def test_lookup_tables(sentence, expected, labeled_tokens, spacy_nlp):
from rasa.nlu.featurizers.regex_featurizer import RegexFeaturizer
lookups = [
{
"name":
"drinks",
"elements":
["mojito", "lemonade", "sweet berry wine", "tea", "club?mate"],
},
{
"name": "plates",
"elements": "data/test/lookup_tables/plates.txt"
},
]
ftr = RegexFeaturizer(lookup_tables=lookups)
# adds tokens to the message
tokenizer = SpacyTokenizer()
message = Message(sentence)
message.set("spacy_doc", spacy_nlp(sentence))
tokenizer.process(message)
result = ftr.features_for_patterns(message)
assert np.allclose(result, expected, atol=1e-10)
# the tokenizer should have added tokens
assert len(message.get("tokens", [])) > 0
# the number of regex matches on each token should match
for i, token in enumerate(message.get("tokens")):
token_matches = token.get("pattern").values()
num_matches = sum(token_matches)
assert num_matches == labeled_tokens.count(i)
def test_regex_featurizer(sentence, expected, labeled_tokens, spacy_nlp):
from rasa.nlu.featurizers.regex_featurizer import RegexFeaturizer
patterns = [
{"pattern": "[0-9]+", "name": "number", "usage": "intent"},
{"pattern": "\\bhey*", "name": "hello", "usage": "intent"},
{"pattern": "[0-1]+", "name": "binary", "usage": "intent"},
]
ftr = RegexFeaturizer(known_patterns=patterns)
# adds tokens to the message
tokenizer = SpacyTokenizer()
message = Message(sentence)
message.set("spacy_doc", spacy_nlp(sentence))
tokenizer.process(message)
result = ftr.features_for_patterns(message)
assert np.allclose(result, expected, atol=1e-10)
# the tokenizer should have added tokens
assert len(message.get("tokens", [])) > 0
# the number of regex matches on each token should match
for i, token in enumerate(message.get("tokens")):
token_matches = token.get("pattern").values()
num_matches = sum(token_matches)
assert num_matches == labeled_tokens.count(i)
def test_lookup_table_deprecation():
from rasa.nlu.featurizers.regex_featurizer import RegexFeaturizer
lookups = [{
"name":
"drinks",
"elements":
["mojito", "lemonade", "sweet berry wine", "tea", "club?mate"],
}]
with pytest.warns(FutureWarning):
RegexFeaturizer(lookup_tables=lookups)