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test_setops.py
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test_setops.py
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from __future__ import absolute_import, print_function, division
from datetime import datetime
from petl.test.helpers import ieq
from petl.transform.setops import complement, intersection, diff, \
recordcomplement, recorddiff, hashcomplement, hashintersection
def _test_complement_1(complement_impl):
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('C', 7))
table2 = (('foo', 'bar'),
('A', 9),
('B', 2),
('B', 3))
expectation = (('foo', 'bar'),
('A', 1),
('C', 7))
result = complement_impl(table1, table2)
ieq(expectation, result)
def _test_complement_2(complement_impl):
tablea = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False),
('B', 2, False),
('C', 9, True))
tableb = (('x', 'y', 'z'),
('B', 2, False),
('A', 9, False),
('B', 3, True),
('C', 9, True))
aminusb = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False))
result = complement_impl(tablea, tableb)
ieq(aminusb, result)
bminusa = (('x', 'y', 'z'),
('A', 9, False),
('B', 3, True))
result = complement_impl(tableb, tablea)
ieq(bminusa, result)
def _test_complement_3(complement_impl):
# make sure we deal with empty tables
table1 = (('foo', 'bar'),
('A', 1),
('B', 2))
table2 = (('foo', 'bar'),)
expectation = (('foo', 'bar'),
('A', 1),
('B', 2))
result = complement_impl(table1, table2)
ieq(expectation, result)
ieq(expectation, result)
expectation = (('foo', 'bar'),)
result = complement_impl(table2, table1)
ieq(expectation, result)
ieq(expectation, result)
def _test_complement_4(complement_impl):
# test behaviour with duplicate rows
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('B', 2),
('C', 7))
table2 = (('foo', 'bar'),
('B', 2))
result = complement_impl(table1, table2)
expectation = (('foo', 'bar'),
('A', 1),
('B', 2),
('C', 7))
ieq(expectation, result)
ieq(expectation, result)
# strict behaviour
result = complement_impl(table1, table2, strict=True)
expectation = (('foo', 'bar'),
('A', 1),
('C', 7))
ieq(expectation, result)
ieq(expectation, result)
def _test_complement_none(complement_impl):
# test behaviour with unsortable types
now = datetime.now()
ta = [['a', 'b'], [None, None]]
tb = [['a', 'b'], [None, now]]
expectation = (('a', 'b'), (None, None))
result = complement_impl(ta, tb)
ieq(expectation, result)
ta = [['a'], [now], [None]]
tb = [['a'], [None], [None]]
expectation = (('a',), (now,))
result = complement_impl(ta, tb)
ieq(expectation, result)
def _test_complement(f):
_test_complement_1(f)
_test_complement_2(f)
_test_complement_3(f)
_test_complement_4(f)
_test_complement_none(f)
def test_complement():
_test_complement(complement)
def test_complement_seqtypes():
# test complement isn't confused by list vs tuple
ta = [['a', 'b'], ['A', 1], ['B', 2]]
tb = [('a', 'b'), ('A', 1), ('B', 2)]
expectation = (('a', 'b'),)
actual = complement(ta, tb, presorted=True)
ieq(expectation, actual)
def test_hashcomplement_seqtypes():
# test complement isn't confused by list vs tuple
ta = [['a', 'b'], ['A', 1], ['B', 2]]
tb = [('a', 'b'), ('A', 1), ('B', 2)]
expectation = (('a', 'b'),)
actual = hashcomplement(ta, tb)
ieq(expectation, actual)
def test_diff():
tablea = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False),
('B', 2, False),
('C', 9, True))
tableb = (('x', 'y', 'z'),
('B', 2, False),
('A', 9, False),
('B', 3, True),
('C', 9, True))
aminusb = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False))
bminusa = (('x', 'y', 'z'),
('A', 9, False),
('B', 3, True))
added, subtracted = diff(tablea, tableb)
ieq(bminusa, added)
ieq(aminusb, subtracted)
def test_recordcomplement_1():
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('C', 7))
table2 = (('bar', 'foo'),
(9, 'A'),
(2, 'B'),
(3, 'B'))
expectation = (('foo', 'bar'),
('A', 1),
('C', 7))
result = recordcomplement(table1, table2)
ieq(expectation, result)
def test_recordcomplement_2():
tablea = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False),
('B', 2, False),
('C', 9, True))
tableb = (('bar', 'foo', 'baz'),
(2, 'B', False),
(9, 'A', False),
(3, 'B', True),
(9, 'C', True))
aminusb = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False))
result = recordcomplement(tablea, tableb)
ieq(aminusb, result)
bminusa = (('bar', 'foo', 'baz'),
(3, 'B', True),
(9, 'A', False))
result = recordcomplement(tableb, tablea)
ieq(bminusa, result)
def test_recordcomplement_3():
# make sure we deal with empty tables
table1 = (('foo', 'bar'),
('A', 1),
('B', 2))
table2 = (('bar', 'foo'),)
expectation = (('foo', 'bar'),
('A', 1),
('B', 2))
result = recordcomplement(table1, table2)
ieq(expectation, result)
ieq(expectation, result)
expectation = (('bar', 'foo'),)
result = recordcomplement(table2, table1)
ieq(expectation, result)
ieq(expectation, result)
def test_recordcomplement_4():
# test behaviour with duplicate rows
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('B', 2),
('C', 7))
table2 = (('bar', 'foo'),
(2, 'B'))
result = recordcomplement(table1, table2)
expectation = (('foo', 'bar'),
('A', 1),
('B', 2),
('C', 7))
ieq(expectation, result)
ieq(expectation, result)
# strict behaviour
result = recordcomplement(table1, table2, strict=True)
expectation = (('foo', 'bar'),
('A', 1),
('C', 7))
ieq(expectation, result)
ieq(expectation, result)
def test_recorddiff():
tablea = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False),
('B', 2, False),
('C', 9, True))
tableb = (('bar', 'foo', 'baz'),
(2, 'B', False),
(9, 'A', False),
(3, 'B', True),
(9, 'C', True))
aminusb = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False))
bminusa = (('bar', 'foo', 'baz'),
(3, 'B', True),
(9, 'A', False))
added, subtracted = recorddiff(tablea, tableb)
ieq(aminusb, subtracted)
ieq(bminusa, added)
def _test_intersection_1(intersection_impl):
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('C', 7))
table2 = (('foo', 'bar'),
('A', 9),
('B', 2),
('B', 3))
expectation = (('foo', 'bar'),
('B', 2))
result = intersection_impl(table1, table2)
ieq(expectation, result)
def _test_intersection_2(intersection_impl):
table1 = (('foo', 'bar', 'baz'),
('A', 1, True),
('C', 7, False),
('B', 2, False),
('C', 9, True))
table2 = (('x', 'y', 'z'),
('B', 2, False),
('A', 9, False),
('B', 3, True),
('C', 9, True))
expect = (('foo', 'bar', 'baz'),
('B', 2, False),
('C', 9, True))
table3 = intersection_impl(table1, table2)
ieq(expect, table3)
def _test_intersection_3(intersection_impl):
# empty table
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('C', 7))
table2 = (('foo', 'bar'),)
expectation = (('foo', 'bar'),)
result = intersection_impl(table1, table2)
ieq(expectation, result)
ieq(expectation, result)
def _test_intersection_4(intersection_impl):
# duplicate rows
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('B', 2),
('B', 2),
('C', 7))
table2 = (('foo', 'bar'),
('A', 9),
('B', 2),
('B', 2),
('B', 3))
expectation = (('foo', 'bar'),
('B', 2),
('B', 2))
result = intersection_impl(table1, table2)
ieq(expectation, result)
ieq(expectation, result)
def _test_intersection_empty(intersection_impl):
table1 = (('foo', 'bar'),
('A', 1),
('B', 2),
('C', 7))
table2 = (('foo', 'bar'),)
expectation = (('foo', 'bar'),)
result = intersection_impl(table1, table2)
ieq(expectation, result)
def _test_intersection(intersection_impl):
_test_intersection_1(intersection_impl)
_test_intersection_2(intersection_impl)
_test_intersection_3(intersection_impl)
_test_intersection_4(intersection_impl)
_test_intersection_empty(intersection_impl)
def test_intersection():
_test_intersection(intersection)
def test_hashcomplement():
_test_complement(hashcomplement)
def test_hashintersection():
_test_intersection(hashintersection)