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import unittest
import arff
ARFF = '''%
% DESCRIPTION HERE
%
@RELATION weather
@ATTRIBUTE outlook {sunny, overcast, rainy}
@ATTRIBUTE temperature REAL
@ATTRIBUTE humidity REAL
@ATTRIBUTE windy {TRUE, FALSE}
@ATTRIBUTE play {yes, no}
@DATA
sunny,85.0,85.0,FALSE,no
sunny,80.0,90.0,TRUE,no
overcast,83.0,86.0,FALSE,yes
rainy,70.0,96.0,FALSE,yes
rainy,68.0,80.0,FALSE,yes
rainy,65.0,70.0,TRUE,no
overcast,64.0,65.0,TRUE,yes
sunny,72.0,95.0,FALSE,no
sunny,69.0,70.0,FALSE,yes
rainy,75.0,80.0,FALSE,yes
sunny,75.0,70.0,TRUE,yes
overcast,72.0,90.0,TRUE,yes
overcast,81.0,75.0,FALSE,yes
rainy,71.0,91.0,TRUE,no
'''
OBJ = {
u'description':u'\nDESCRIPTION HERE\n',
u'relation': u'weather',
u'attributes': [
(u'outlook', [u'sunny', u'overcast', u'rainy']),
(u'temperature', 'REAL'),
(u'humidity', 'REAL'),
(u'windy', [u'TRUE', u'FALSE']),
(u'play', [u'yes', u'no'])
],
u'data': [
[u'sunny', 85.0, 85.0, u'FALSE', u'no'],
[u'sunny', 80.0, 90.0, u'TRUE', u'no'],
[u'overcast', 83.0, 86.0, u'FALSE', u'yes'],
[u'rainy', 70.0, 96.0, u'FALSE', u'yes'],
[u'rainy', 68.0, 80.0, u'FALSE', u'yes'],
[u'rainy', 65.0, 70.0, u'TRUE', u'no'],
[u'overcast', 64.0, 65.0, u'TRUE', u'yes'],
[u'sunny', 72.0, 95.0, u'FALSE', u'no'],
[u'sunny', 69.0, 70.0, u'FALSE', u'yes'],
[u'rainy', 75.0, 80.0, u'FALSE', u'yes'],
[u'sunny', 75.0, 70.0, u'TRUE', u'yes'],
[u'overcast', 72.0, 90.0, u'TRUE', u'yes'],
[u'overcast', 81.0, 75.0, u'FALSE', u'yes'],
[u'rainy', 71.0, 91.0, u'TRUE', u'no']
]
}
class TestEncodeComment(unittest.TestCase):
def get_encoder(self):
encoder = arff.ArffEncoder()
return encoder
def test_encode(self):
encoder = self.get_encoder()
result = encoder.encode(OBJ)
expected = ARFF
self.assertEqual(result, expected)
def test_iter_encode(self):
encoder = self.get_encoder()
result = encoder.iter_encode(OBJ)
expected = ARFF.split('\n')
for r, e in zip(result, expected):
self.assertEqual(r, e)
def test_invalid_object(self):
encoder = self.get_encoder()
fixture = {'attributes':[('name','REAL')], 'data':[[1]]}
self.assertRaises(
arff.BadObject,
encoder.encode,
fixture
)
fixture = {'relation':'name', 'data':[[1]]}
self.assertRaises(
arff.BadObject,
encoder.encode,
fixture
)
def test_invalid_object_attribute(self):
encoder = self.get_encoder()
fixture = {
'relation':'name',
'attributes':[4],
'data':[[1]]
}
self.assertRaises(
arff.BadObject,
encoder.encode,
fixture
)
fixture = {
'relation':'name',
'attributes':[(2, 'REAL')],
'data':[[1]]
}
self.assertRaises(
arff.BadObject,
encoder.encode,
fixture
)
fixture = {
'relation':'name',
'attributes':[('NAME', 'REAL', 'MORE')],
'data':[[1]]
}
self.assertRaises(
arff.BadObject,
encoder.encode,
fixture
)
fixture = {
'relation':'name',
'attributes':[('NAME', 3)],
'data':[[1]]
}
self.assertRaises(
arff.BadObject,
encoder.encode,
fixture
)
def test_attribute_invalid_attribute_type(self):
encoder = self.get_encoder()
fixture = {
'relation':'name',
'attributes':[('name','INVALID')],
'data':[[1]]
}
self.assertRaises(
arff.BadObject,
encoder.encode,
fixture
)
def test_encode_duplicate_attribute_name(self):
encoder = self.get_encoder()
fixture = {
'relation': 'name',
'attributes': [('name', 'INTEGER'), ('name', 'INTEGER')],
'data': [[0], [1]],
}
with self.assertRaisesRegex(arff.BadObject,
'Trying to use attribute name "name" '
'for the second time.'):
encoder.encode(fixture)
def test_encode_string(self):
encoder = self.get_encoder()
fixture = """@RELATION bla
@ATTRIBUTE attr STRING
@DATA
'a,b,c'
'a,b,c '
'a\\\\c'
'a\\"c'
'a\\'c'
'a\\nc'
'a\\tc'
'a\\000c'
'a\\017c'
"""
my_arff = {
"attributes": [["attr", "STRING"]],
"data": [["a,b,c"],
["a,b,c "],
["a\\c"],
["a\"c"],
["a'c"],
["a\nc"],
["a\tc"],
["a\0c"],
["a\017c"],
],
"relation": "bla"}
self.assertEqual(encoder.encode(my_arff), fixture)
def test_encode_adding_quotes_with_spaces(self):
# regression tests for https://github.com/renatopp/liac-arff/issues/87
encoder = self.get_encoder()
# \u3000 corresponds to an ideographic space. It should be treated as
# a space.
fixture = {
'relation': 'name',
'attributes': [('A', 'STRING'), ('B', 'STRING')],
'data': [[u'a', u'b'], [u'b\u3000e', u'a']],
}
expected_data = u"""@RELATION name
@ATTRIBUTE A STRING
@ATTRIBUTE B STRING
@DATA
a,b
'b\u3000e',a
"""
arff_data = encoder.encode(fixture)
self.assertEqual(arff_data, expected_data)
decoder = arff.ArffDecoder()
arff_object = decoder.decode(arff_data)
self.assertEqual(arff_object['data'], fixture['data'])
|
