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import sys
import unittest
from itertools import pairwise
from random import getrandbits, randint, randrange
from bitarray import bitarray
from bitarray.util import intervals
from bitarray.test_bitarray import Util
if len(sys.argv) != 2 or sys.argv[1] not in ('flips', 'ones', '-'):
sys.exit("Argument 'flips' or 'ones' expected.")
MODE = sys.argv[1]
del sys.argv[1]
class TestsSparse(unittest.TestCase, Util):
def check(self, s, a):
if MODE == 'flips':
self.assertTrue(len(s.flips) > 0)
self.assertTrue(s.flips[0] >= 0)
for x, y in pairwise(s.flips):
self.assertTrue(y > x)
self.assertEqual(s.to_bitarray(), a)
elif MODE == 'ones':
if s.ones:
self.assertTrue(s.ones[-1] < s.n)
for x, y in pairwise(s.ones):
self.assertTrue(y > x)
self.assertEqual(s.to_bitarray(), a)
else:
self.assertEqual(s, a)
def test_init(self):
if MODE != '-':
for n in 0, 1, 2, 3, 99:
a = bitarray(n)
a.setall(0)
t = BitArray(n)
self.check(t, a)
for s in '', '0', '1', '01110001':
a = bitarray(s)
t = BitArray(s)
self.check(t, a)
def test_repr(self):
s = BitArray('01001')
if MODE != '-':
self.assertEqual(repr(s), "SparseBitarray('01001')")
def test_len(self):
for a in self.randombitarrays():
s = BitArray(a)
self.assertEqual(len(s), len(a))
def test_getitem_index(self):
for a in self.randombitarrays(start=1):
s = BitArray(a)
for i in range(len(a)):
self.assertEqual(s[i], a[i])
def test_getitem_slice(self):
for a in self.randombitarrays():
s = BitArray(a)
i = randint(0, len(s))
j = randint(0, len(s))
self.check(s[i:j], a[i:j])
def test_setitem_index(self):
for a in self.randombitarrays(start=1):
s = BitArray(a)
for _ in range(10):
i = randrange(len(s))
v = getrandbits(1)
s[i] = a[i] = v
self.check(s, a)
def test_setitem_slice(self):
for a in self.randombitarrays():
s = BitArray(a)
for _ in range(10):
i = randint(0, len(s))
j = randint(0, len(s))
v = getrandbits(1)
s[i:j] = a[i:j] = v
self.check(s, a)
def test_delitem_index(self):
for a in self.randombitarrays(start=1):
s = BitArray(a)
i = randrange(len(s))
del s[i]
del a[i]
self.check(s, a)
def test_delitem_slice(self):
for a in self.randombitarrays():
s = BitArray(a)
i = randint(0, len(s))
j = randint(0, len(s))
del s[i:j]
del a[i:j]
self.check(s, a)
def test_append(self):
for a in self.randombitarrays():
s = BitArray()
for v in a:
s.append(v)
self.check(s, a)
def test_find(self):
for a in self.randombitarrays():
s = BitArray(a)
for v in 0, 1:
self.assertEqual(s.find(v), a.find(v))
def test_extent(self):
for aa in self.randombitarrays():
for b in self.randombitarrays():
a = aa.copy()
s = BitArray(a)
t = BitArray(b)
s.extend(t)
a.extend(b)
self.check(s, a)
s = BitArray(aa)
s.extend(s)
self.check(s, 2 * aa)
def test_count(self):
for a in self.randombitarrays():
s = BitArray(a)
for v in 0, 1:
self.assertEqual(s.count(v), a.count(v))
def test_insert(self):
for a in self.randombitarrays():
s = BitArray(a)
i = randint(-2, len(s) + 2)
v = getrandbits(1)
s.insert(i, v)
a.insert(i, v)
self.check(s, a)
def test_invert(self):
for a in self.randombitarrays():
s = BitArray(a)
s.invert()
a.invert()
self.check(s, a)
def test_pop(self):
for a in self.randombitarrays(start=1):
s = BitArray(a)
i = randrange(-len(a), len(a))
self.assertEqual(s.pop(i), a.pop(i))
self.check(s, a)
def test_remove(self):
for a in self.randombitarrays():
s = BitArray(a)
v = getrandbits(1)
error = 0
try:
s.remove(v)
except ValueError:
error += 1
try:
a.remove(v)
except ValueError:
error += 1
self.assertTrue(error % 2 == 0)
self.check(s, a)
def test_reverse(self):
for a in self.randombitarrays():
s = BitArray(a)
s.reverse()
a.reverse()
self.check(s, a)
def test_sort(self):
for a in self.randombitarrays():
s = BitArray(a)
for rev in 0, 1:
s.sort(rev)
a.sort(rev)
self.check(s, a)
if MODE == 'flips':
def test_flips(self):
for a in self.randombitarrays():
lst = [] if a and a[0] == 0 else [0]
lst.extend(t[2] for t in intervals(a))
s = BitArray(a)
self.assertEqual(s.flips, lst)
def test_reduce(self):
for a, b in [
([0], [0]),
([0, 0], [0]),
([3, 7], [3, 7]),
([3, 7, 7], [3, 7]),
([3, 3, 7, 7, 7], [7]),
([3, 3, 3, 7, 7], [3, 7]),
([0, 0, 2, 2], [2]),
([0, 2, 2, 2, 2, 3], [0, 3]),
([0, 0, 0, 1, 1, 2, 2, 2, 3, 4, 4, 4, 4, 5],
[0, 2, 3, 5]),
]:
s = BitArray()
s.flips = a
s._reduce()
self.assertEqual(s.flips, b)
if __name__ == '__main__':
if MODE == '-':
BitArray = bitarray
else:
BitArray = __import__(MODE).SparseBitarray # type: ignore
unittest.main()
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