def assertRandomItems(self, *, total, take_factor, seed):
import random
ls = list(range(total))
rng = random.Random(seed)
rng.shuffle(ls)
ls_all = ls[:]
del ls[int(total * take_factor):]
r = RangeTree(min=0, max=total - 1)
for pass_nr in range(4):
self.assertEqual(r.is_empty(), True)
if pass_nr == 0:
pass
elif pass_nr == 1:
ls.reverse()
elif pass_nr == 2:
ls.sort()
elif pass_nr == 3:
ls.reverse()
for i in ls:
r.take(i)
items_a = set(ls)
items_b = set(range(1, total + 1)) - items_a
for i in sorted(items_a):
self.assertEqual(r.has(i), True)
for i in sorted(items_b):
self.assertEqual(r.has(i), False)
# test retake
for i in ls_all:
test = r.retake(i)
self.assertEqual(test, i not in ls)
for i in ls_all:
r.release(i)
def test_complex(self):
"""
Test complex pairs
"""
r = RangeTree(min=-10, max=11)
# 2 passes on the same data structure.
for _ in range(2):
self.assertEqual(r.is_empty(), True)
for i in (-10, 10, 11):
r.take(i)
self.assertEqual(r.is_empty(), False)
self.assertEqual(list(r.range_iter()), [(-10, -10), (10, 11)])
for i in (-8, -7, 8):
r.take(i)
self.assertEqual(list(r.range_iter()), [(-10, -10), (-8, -7),
(8, 8), (10, 11)])
for i in (-9, 9):
r.take(i)
self.assertEqual(list(r.range_iter()), [(-10, -7), (8, 11)])
for i in (-9, 9):
r.release(i)
self.assertEqual(list(r.range_iter()), [(-10, -10), (-8, -7),
(8, 8), (10, 11)])
for i in (8, 10, 11):
r.release(i)
self.assertEqual(list(r.range_iter()), [(-10, -10), (-8, -7)])
for i in (-10, -8, -7):
r.release(i)
# empty for next pass
self.assertEqual(list(r.range_iter()), [])
def test_many(self):
r = RangeTree(min=0, max=9)
# 2 passes to be sure
for _ in range(2):
self.assertEqual(r.is_empty(), True)
ls = list(range(0, 10, 2))
for i in ls:
r.take(i)
self.assertEqual(r.is_empty(), False)
self.assertEqual(r.has(ls[0] - 0), True)
self.assertEqual(r.has(ls[0] - 1), False)
self.assertEqual(r.has(ls[-1] + 0), True)
self.assertEqual(r.has(ls[-1] + 1), False)
self.assertEqual(
list(r.range_iter()),
[(0, 0), (2, 2), (4, 4), (6, 6), (8, 8)],
)
r.release(ls.pop(0))
r.release(ls.pop(-1))
r.take(3)
r.take(5)
self.assertEqual(list(r.range_iter()), [(2, 6)])
r.release(2)
r.release(6)
self.assertEqual(list(r.range_iter()), [(3, 5)])
r.release(4)
self.assertEqual(list(r.range_iter()), [(3, 3), (5, 5)])
for i in (3, 5):
r.release(i)
self.assertEqual(list(r.range_iter()), [])