )) == 'test1'
assert dc.casereverse_lookup('testing') == ['Testing']
assert dc.reverse_lookup('Testing') == {('TEFGT', )}
d1.enabled = False
assert dc.lookup(('TEST', )) is None
assert dc.raw_lookup(('TEFT', )) is None
assert dc.casereverse_lookup('testing') == []
assert dc.reverse_lookup('Testing') == set()
def test_reverse_lookup():
dc = StenoDictionaryCollection()
d1 = StenoDictionary()
d1['PWAOUFL'] = 'beautiful'
d1['WAOUFL'] = 'beautiful'
d2 = StenoDictionary()
d2['PW-FL'] = 'beautiful'
d3 = StenoDictionary()
d3['WAOUFL'] = 'not beautiful'
# Simple test.
dc.set_dicts([d1])
assert dc.reverse_lookup('beautiful') == {'PWAOUFL', 'WAOUFL'}
# No duplicates.
d2_copy = StenoDictionary()
d2_copy.update(d2)
dc.set_dicts([d2_copy, d2])
assert dc.reverse_lookup('beautiful') == {'PW-FL'}
# Don't stop at the first dictionary with matches.
dc.set_dicts([d2, d1])
assert dc.reverse_lookup('beautiful') == {'PW-FL', 'PWAOUFL', 'WAOUFL'}
# Ignore keys overridden by a higher precedence dictionary.
dc.set_dicts([d3, d2, d1])
assert dc.reverse_lookup('beautiful') == {'PW-FL', 'PWAOUFL'}
def test_reverse_lookup(self):
dc = StenoDictionaryCollection()
d1 = StenoDictionary()
d1[('PWAOUFL', )] = 'beautiful'
d1[('WAOUFL', )] = 'beautiful'
d2 = StenoDictionary()
d2[('PW-FL', )] = 'beautiful'
d3 = StenoDictionary()
d3[('WAOUFL', )] = 'not beautiful'
# Simple test.
dc.set_dicts([d1])
self.assertCountEqual(dc.reverse_lookup('beautiful'), [('PWAOUFL', ),
('WAOUFL', )])
# No duplicates.
d2_copy = StenoDictionary()
d2_copy.update(d2)
dc.set_dicts([d2_copy, d2])
self.assertCountEqual(dc.reverse_lookup('beautiful'), [('PW-FL', )])
# Don't stop at the first dictionary with matches.
dc.set_dicts([d2, d1])
self.assertCountEqual(dc.reverse_lookup('beautiful'), [('PWAOUFL', ),
('WAOUFL', ),
('PW-FL', )])
# Ignore keys overridden by a higher precedence dictionary.
dc.set_dicts([d3, d2, d1])
self.assertCountEqual(dc.reverse_lookup('beautiful'), [('PWAOUFL', ),
('PW-FL', )])
def test_dictionary_collection_longest_key(self):
k1 = ('S', )
k2 = ('S', 'T')
k3 = ('S', 'T', 'R')
dc = StenoDictionaryCollection()
self.assertEqual(dc.longest_key, 0)
d1 = StenoDictionary()
d1._path = 'd1'
d1[k1] = 'a'
dc.set_dicts([d1])
self.assertEqual(dc.longest_key, 1)
d1[k2] = 'a'
self.assertEqual(dc.longest_key, 2)
d2 = StenoDictionary()
d2._path = 'd2'
d2[k3] = 'c'
dc.set_dicts([d2, d1])
self.assertEqual(dc.longest_key, 3)
del d1[k2]
self.assertEqual(dc.longest_key, 3)
dc.set_dicts([d1])
self.assertEqual(dc.longest_key, 1)
dc.set_dicts([])
self.assertEqual(dc.longest_key, 0)
def test_dictionary_collection_writeable(self):
d1 = StenoDictionary()
d1[('S', )] = 'a'
d1[('T', )] = 'b'
d2 = StenoDictionary()
d2[('S', )] = 'c'
d2[('W', )] = 'd'
d2.readonly = True
dc = StenoDictionaryCollection([d2, d1])
self.assertEqual(dc.first_writable(), d1)
dc.set(('S', ), 'A')
self.assertEqual(d1[('S', )], 'A')
self.assertEqual(d2[('S', )], 'c')
def test_dictionary_collection_writeable():
d1 = StenoDictionary()
d1[('S', )] = 'a'
d1[('T', )] = 'b'
d2 = StenoDictionary()
d2[('S', )] = 'c'
d2[('W', )] = 'd'
d2.readonly = True
dc = StenoDictionaryCollection([d2, d1])
assert dc.first_writable() == d1
dc.set(('S', ), 'A')
assert d1[('S', )] == 'A'
assert d2[('S', )] == 'c'
def test_dictionary_collection(self):
dc = StenoDictionaryCollection()
d1 = StenoDictionary()
d1[('S', )] = 'a'
d1[('T', )] = 'b'
d1.path = 'd1'
d2 = StenoDictionary()
d2[('S', )] = 'c'
d2[('W', )] = 'd'
d2.path = 'd2'
dc.set_dicts([d2, d1])
self.assertEqual(dc.lookup(('S', )), 'c')
self.assertEqual(dc.lookup(('W', )), 'd')
self.assertEqual(dc.lookup(('T', )), 'b')
f = lambda k, v: v == 'c'
dc.add_filter(f)
self.assertIsNone(dc.lookup(('S', )))
self.assertEqual(dc.raw_lookup(('S', )), 'c')
self.assertEqual(dc.lookup(('W', )), 'd')
self.assertEqual(dc.lookup(('T', )), 'b')
self.assertEqual(dc.reverse_lookup('c'), [('S', )])
dc.remove_filter(f)
self.assertEqual(dc.lookup(('S', )), 'c')
self.assertEqual(dc.lookup(('W', )), 'd')
self.assertEqual(dc.lookup(('T', )), 'b')
self.assertEqual(dc.reverse_lookup('c'), [('S', )])
dc.set(('S', ), 'e')
self.assertEqual(dc.lookup(('S', )), 'e')
self.assertEqual(d2[('S', )], 'e')
dc.set(('S', ), 'f', path='d1')
self.assertEqual(dc.lookup(('S', )), 'e')
self.assertEqual(d1[('S', )], 'f')
self.assertEqual(d2[('S', )], 'e')
# Iterating on a StenoDictionaryCollection is
# the same as iterating on its dictionaries' paths.
self.assertEqual(list(dc), ['d2', 'd1'])
# Test get and [].
self.assertEqual(dc.get('d1'), d1)
self.assertEqual(dc['d1'], d1)
self.assertEqual(dc.get('invalid'), None)
with self.assertRaises(KeyError):
dc['invalid']
def test_dictionary():
d = StenoDictionary()
assert len(d) == 0
assert not d
d['S'] = 'a'
assert 'S' in d
assert len(d) == 1
assert d
d['S/S/S/S'] = 'b'
assert len(d) == 2
d['S/S'] = 'c'
assert d['S/S'] == 'c'
assert len(d) == 3
del d['S/S/S/S']
assert len(d) == 2
del d['S']
assert 'S' not in d
assert len(d) == 1
assert d.reverse_lookup('c') == ['S/S']
assert d.casereverse_lookup('c') == ['c']
d.clear()
assert len(d) == 0
assert not d
assert d.reverse_lookup('c') == []
assert d.casereverse_lookup('c') == []
d['S/S'] = 'c'
def test_dictionary_update(update_from, start_empty):
d = StenoDictionary()
if not start_empty:
d.update({
('SPH*G', ): 'not something',
('STHEUPBG', ): 'something',
('EF', 'REU', 'TH*EUPBG'): 'everything',
})
assert d[('STHEUPBG', )] == 'something'
assert d[('EF', 'REU', 'TH*EUPBG')] == 'everything'
assert d.reverse_lookup('not something') == [('SPH*G', )]
assert d.longest_key == 3
d.update(update_from)
assert d[('S-G', )] == 'something'
assert d[('SPH-G', )] == 'something'
assert d[('SPH*G', )] == 'Something'
assert d[('SPH', 'THEUPBG')] == 'something'
if not start_empty:
assert d[('STHEUPBG', )] == 'something'
assert d[('EF', 'REU', 'TH*EUPBG')] == 'everything'
assert d.reverse_lookup('not something') == []
assert d.reverse_lookup('something') == [('STHEUPBG', ), ('S-G', ),
('SPH-G', ),
('SPH', 'THEUPBG')]
assert set(
d.casereverse_lookup('something')) == {'something', 'Something'}
assert d.longest_key == 3
else:
assert d.reverse_lookup('something') == [('S-G', ), ('SPH-G', ),
('SPH', 'THEUPBG')]
assert set(
d.casereverse_lookup('something')) == {'something', 'Something'}
assert d.longest_key == 2
def setup_method(self):
self.t = Translator()
self.s = type(self).FakeState()
self.t._state = self.s
self.d = StenoDictionary()
self.dc = StenoDictionaryCollection([self.d])
self.t.set_dictionary(self.dc)
def test_dictionary_collection():
d1 = StenoDictionary()
d1[('S', )] = 'a'
d1[('T', )] = 'b'
d1.path = 'd1'
d2 = StenoDictionary()
d2[('S', )] = 'c'
d2[('W', )] = 'd'
d2.path = 'd2'
dc = StenoDictionaryCollection([d2, d1])
assert dc.lookup(('S', )) == 'c'
assert dc.lookup(('W', )) == 'd'
assert dc.lookup(('T', )) == 'b'
f = lambda k, v: v == 'c'
dc.add_filter(f)
assert dc.lookup(('S', )) is None
assert dc.raw_lookup(('S', )) == 'c'
assert dc.lookup(('W', )) == 'd'
assert dc.lookup(('T', )) == 'b'
assert dc.reverse_lookup('c') == {('S', )}
dc.remove_filter(f)
assert dc.lookup(('S', )) == 'c'
assert dc.lookup(('W', )) == 'd'
assert dc.lookup(('T', )) == 'b'
assert dc.reverse_lookup('c') == {('S', )}
dc.set(('S', ), 'e')
assert dc.lookup(('S', )) == 'e'
assert d2[('S', )] == 'e'
dc.set(('S', ), 'f', path='d1')
assert dc.lookup(('S', )) == 'e'
assert d1[('S', )] == 'f'
assert d2[('S', )] == 'e'
# Iterating on a StenoDictionaryCollection is
# the same as iterating on its dictionaries' paths.
assert list(dc) == ['d2', 'd1']
# Test get and [].
assert dc.get('d1') == d1
assert dc['d1'] == d1
assert dc.get('invalid') is None
with pytest.raises(KeyError):
dc['invalid']
def setup_method(self):
self.d = StenoDictionary()
self.dc = StenoDictionaryCollection([self.d])
self.s = _State()
self.o = self.CaptureOutput()
self.tlor = Translator()
self.tlor.set_dictionary(self.dc)
self.tlor.add_listener(self.o)
self.tlor.set_state(self.s)
def setUp(self):
self.output = CaptureOutput()
self.formatter = Formatter()
self.formatter.set_output(self.output)
self.translator = Translator()
self.translator.set_min_undo_length(100)
self.translator.add_listener(self.formatter.format)
self.dictionary = self.translator.get_dictionary()
self.dictionary.set_dicts([StenoDictionary()])
def blackbox_setup(blackbox):
blackbox.output = CaptureOutput()
blackbox.formatter = Formatter()
blackbox.formatter.set_output(blackbox.output)
blackbox.translator = Translator()
blackbox.translator.set_min_undo_length(100)
blackbox.translator.add_listener(blackbox.formatter.format)
blackbox.dictionary = blackbox.translator.get_dictionary()
blackbox.dictionary.set_dicts([StenoDictionary()])
def test_casereverse_del(self):
d = StenoDictionary()
d[('S-G', )] = 'something'
d[('SPH-G', )] = 'something'
self.assertEqual(d.casereverse_lookup('something'), ['something'])
del d[('S-G', )]
self.assertEqual(d.casereverse_lookup('something'), ['something'])
del d[('SPH-G', )]
self.assertEqual(d.casereverse_lookup('something'), [])
def test_casereverse_del():
d = StenoDictionary()
d[('S-G', )] = 'something'
d[('SPH-G', )] = 'something'
assert d.casereverse_lookup('something') == ['something']
del d[('S-G', )]
assert d.casereverse_lookup('something') == ['something']
del d[('SPH-G', )]
assert d.casereverse_lookup('something') == []
def test_casereverse_lookup():
dc = StenoDictionaryCollection()
d1 = StenoDictionary()
d1[('PWAOUFL', )] = 'beautiful'
d1[('WAOUFL', )] = 'beAuTIFul'
d2 = StenoDictionary()
d2[('PW-FL', )] = 'BEAUTIFUL'
d3 = StenoDictionary()
d3[('WAOUFL', )] = 'not beautiful'
dc.set_dicts([d1, d2, d3])
assert dc.casereverse_lookup('beautiful') == {
'beautiful', 'BEAUTIFUL', 'beAuTIFul'
}
def setUp(self):
self.output = CaptureOutput()
self.formatter = Formatter()
self.formatter.set_output(self.output)
self.translator = Translator()
self.translator.add_listener(self.formatter.format)
self.dictionary = self.translator.get_dictionary()
dictionary = StenoDictionary()
dictionary.save = lambda: None
self.dictionary.set_dicts([dictionary])
def load_dictionary(s):
"""Load an RTF/CRE dictionary."""
styles = load_stylesheet(s)
d = {}
converter = TranslationConverter(styles)
for m in DICT_ENTRY_PATTERN.finditer(s):
steno = normalize_steno(m.group('steno'))
translation = m.group('translation')
converted = converter(translation)
if converted is not None:
d[steno] = converted
return StenoDictionary(d)
def test_dictionary(self):
notifications = []
def listener(longest_key):
notifications.append(longest_key)
d = StenoDictionary()
self.assertEqual(d.longest_key, 0)
d.add_longest_key_listener(listener)
d[('S', )] = 'a'
self.assertEqual(d.longest_key, 1)
self.assertEqual(notifications, [1])
d[('S', 'S', 'S', 'S')] = 'b'
self.assertEqual(d.longest_key, 4)
self.assertEqual(notifications, [1, 4])
d[('S', 'S')] = 'c'
self.assertEqual(d.longest_key, 4)
self.assertEqual(d[('S', 'S')], 'c')
self.assertEqual(notifications, [1, 4])
del d[('S', 'S', 'S', 'S')]
self.assertEqual(d.longest_key, 2)
self.assertEqual(notifications, [1, 4, 2])
del d[('S', )]
self.assertEqual(d.longest_key, 2)
self.assertEqual(notifications, [1, 4, 2])
d.clear()
self.assertEqual(d.longest_key, 0)
self.assertEqual(notifications, [1, 4, 2, 0])
d.remove_longest_key_listener(listener)
d[('S', 'S')] = 'c'
self.assertEqual(d.longest_key, 2)
self.assertEqual(notifications, [1, 4, 2, 0])
self.assertEqual(list(StenoDictionary([('a', 'b')]).items()),
[('a', 'b')])
self.assertEqual(list(StenoDictionary(a='b').items()), [('a', 'b')])
def load_dictionary(filename):
"""Load an RTF/CRE dictionary."""
with resource_stream(filename) as fp:
s = fp.read().decode('cp1252')
styles = load_stylesheet(s)
d = {}
converter = TranslationConverter(styles)
for m in DICT_ENTRY_PATTERN.finditer(s):
steno = normalize_steno(m.group('steno'))
translation = m.group('translation')
converted = converter(translation)
if converted is not None:
d[steno] = converted
return StenoDictionary(d)
def test_dictionary():
notifications = []
def listener(longest_key):
notifications.append(longest_key)
d = StenoDictionary()
assert d.longest_key == 0
assert len(d) == 0
assert not d
d.add_longest_key_listener(listener)
d[('S', )] = 'a'
assert d.longest_key == 1
assert ('S', ) in d
assert notifications == [1]
assert len(d) == 1
assert d
d[('S', 'S', 'S', 'S')] = 'b'
assert d.longest_key == 4
assert notifications == [1, 4]
assert len(d) == 2
d[('S', 'S')] = 'c'
assert d.longest_key == 4
assert d[('S', 'S')] == 'c'
assert notifications == [1, 4]
assert len(d) == 3
del d[('S', 'S', 'S', 'S')]
assert d.longest_key == 2
assert notifications == [1, 4, 2]
assert len(d) == 2
del d[('S', )]
assert d.longest_key == 2
assert ('S', ) not in d
assert notifications == [1, 4, 2]
assert len(d) == 1
assert d.reverse_lookup('c') == [('S', 'S')]
assert d.casereverse_lookup('c') == ['c']
d.clear()
assert d.longest_key == 0
assert notifications == [1, 4, 2, 0]
assert len(d) == 0
assert not d
assert d.reverse_lookup('c') == []
assert d.casereverse_lookup('c') == []
d.remove_longest_key_listener(listener)
d[('S', 'S')] = 'c'
assert d.longest_key == 2
assert notifications == [1, 4, 2, 0]
def load_dictionary(filename):
for encoding in ('utf-8', 'latin-1'):
try:
with resource_stream(filename, encoding=encoding) as fp:
d = json.load(fp)
break
except UnicodeDecodeError:
continue
else:
raise ValueError('\'%s\' encoding could not be determined' %
(filename, ))
return StenoDictionary(
(normalize_steno(x[0]), x[1]) for x in iteritems(dict(d)))
def test_dictionary_update():
d = StenoDictionary()
d.update([(('S-G', ), 'something'), (('SPH-G', ), 'something'),
(('TPHOG', ), 'nothing')])
assert d[('S-G', )] == 'something'
assert d[('SPH-G', )] == 'something'
assert d[('TPHOG', )] == 'nothing'
assert d.reverse_lookup('something') == [('S-G', ), ('SPH-G', )]
assert d.reverse_lookup('nothing') == [('TPHOG', )]
d.update([(('S-G', ), 'string')])
assert d[('S-G', )] == 'string'
assert d.reverse_lookup('something') == [('SPH-G', )]
assert d.reverse_lookup('string') == [('S-G', )]
d.clear()
d.update([(('EFG', ), 'everything'), (('EFG', ), 'everything???')])
assert d[('EFG', )] == 'everything???'
assert d.reverse_lookup('everything') == []
assert d.reverse_lookup('everything???') == [('EFG', )]
def test_changing_state(self):
output = []
def listener(undo, do, prev):
prev = list(prev) if prev else None
output.append((undo, do, prev))
d = StenoDictionary()
d[('S', 'P')] = 'hi'
dc = StenoDictionaryCollection()
dc.set_dicts([d])
t = Translator()
t.set_dictionary(dc)
t.translate(stroke('T'))
t.translate(stroke('S'))
s = copy.deepcopy(t.get_state())
t.add_listener(listener)
expected = [([Translation([stroke('S')], None)],
[Translation([stroke('S'), stroke('P')], 'hi')],
[Translation([stroke('T')], None)])]
t.translate(stroke('P'))
self.assertEqual(output, expected)
del output[:]
t.set_state(s)
t.translate(stroke('P'))
self.assertEqual(output, expected)
del output[:]
t.clear_state()
t.translate(stroke('P'))
self.assertEqual(output, [([], [Translation([stroke('P')], None)], None)])
del output[:]
t.set_state(s)
t.translate(stroke('P'))
self.assertEqual(output,
[([],
[Translation([stroke('P')], None)],
[Translation([stroke('S'), stroke('P')], 'hi')])])
def steno_dictionaries_from_state(state_str, existing_dictionaries=None):
new_dictionaries = []
for enabled, icon, path in parse_state(state_str):
if icon == 'loading':
continue
path = expand_path(path)
if existing_dictionaries is None:
steno_dict = None
else:
steno_dict = existing_dictionaries.get(path)
if steno_dict is None:
if icon == 'error' or path.endswith('.bad'):
steno_dict = ErroredDictionary(path, INVALID_EXCEPTION)
else:
steno_dict = StenoDictionary()
steno_dict.path = path
steno_dict.readonly = (icon == 'readonly'
or path.endswith('.ro')
or path.startswith('asset:'))
steno_dict.enabled = enabled
new_dictionaries.append(steno_dict)
return new_dictionaries
def test_dictionary():
notifications = []
def listener(longest_key):
notifications.append(longest_key)
d = StenoDictionary()
assert d.longest_key == 0
d.add_longest_key_listener(listener)
d[('S', )] = 'a'
assert d.longest_key == 1
assert notifications == [1]
d[('S', 'S', 'S', 'S')] = 'b'
assert d.longest_key == 4
assert notifications == [1, 4]
d[('S', 'S')] = 'c'
assert d.longest_key == 4
assert d[('S', 'S')] == 'c'
assert notifications == [1, 4]
del d[('S', 'S', 'S', 'S')]
assert d.longest_key == 2
assert notifications == [1, 4, 2]
del d[('S', )]
assert d.longest_key == 2
assert notifications == [1, 4, 2]
assert d.reverse_lookup('c') == {('S', 'S')}
assert d.casereverse_lookup('c') == {'c'}
d.clear()
assert d.longest_key == 0
assert notifications == [1, 4, 2, 0]
assert d.reverse_lookup('c') == set()
assert d.casereverse_lookup('c') == set()
d.remove_longest_key_listener(listener)
d[('S', 'S')] = 'c'
assert d.longest_key == 2
assert notifications == [1, 4, 2, 0]
