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python-future/tests/test_future/test_range.py at develop · CodeShane/python-future · GitHub
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# -*- coding: utf-8 -*-
"""
Tests for the backported class:`range` class.
"""
from
future
.
builtins
import
range
from
future
.
tests
.
base
import
unittest
from
collections
import
Iterator
,
Sequence
from
operator
import
attrgetter
class
RangeTests
(
unittest
.
TestCase
):
def
test_range
(
self
):
self
.
assertTrue
(
isinstance
(
range
(
0
),
Sequence
))
self
.
assertTrue
(
isinstance
(
reversed
(
range
(
0
)),
Iterator
))
def
test_bool_range
(
self
):
self
.
assertFalse
(
range
(
0
))
self
.
assertTrue
(
range
(
1
))
self
.
assertFalse
(
range
(
1
,
1
))
self
.
assertFalse
(
range
(
5
,
2
))
def
test_equality_range
(
self
):
self
.
assertEqual
(
range
(
7
),
range
(
7
))
self
.
assertEqual
(
range
(
0
),
range
(
1
,
1
))
self
.
assertEqual
(
range
(
0
,
10
,
3
),
range
(
0
,
11
,
3
))
# Use strict equality of attributes when slicing to catch subtle differences
def
assertRangesEqual
(
self
,
r1
,
r2
):
by_attrs
=
attrgetter
(
'start'
,
'stop'
,
'step'
)
self
.
assertEqual
(
by_attrs
(
r1
),
by_attrs
(
r2
))
def
test_slice_empty_range
(
self
):
self
.
assertRangesEqual
(
range
(
0
)[:],
range
(
0
))
self
.
assertRangesEqual
(
range
(
0
)[::
-
1
],
range
(
-
1
,
-
1
,
-
1
))
def
test_slice_overflow_range
(
self
):
r
=
range
(
8
)
self
.
assertRangesEqual
(
r
[
2
:
200
],
range
(
2
,
8
))
self
.
assertRangesEqual
(
r
[
-
200
:
-
2
],
range
(
0
,
6
))
def
test_slice_range
(
self
):
r
=
range
(
-
8
,
8
)
self
.
assertRangesEqual
(
r
[:],
range
(
-
8
,
8
))
self
.
assertRangesEqual
(
r
[:
2
],
range
(
-
8
,
-
6
))
self
.
assertRangesEqual
(
r
[:
-
2
],
range
(
-
8
,
6
))
self
.
assertRangesEqual
(
r
[
2
:],
range
(
-
6
,
8
))
self
.
assertRangesEqual
(
r
[
-
2
:],
range
(
6
,
8
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
],
range
(
-
6
,
6
))
def
test_rev_slice_range
(
self
):
r
=
range
(
-
8
,
8
)
self
.
assertRangesEqual
(
r
[::
-
1
],
range
(
7
,
-
9
,
-
1
))
self
.
assertRangesEqual
(
r
[:
2
:
-
1
],
range
(
7
,
-
6
,
-
1
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
1
],
range
(
7
,
6
,
-
1
))
self
.
assertRangesEqual
(
r
[
2
::
-
1
],
range
(
-
6
,
-
9
,
-
1
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
1
],
range
(
6
,
-
9
,
-
1
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
1
],
range
(
6
,
-
6
,
-
1
))
def
test_slice_rev_range
(
self
):
r
=
range
(
8
,
-
8
,
-
1
)
self
.
assertRangesEqual
(
r
[:],
range
(
8
,
-
8
,
-
1
))
self
.
assertRangesEqual
(
r
[:
2
],
range
(
8
,
6
,
-
1
))
self
.
assertRangesEqual
(
r
[:
-
2
],
range
(
8
,
-
6
,
-
1
))
self
.
assertRangesEqual
(
r
[
2
:],
range
(
6
,
-
8
,
-
1
))
self
.
assertRangesEqual
(
r
[
-
2
:],
range
(
-
6
,
-
8
,
-
1
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
],
range
(
6
,
-
6
,
-
1
))
def
test_rev_slice_rev_range
(
self
):
r
=
range
(
8
,
-
8
,
-
1
)
self
.
assertRangesEqual
(
r
[::
-
1
],
range
(
-
7
,
9
))
self
.
assertRangesEqual
(
r
[:
2
:
-
1
],
range
(
-
7
,
6
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
1
],
range
(
-
7
,
-
6
))
self
.
assertRangesEqual
(
r
[
2
::
-
1
],
range
(
6
,
9
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
1
],
range
(
-
6
,
9
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
1
],
range
(
-
6
,
6
))
def
test_stepped_slice_range
(
self
):
r
=
range
(
-
8
,
8
)
self
.
assertRangesEqual
(
r
[::
2
],
range
(
-
8
,
8
,
2
))
self
.
assertRangesEqual
(
r
[:
2
:
2
],
range
(
-
8
,
-
6
,
2
))
self
.
assertRangesEqual
(
r
[:
-
2
:
2
],
range
(
-
8
,
6
,
2
))
self
.
assertRangesEqual
(
r
[
2
::
2
],
range
(
-
6
,
8
,
2
))
self
.
assertRangesEqual
(
r
[
-
2
::
2
],
range
(
6
,
8
,
2
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
:
2
],
range
(
-
6
,
6
,
2
))
def
test_rev_stepped_slice_range
(
self
):
r
=
range
(
-
8
,
8
)
self
.
assertRangesEqual
(
r
[::
-
2
],
range
(
7
,
-
9
,
-
2
))
self
.
assertRangesEqual
(
r
[:
2
:
-
2
],
range
(
7
,
-
6
,
-
2
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
2
],
range
(
7
,
6
,
-
2
))
self
.
assertRangesEqual
(
r
[
2
::
-
2
],
range
(
-
6
,
-
9
,
-
2
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
2
],
range
(
6
,
-
9
,
-
2
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
2
],
range
(
6
,
-
6
,
-
2
))
def
test_stepped_slice_rev_range
(
self
):
r
=
range
(
8
,
-
8
,
-
1
)
self
.
assertRangesEqual
(
r
[::
2
],
range
(
8
,
-
8
,
-
2
))
self
.
assertRangesEqual
(
r
[:
2
:
2
],
range
(
8
,
6
,
-
2
))
self
.
assertRangesEqual
(
r
[:
-
2
:
2
],
range
(
8
,
-
6
,
-
2
))
self
.
assertRangesEqual
(
r
[
2
::
2
],
range
(
6
,
-
8
,
-
2
))
self
.
assertRangesEqual
(
r
[
-
2
::
2
],
range
(
-
6
,
-
8
,
-
2
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
:
2
],
range
(
6
,
-
6
,
-
2
))
def
test_rev_stepped_slice_rev_range
(
self
):
r
=
range
(
8
,
-
8
,
-
1
)
self
.
assertRangesEqual
(
r
[::
-
2
],
range
(
-
7
,
9
,
2
))
self
.
assertRangesEqual
(
r
[:
2
:
-
2
],
range
(
-
7
,
6
,
2
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
2
],
range
(
-
7
,
-
6
,
2
))
self
.
assertRangesEqual
(
r
[
2
::
-
2
],
range
(
6
,
9
,
2
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
2
],
range
(
-
6
,
9
,
2
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
2
],
range
(
-
6
,
6
,
2
))
def
test_slice_stepped_range
(
self
):
r
=
range
(
-
8
,
8
,
2
)
self
.
assertRangesEqual
(
r
[:],
range
(
-
8
,
8
,
2
))
self
.
assertRangesEqual
(
r
[:
2
],
range
(
-
8
,
-
4
,
2
))
self
.
assertRangesEqual
(
r
[:
-
2
],
range
(
-
8
,
4
,
2
))
self
.
assertRangesEqual
(
r
[
2
:],
range
(
-
4
,
8
,
2
))
self
.
assertRangesEqual
(
r
[
-
2
:],
range
(
4
,
8
,
2
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
],
range
(
-
4
,
4
,
2
))
def
test_rev_slice_stepped_range
(
self
):
r
=
range
(
-
8
,
8
,
2
)
self
.
assertRangesEqual
(
r
[::
-
1
],
range
(
6
,
-
10
,
-
2
))
self
.
assertRangesEqual
(
r
[:
2
:
-
1
],
range
(
6
,
-
4
,
-
2
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
1
],
range
(
6
,
4
,
-
2
))
self
.
assertRangesEqual
(
r
[
2
::
-
1
],
range
(
-
4
,
-
10
,
-
2
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
1
],
range
(
4
,
-
10
,
-
2
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
1
],
range
(
4
,
-
4
,
-
2
))
def
test_slice_rev_stepped_range
(
self
):
r
=
range
(
8
,
-
8
,
-
2
)
self
.
assertRangesEqual
(
r
[:],
range
(
8
,
-
8
,
-
2
))
self
.
assertRangesEqual
(
r
[:
2
],
range
(
8
,
4
,
-
2
))
self
.
assertRangesEqual
(
r
[:
-
2
],
range
(
8
,
-
4
,
-
2
))
self
.
assertRangesEqual
(
r
[
2
:],
range
(
4
,
-
8
,
-
2
))
self
.
assertRangesEqual
(
r
[
-
2
:],
range
(
-
4
,
-
8
,
-
2
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
],
range
(
4
,
-
4
,
-
2
))
def
test_rev_slice_rev_stepped_range
(
self
):
r
=
range
(
8
,
-
8
,
-
2
)
self
.
assertRangesEqual
(
r
[::
-
1
],
range
(
-
6
,
10
,
2
))
self
.
assertRangesEqual
(
r
[:
2
:
-
1
],
range
(
-
6
,
4
,
2
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
1
],
range
(
-
6
,
-
4
,
2
))
self
.
assertRangesEqual
(
r
[
2
::
-
1
],
range
(
4
,
10
,
2
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
1
],
range
(
-
4
,
10
,
2
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
1
],
range
(
-
4
,
4
,
2
))
def
test_stepped_slice_stepped_range
(
self
):
r
=
range
(
-
8
,
8
,
2
)
self
.
assertRangesEqual
(
r
[::
2
],
range
(
-
8
,
8
,
4
))
self
.
assertRangesEqual
(
r
[:
2
:
2
],
range
(
-
8
,
-
4
,
4
))
self
.
assertRangesEqual
(
r
[:
-
2
:
2
],
range
(
-
8
,
4
,
4
))
self
.
assertRangesEqual
(
r
[
2
::
2
],
range
(
-
4
,
8
,
4
))
self
.
assertRangesEqual
(
r
[
-
2
::
2
],
range
(
4
,
8
,
4
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
:
2
],
range
(
-
4
,
4
,
4
))
def
test_rev_stepped_slice_stepped_range
(
self
):
r
=
range
(
-
8
,
8
,
2
)
self
.
assertRangesEqual
(
r
[::
-
2
],
range
(
6
,
-
10
,
-
4
))
self
.
assertRangesEqual
(
r
[:
2
:
-
2
],
range
(
6
,
-
4
,
-
4
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
2
],
range
(
6
,
4
,
-
4
))
self
.
assertRangesEqual
(
r
[
2
::
-
2
],
range
(
-
4
,
-
10
,
-
4
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
2
],
range
(
4
,
-
10
,
-
4
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
2
],
range
(
4
,
-
4
,
-
4
))
def
test_stepped_slice_rev_stepped_range
(
self
):
r
=
range
(
8
,
-
8
,
-
2
)
self
.
assertRangesEqual
(
r
[::
2
],
range
(
8
,
-
8
,
-
4
))
self
.
assertRangesEqual
(
r
[:
2
:
2
],
range
(
8
,
4
,
-
4
))
self
.
assertRangesEqual
(
r
[:
-
2
:
2
],
range
(
8
,
-
4
,
-
4
))
self
.
assertRangesEqual
(
r
[
2
::
2
],
range
(
4
,
-
8
,
-
4
))
self
.
assertRangesEqual
(
r
[
-
2
::
2
],
range
(
-
4
,
-
8
,
-
4
))
self
.
assertRangesEqual
(
r
[
2
:
-
2
:
2
],
range
(
4
,
-
4
,
-
4
))
def
test_rev_stepped_slice_rev_stepped_range
(
self
):
r
=
range
(
8
,
-
8
,
-
2
)
self
.
assertRangesEqual
(
r
[::
-
2
],
range
(
-
6
,
10
,
4
))
self
.
assertRangesEqual
(
r
[:
2
:
-
2
],
range
(
-
6
,
4
,
4
))
self
.
assertRangesEqual
(
r
[:
-
2
:
-
2
],
range
(
-
6
,
-
4
,
4
))
self
.
assertRangesEqual
(
r
[
2
::
-
2
],
range
(
4
,
10
,
4
))
self
.
assertRangesEqual
(
r
[
-
2
::
-
2
],
range
(
-
4
,
10
,
4
))
self
.
assertRangesEqual
(
r
[
-
2
:
2
:
-
2
],
range
(
-
4
,
4
,
4
))
def
test_slice_zero_step
(
self
):
msg
=
'^slice step cannot be zero$'
with
self
.
assertRaisesRegexp
(
ValueError
,
msg
):
range
(
8
)[::
0
]
def
test_properties
(
self
):
# Exception string differs between PY2/3
r
=
range
(
0
)
with
self
.
assertRaises
(
AttributeError
):
r
.
start
=
0
with
self
.
assertRaises
(
AttributeError
):
r
.
stop
=
0
with
self
.
assertRaises
(
AttributeError
):
r
.
step
=
0
if
__name__
==
'__main__'
:
unittest
.
main
()
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