/
test_dedup.py
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test_dedup.py
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from __future__ import absolute_import, print_function, division
from petl.test.helpers import ieq
from petl.transform.dedup import duplicates, unique, conflicts, distinct, \
isunique
def test_duplicates():
table = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', '2', '3.4'),
('D', 'xyz', 9.0),
('B', u'3', u'7.8', True),
('B', '2', 42),
('E', None),
('D', 4, 12.3))
result = duplicates(table, 'foo')
expectation = (('foo', 'bar', 'baz'),
('B', '2', '3.4'),
('B', u'3', u'7.8', True),
('B', '2', 42),
('D', 'xyz', 9.0),
('D', 4, 12.3))
ieq(expectation, result)
# test with compound key
result = duplicates(table, key=('foo', 'bar'))
expectation = (('foo', 'bar', 'baz'),
('B', '2', '3.4'),
('B', '2', 42))
ieq(expectation, result)
def test_duplicates_empty():
table = (('foo', 'bar'),)
expect = (('foo', 'bar'),)
actual = duplicates(table, key='foo')
ieq(expect, actual)
def test_duplicates_wholerow():
table = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', '2', '3.4'),
('B', '2', '3.4'),
('D', 4, 12.3))
result = duplicates(table)
expectation = (('foo', 'bar', 'baz'),
('B', '2', '3.4'),
('B', '2', '3.4'))
ieq(expectation, result)
def test_unique():
table = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', '2', '3.4'),
('D', 'xyz', 9.0),
('B', u'3', u'7.8', True),
('B', '2', 42),
('E', None),
('D', 4, 12.3),
('F', 7, 2.3))
result = unique(table, 'foo')
expectation = (('foo', 'bar', 'baz'),
('A', 1, 2),
('E', None),
('F', 7, 2.3))
ieq(expectation, result)
ieq(expectation, result)
# test with compound key
result = unique(table, key=('foo', 'bar'))
expectation = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', u'3', u'7.8', True),
('D', 4, 12.3),
('D', 'xyz', 9.0),
('E', None),
('F', 7, 2.3))
ieq(expectation, result)
ieq(expectation, result)
def test_unique_empty():
table = (('foo', 'bar'),)
expect = (('foo', 'bar'),)
actual = unique(table, key='foo')
ieq(expect, actual)
def test_unique_wholerow():
table = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', '2', '3.4'),
('B', '2', '3.4'),
('D', 4, 12.3))
result = unique(table)
expectation = (('foo', 'bar', 'baz'),
('A', 1, 2),
('D', 4, 12.3))
ieq(expectation, result)
def test_conflicts():
table = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', '2', None),
('D', 'xyz', 9.4),
('B', None, u'7.8', True),
('E', None),
('D', 'xyz', 12.3),
('A', 2, None))
result = conflicts(table, 'foo', missing=None)
expectation = (('foo', 'bar', 'baz'),
('A', 1, 2),
('A', 2, None),
('D', 'xyz', 9.4),
('D', 'xyz', 12.3))
ieq(expectation, result)
ieq(expectation, result)
result = conflicts(table, 'foo', missing=None, exclude='baz')
expectation = (('foo', 'bar', 'baz'),
('A', 1, 2),
('A', 2, None))
ieq(expectation, result)
ieq(expectation, result)
result = conflicts(table, 'foo', missing=None, exclude=('bar', 'baz'))
expectation = (('foo', 'bar', 'baz'),)
ieq(expectation, result)
ieq(expectation, result)
result = conflicts(table, 'foo', missing=None, include='bar')
expectation = (('foo', 'bar', 'baz'),
('A', 1, 2),
('A', 2, None))
print(expectation)
print(list(result))
ieq(expectation, result)
ieq(expectation, result)
result = conflicts(table, 'foo', missing=None, include=('bar', 'baz'))
expectation = (('foo', 'bar', 'baz'),
('A', 1, 2),
('A', 2, None),
('D', 'xyz', 9.4),
('D', 'xyz', 12.3))
ieq(expectation, result)
ieq(expectation, result)
def test_conflicts_empty():
table = (('foo', 'bar'),)
expect = (('foo', 'bar'),)
actual = conflicts(table, key='foo')
ieq(expect, actual)
def test_distinct():
table = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', '2', '3.4'),
('B', '2', '3.4'),
('D', 4, 12.3),
(None, None, None))
result = distinct(table)
expect = (('foo', 'bar', 'baz'),
(None, None, None),
('A', 1, 2),
('B', '2', '3.4'),
('D', 4, 12.3))
ieq(expect, result)
def test_distinct_count():
table = (('foo', 'bar', 'baz'),
(None, None, None),
('A', 1, 2),
('B', '2', '3.4'),
('B', '2', '3.4'),
('D', 4, 12.3))
result = distinct(table, count='count')
expect = (('foo', 'bar', 'baz', 'count'),
(None, None, None, 1),
('A', 1, 2, 1),
('B', '2', '3.4', 2),
('D', 4, 12.3, 1))
ieq(expect, result)
def test_key_distinct():
table = (('foo', 'bar', 'baz'),
(None, None, None),
('A', 1, 2),
('B', '2', '3.4'),
('B', '2', '5'),
('D', 4, 12.3))
result = distinct(table, key='foo')
expect = (('foo', 'bar', 'baz'),
(None, None, None),
('A', 1, 2),
('B', '2', '3.4'),
('D', 4, 12.3))
ieq(expect, result)
def test_key_distinct_2():
# test for https://github.com/alimanfoo/petl/issues/318
tbl = (('a', 'b'),
('x', '1'),
('x', '3'),
('y', '1'),
(None, None))
result = distinct(tbl, key='b')
expect = (('a', 'b'),
(None, None),
('x', '1'),
('x', '3'))
ieq(expect, result)
def test_key_distinct_count():
table = (('foo', 'bar', 'baz'),
('A', 1, 2),
('B', '2', '3.4'),
('B', '2', '5'),
('D', 4, 12.3),
(None, None, None))
result = distinct(table, key='foo', count='count')
expect = (('foo', 'bar', 'baz', 'count'),
(None, None, None, 1),
('A', 1, 2, 1),
('B', '2', '3.4', 2),
('D', 4, 12.3, 1))
ieq(expect, result)
def test_isunique():
table = (('foo', 'bar'), ('a', 1), ('b',), ('b', 2), ('c', 3, True))
assert not isunique(table, 'foo')
assert isunique(table, 'bar')