circuitpython/tests/extmod/urandom_extra.py

80 lines
1.5 KiB
Python

try:
import urandom as random
except ImportError:
try:
import random
except ImportError:
print("SKIP")
raise SystemExit
try:
random.randint
except AttributeError:
print('SKIP')
raise SystemExit
print('randrange')
for i in range(50):
assert 0 <= random.randrange(4) < 4
assert 2 <= random.randrange(2, 6) < 6
assert -2 <= random.randrange(-2, 2) < 2
assert random.randrange(1, 9, 2) in (1, 3, 5, 7)
assert random.randrange(2, 1, -1) in (1, 2)
# empty range
try:
random.randrange(0)
except ValueError:
print('ValueError')
# empty range
try:
random.randrange(2, 1)
except ValueError:
print('ValueError')
# zero step
try:
random.randrange(2, 1, 0)
except ValueError:
print('ValueError')
# empty range
try:
random.randrange(2, 1, 1)
except ValueError:
print('ValueError')
print('randint')
for i in range(50):
assert 0 <= random.randint(0, 4) <= 4
assert 2 <= random.randint(2, 6) <= 6
assert -2 <= random.randint(-2, 2) <= 2
# empty range
try:
random.randint(2, 1)
except ValueError:
print('ValueError')
print('choice')
lst = [1, 2, 5, 6]
for i in range(50):
assert random.choice(lst) in lst
# empty sequence
try:
random.choice([])
except IndexError:
print('IndexError')
print('random')
for i in range(50):
assert 0 <= random.random() < 1
print('uniform')
for i in range(50):
assert 0 <= random.uniform(0, 4) <= 4
assert 2 <= random.uniform(2, 6) <= 6
assert -2 <= random.uniform(-2, 2) <= 2