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test_kenjutsu.py
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test_kenjutsu.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
__author__ = "John Kirkham <kirkhamj@janelia.hhmi.org>"
__date__ = "$Oct 02, 2016 15:38:07 EDT$"
import doctest
import itertools
import math
import operator
import sys
import unittest
from kenjutsu import kenjutsu
try:
irange = xrange
except NameError:
irange = range
# Load doctests from `kenjutsu`.
def load_tests(loader, tests, ignore):
tests.addTests(doctest.DocTestSuite(kenjutsu))
return tests
class TestKenjutsu(unittest.TestCase):
def setUp(self):
pass
def test_reformat_slice(self):
with self.assertRaises(ValueError) as e:
kenjutsu.reformat_slice(None)
self.assertEqual(
str(e.exception),
"Expected a `slice` type. Instead got `None`."
)
with self.assertRaises(ValueError) as e:
kenjutsu.reformat_slice(slice(None, None, 0))
self.assertEqual(
str(e.exception),
"Slice cannot have a step size of `0`."
)
with self.assertRaises(ValueError) as e:
kenjutsu.reformat_slice([None])
self.assertEqual(
str(e.exception),
"Arbitrary sequences not permitted."
" All elements must be of integral type."
)
for size in [10, 11, 12]:
excess = size + 3
each_range = range(size)
for start in itertools.chain([None], irange(-excess, excess)):
for stop in itertools.chain([None], irange(-excess, excess)):
for step in itertools.chain(irange(-excess, excess)):
step = None if step == 0 else step
a_slice = slice(start, stop, step)
rf_slice = kenjutsu.reformat_slice(a_slice)
self.assertEqual(
each_range[a_slice],
each_range[rf_slice]
)
rf_slice = kenjutsu.reformat_slice(a_slice, size)
self.assertEqual(
each_range[a_slice],
each_range[rf_slice]
)
new_start = rf_slice.start
new_stop = rf_slice.stop
new_step = rf_slice.step
if (new_step is not None and
new_step < 0 and
new_stop is None):
new_stop = -1
l = float(new_stop - new_start)/float(new_step)
self.assertEqual(
int(math.ceil(l)),
len(each_range[a_slice])
)
a_slice = list()
a_slice.append(0 if start is None else start)
a_slice.append(0 if stop is None else stop)
a_slice.append(0 if step is None else step)
a_op = operator.itemgetter(*a_slice)
expected_result = None
try:
expected_result = a_op(each_range)
except IndexError:
pass
if expected_result is not None:
rf_slice = kenjutsu.reformat_slice(a_slice)
rf_op = operator.itemgetter(*rf_slice)
self.assertEqual(
expected_result,
rf_op(each_range)
)
rf_slice = kenjutsu.reformat_slice(a_slice, size)
rf_op = operator.itemgetter(*rf_slice)
self.assertEqual(
expected_result,
rf_op(each_range)
)
else:
kenjutsu.reformat_slice(a_slice)
with self.assertRaises(IndexError):
kenjutsu.reformat_slice(a_slice, size)
if start is not None:
a_slice = start
expected_result = None
try:
expected_result = each_range[a_slice]
except IndexError:
pass
if expected_result is not None:
rf_slice = kenjutsu.reformat_slice(a_slice)
self.assertEqual(
expected_result,
each_range[rf_slice]
)
rf_slice = kenjutsu.reformat_slice(a_slice, size)
self.assertEqual(
expected_result,
each_range[rf_slice]
)
else:
kenjutsu.reformat_slice(a_slice)
with self.assertRaises(IndexError):
kenjutsu.reformat_slice(a_slice, size)
rf_slice = kenjutsu.reformat_slice(Ellipsis)
self.assertEqual(
each_range[:],
each_range[rf_slice]
)
rf_slice = kenjutsu.reformat_slice(Ellipsis, size)
self.assertEqual(
each_range[:],
each_range[rf_slice]
)
rf_slice = kenjutsu.reformat_slice(tuple())
self.assertEqual(
each_range[:],
each_range[rf_slice]
)
rf_slice = kenjutsu.reformat_slice(tuple(), size)
self.assertEqual(
each_range[:],
each_range[rf_slice]
)
start = rf_slice.start
stop = rf_slice.stop
step = rf_slice.step
if step is not None and step < 0 and stop is None:
stop = -1
l = float(stop - start)/float(step)
self.assertEqual(
int(math.ceil(l)),
len(each_range[:])
)
def test_reformat_slices(self):
with self.assertRaises(ValueError) as e:
kenjutsu.reformat_slices(
(slice(None), slice(None), Ellipsis), (1,)
)
self.assertEqual(
str(e.exception),
"Shape must be as large or larger than the number of slices"
" without the Ellipsis."
)
with self.assertRaises(ValueError) as e:
kenjutsu.reformat_slices(
(Ellipsis, Ellipsis), (1,)
)
self.assertEqual(
str(e.exception),
"Only one Ellipsis is permitted. Found multiple."
)
rf_slice = kenjutsu.reformat_slices(slice(None))
self.assertEqual(
rf_slice,
(slice(0, None, 1),)
)
rf_slice = kenjutsu.reformat_slices((slice(None),))
self.assertEqual(
rf_slice,
(slice(0, None, 1),)
)
rf_slice = kenjutsu.reformat_slices(Ellipsis)
self.assertEqual(
rf_slice,
(Ellipsis,)
)
rf_slice = kenjutsu.reformat_slices(Ellipsis, 10)
self.assertEqual(
rf_slice,
(slice(0, 10, 1),)
)
rf_slice = kenjutsu.reformat_slices(tuple())
self.assertEqual(
rf_slice,
(Ellipsis,)
)
rf_slice = kenjutsu.reformat_slices(tuple(), 10)
self.assertEqual(
rf_slice,
(slice(0, 10, 1),)
)
rf_slice = kenjutsu.reformat_slices(slice(None), 10)
self.assertEqual(
rf_slice,
(slice(0, 10, 1),)
)
rf_slice = kenjutsu.reformat_slices((slice(None),), 10)
self.assertEqual(
rf_slice,
(slice(0, 10, 1),)
)
rf_slice = kenjutsu.reformat_slices((
-1,
slice(None),
slice(3, None),
slice(None, 5),
slice(None, None, 2)
))
self.assertEqual(
rf_slice,
(
-1,
slice(0, None, 1),
slice(3, None, 1),
slice(0, 5, 1),
slice(0, None, 2)
)
)
rf_slice = kenjutsu.reformat_slices(
(
-1,
slice(None),
slice(3, None),
slice(None, 5),
slice(None, None, 2),
[-1, -2, -1, 1, 5]
),
(12, 10, 13, 15, 20, 10)
)
self.assertEqual(
rf_slice,
(
11,
slice(0, 10, 1),
slice(3, 13, 1),
slice(0, 5, 1),
slice(0, 20, 2),
[9, 8, 9, 1, 5]
)
)
rf_slice = kenjutsu.reformat_slices(
Ellipsis,
(2, 3, 4, 5)
)
self.assertEqual(
rf_slice,
(
slice(0, 2, 1),
slice(0, 3, 1),
slice(0, 4, 1),
slice(0, 5, 1)
)
)
rf_slice = kenjutsu.reformat_slices(
(
Ellipsis,
slice(0, 1)
),
(2, 3, 4, 5)
)
self.assertEqual(
rf_slice,
(
slice(0, 2, 1),
slice(0, 3, 1),
slice(0, 4, 1),
slice(0, 1, 1)
)
)
rf_slice = kenjutsu.reformat_slices(
(
slice(0, 1),
Ellipsis
),
(2, 3, 4, 5)
)
self.assertEqual(
rf_slice,
(
slice(0, 1, 1),
slice(0, 3, 1),
slice(0, 4, 1),
slice(0, 5, 1)
)
)
rf_slice = kenjutsu.reformat_slices(
(
slice(0, 1),
Ellipsis,
slice(0, 1)
),
(2, 3, 4, 5)
)
self.assertEqual(
rf_slice,
(
slice(0, 1, 1),
slice(0, 3, 1),
slice(0, 4, 1),
slice(0, 1, 1)
)
)
rf_slice = kenjutsu.reformat_slices(
(
slice(0, 1),
Ellipsis,
slice(0, 1),
slice(0, 1),
slice(0, 1)
),
(2, 3, 4, 5)
)
self.assertEqual(
rf_slice,
(
slice(0, 1, 1),
slice(0, 1, 1),
slice(0, 1, 1),
slice(0, 1, 1)
)
)
def test_len_slice(self):
with self.assertRaises(kenjutsu.UnknownSliceLengthException):
kenjutsu.len_slice(slice(None))
for size in [10, 11, 12]:
excess = size + 3
each_range = range(size)
for start in itertools.chain([None], irange(-excess, excess)):
for stop in itertools.chain([None], irange(-excess, excess)):
for step in itertools.chain(irange(-excess, excess)):
step = None if step == 0 else step
a_slice = slice(start, stop, step)
l = kenjutsu.len_slice(a_slice, size)
self.assertEqual(
l,
len(each_range[a_slice])
)
a_slice = list()
a_slice.append(0 if start is None else start)
a_slice.append(0 if stop is None else stop)
a_slice.append(0 if step is None else step)
a_op = operator.itemgetter(*a_slice)
expected_result = None
try:
expected_result = a_op(each_range)
except IndexError:
pass
if expected_result is not None:
l = kenjutsu.len_slice(a_slice, size)
self.assertEqual(len(expected_result), l)
if start is not None:
a_slice = start
with self.assertRaises(TypeError):
kenjutsu.len_slice(a_slice, size)
self.assertEqual(
kenjutsu.len_slice(Ellipsis, size),
len(each_range[:])
)
self.assertEqual(
kenjutsu.len_slice(tuple(), size),
len(each_range[:])
)
def test_len_slices(self):
with self.assertRaises(kenjutsu.UnknownSliceLengthException):
kenjutsu.len_slices((
slice(None),
slice(3, None),
slice(None, 5),
slice(None, None, 2)
))
l = kenjutsu.len_slices(Ellipsis, 10)
self.assertEqual(
l,
(10,)
)
l = kenjutsu.len_slices(tuple(), 10)
self.assertEqual(
l,
(10,)
)
l = kenjutsu.len_slices(slice(None), 10)
self.assertEqual(
l,
(10,)
)
l = kenjutsu.len_slices((slice(None),), 10)
self.assertEqual(
l,
(10,)
)
l = kenjutsu.len_slices(
(
-1,
slice(None),
slice(3, None),
slice(None, 5),
slice(None, None, 2),
[-1, -2, -1, 1, 5]
),
(12, 10, 13, 15, 20, 10)
)
self.assertEqual(
l,
(10, 10, 5, 10, 5)
)
l = kenjutsu.len_slices(
Ellipsis,
(2, 3, 4, 5)
)
self.assertEqual(
l,
(2, 3, 4, 5)
)
l = kenjutsu.len_slices(
(
Ellipsis,
slice(0, 1)
),
(2, 3, 4, 5)
)
self.assertEqual(
l,
(2, 3, 4, 1)
)
l = kenjutsu.len_slices(
(
slice(0, 1),
Ellipsis
),
(2, 3, 4, 5)
)
self.assertEqual(
l,
(1, 3, 4, 5)
)
l = kenjutsu.len_slices(
(
slice(0, 1),
Ellipsis,
slice(0, 1)
),
(2, 3, 4, 5)
)
self.assertEqual(
l,
(1, 3, 4, 1)
)
l = kenjutsu.len_slices(
(
slice(0, 1),
Ellipsis,
slice(0, 1),
slice(0, 1),
slice(0, 1)
),
(2, 3, 4, 5)
)
self.assertEqual(
l,
(1, 1, 1, 1)
)
def test_split_blocks(self):
with self.assertRaises(ValueError) as e:
kenjutsu.split_blocks((1,), (1, 2), (1, 2, 3))
self.assertEqual(
str(e.exception),
"The dimensions of `space_shape`, `block_shape`, and `block_halo`"
" should be the same."
)
with self.assertRaises(ValueError) as e:
kenjutsu.split_blocks((1,), (1, 2))
self.assertEqual(
str(e.exception),
"The dimensions of `space_shape` and `block_shape` should be the"
" same."
)
blocks = kenjutsu.split_blocks((2,), (1,))
self.assertEqual(
blocks,
([(slice(0, 1, 1),), (slice(1, 2, 1),)],
[(slice(0, 1, 1),), (slice(1, 2, 1),)],
[(slice(0, 1, 1),), (slice(0, 1, 1),)])
)
blocks = kenjutsu.split_blocks((2,), (-1,))
self.assertEqual(
blocks,
([(slice(0, 2, 1),)],
[(slice(0, 2, 1),)],
[(slice(0, 2, 1),)])
)
blocks = kenjutsu.split_blocks((2, 3,), (1, 1,))
self.assertEqual(
blocks,
([(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(1, 2, 1)),
(slice(0, 1, 1), slice(2, 3, 1)),
(slice(1, 2, 1), slice(0, 1, 1)),
(slice(1, 2, 1), slice(1, 2, 1)),
(slice(1, 2, 1), slice(2, 3, 1))],
[(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(1, 2, 1)),
(slice(0, 1, 1), slice(2, 3, 1)),
(slice(1, 2, 1), slice(0, 1, 1)),
(slice(1, 2, 1), slice(1, 2, 1)),
(slice(1, 2, 1), slice(2, 3, 1))],
[(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1))])
)
blocks = kenjutsu.split_blocks((2, 3,), (1, 1,), (0, 0))
self.assertEqual(
blocks,
([(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(1, 2, 1)),
(slice(0, 1, 1), slice(2, 3, 1)),
(slice(1, 2, 1), slice(0, 1, 1)),
(slice(1, 2, 1), slice(1, 2, 1)),
(slice(1, 2, 1), slice(2, 3, 1))],
[(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(1, 2, 1)),
(slice(0, 1, 1), slice(2, 3, 1)),
(slice(1, 2, 1), slice(0, 1, 1)),
(slice(1, 2, 1), slice(1, 2, 1)),
(slice(1, 2, 1), slice(2, 3, 1))],
[(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1)),
(slice(0, 1, 1), slice(0, 1, 1))])
)
blocks = kenjutsu.split_blocks((10, 12,), (3, 2,), (4, 3,))
self.assertEqual(
blocks,
([(slice(0, 3, 1), slice(0, 2, 1)),
(slice(0, 3, 1), slice(2, 4, 1)),
(slice(0, 3, 1), slice(4, 6, 1)),
(slice(0, 3, 1), slice(6, 8, 1)),
(slice(0, 3, 1), slice(8, 10, 1)),
(slice(0, 3, 1), slice(10, 12, 1)),
(slice(3, 6, 1), slice(0, 2, 1)),
(slice(3, 6, 1), slice(2, 4, 1)),
(slice(3, 6, 1), slice(4, 6, 1)),
(slice(3, 6, 1), slice(6, 8, 1)),
(slice(3, 6, 1), slice(8, 10, 1)),
(slice(3, 6, 1), slice(10, 12, 1)),
(slice(6, 9, 1), slice(0, 2, 1)),
(slice(6, 9, 1), slice(2, 4, 1)),
(slice(6, 9, 1), slice(4, 6, 1)),
(slice(6, 9, 1), slice(6, 8, 1)),
(slice(6, 9, 1), slice(8, 10, 1)),
(slice(6, 9, 1), slice(10, 12, 1)),
(slice(9, 10, 1), slice(0, 2, 1)),
(slice(9, 10, 1), slice(2, 4, 1)),
(slice(9, 10, 1), slice(4, 6, 1)),
(slice(9, 10, 1), slice(6, 8, 1)),
(slice(9, 10, 1), slice(8, 10, 1)),
(slice(9, 10, 1), slice(10, 12, 1))],
[(slice(0, 7, 1), slice(0, 5, 1)),
(slice(0, 7, 1), slice(0, 7, 1)),
(slice(0, 7, 1), slice(1, 9, 1)),
(slice(0, 7, 1), slice(3, 11, 1)),
(slice(0, 7, 1), slice(5, 12, 1)),
(slice(0, 7, 1), slice(7, 12, 1)),
(slice(0, 10, 1), slice(0, 5, 1)),
(slice(0, 10, 1), slice(0, 7, 1)),
(slice(0, 10, 1), slice(1, 9, 1)),
(slice(0, 10, 1), slice(3, 11, 1)),
(slice(0, 10, 1), slice(5, 12, 1)),
(slice(0, 10, 1), slice(7, 12, 1)),
(slice(2, 10, 1), slice(0, 5, 1)),
(slice(2, 10, 1), slice(0, 7, 1)),
(slice(2, 10, 1), slice(1, 9, 1)),
(slice(2, 10, 1), slice(3, 11, 1)),
(slice(2, 10, 1), slice(5, 12, 1)),
(slice(2, 10, 1), slice(7, 12, 1)),
(slice(5, 10, 1), slice(0, 5, 1)),
(slice(5, 10, 1), slice(0, 7, 1)),
(slice(5, 10, 1), slice(1, 9, 1)),
(slice(5, 10, 1), slice(3, 11, 1)),
(slice(5, 10, 1), slice(5, 12, 1)),
(slice(5, 10, 1), slice(7, 12, 1))],
[(slice(0, 3, 1), slice(0, 2, 1)),
(slice(0, 3, 1), slice(2, 4, 1)),
(slice(0, 3, 1), slice(3, 5, 1)),
(slice(0, 3, 1), slice(3, 5, 1)),
(slice(0, 3, 1), slice(3, 5, 1)),
(slice(0, 3, 1), slice(3, 5, 1)),
(slice(3, 6, 1), slice(0, 2, 1)),
(slice(3, 6, 1), slice(2, 4, 1)),
(slice(3, 6, 1), slice(3, 5, 1)),
(slice(3, 6, 1), slice(3, 5, 1)),
(slice(3, 6, 1), slice(3, 5, 1)),
(slice(3, 6, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(0, 2, 1)),
(slice(4, 7, 1), slice(2, 4, 1)),
(slice(4, 7, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(0, 2, 1)),
(slice(4, 7, 1), slice(2, 4, 1)),
(slice(4, 7, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(3, 5, 1)),
(slice(4, 7, 1), slice(3, 5, 1))])
)
def tearDown(self):
pass
if __name__ == '__main__':
sys.exit(unittest.main())