def test_gettingNextOfFirstInterpretationChangesOnlyTheLastWord(
self, double_love_tree):
next_of_none = double_love_tree.get_next_interpretation(None)
next_of_first = double_love_tree.get_next_interpretation(next_of_none)
assert len(next_of_first) == 2
assert next_of_first[0] == Token("love", PartOfSpeech.NOUN)
assert next_of_first[1] == Token("love", PartOfSpeech.V_IMP)
def test_completelyValidInterpretationIsReturnedFully(
self, double_love_tree):
interpretation = [
Token("love", PartOfSpeech.NOUN),
Token("love", PartOfSpeech.NOUN),
]
sub_interpretation = double_love_tree.longest_legal_sub_interpretation(
interpretation)
assert sub_interpretation == interpretation
def test_gettingNextOfLastInterpretationReturnsNone(
self, double_love_tree):
last_interpretation = [
Token("love", PartOfSpeech.V_IMP),
Token("love", PartOfSpeech.V_IMP),
]
next_of_last = double_love_tree.get_next_interpretation(
last_interpretation)
assert next_of_last is None
def test_canQueryInterpretationAndReceiveLongestMatchingSubsequence(
self, double_love_tree):
sub_interpretation = double_love_tree.longest_legal_sub_interpretation(
[
Token("love", PartOfSpeech.NOUN),
Token("love", PartOfSpeech.PREPOSITION),
Token("love", PartOfSpeech.OTHER),
])
assert len(sub_interpretation) == 1
assert sub_interpretation[0] == Token("love", PartOfSpeech.NOUN)
def test_whenProvidingIncompleteInterpretationNextInterpretationReturnedIsComplete(
self, double_love_tree):
last_interpretation = [
Token("love", PartOfSpeech.V_IMP),
]
next_of_first = double_love_tree.get_next_interpretation(
last_interpretation)
assert len(next_of_first) == 2
assert next_of_first[0] == Token("love", PartOfSpeech.V_IMP)
assert next_of_first[1] == Token("love", PartOfSpeech.NOUN)
def test_whenLastWordOptionsAreExhaustedNextInterpretationChangesPreviousWord(
self, double_love_tree):
last_interpretation = [
Token("love", PartOfSpeech.NOUN),
Token("love", PartOfSpeech.V_IMP),
]
next_of_first = double_love_tree.get_next_interpretation(
last_interpretation)
assert len(next_of_first) == 2
assert next_of_first[0] == Token("love", PartOfSpeech.V_IMP)
assert next_of_first[1] == Token("love", PartOfSpeech.NOUN)
def test_gettingNextOfNoneReturnsAPossibleParsingForEachWord(
self, double_love_tree):
next_of_none = double_love_tree.get_next_interpretation(None)
assert len(next_of_none) == 2
assert next_of_none[0] == Token("love", PartOfSpeech.NOUN)
assert next_of_none[1] == Token("love", PartOfSpeech.NOUN)
def token(self):
return Token.from_tuple(self._stack.pop())