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try:
import urandom as random
except ImportError:
try:
import random
except ImportError:
print("SKIP")
raise SystemExit
# check getrandbits returns a value within the bit range
for b in (1, 2, 3, 4, 16, 32):
for i in range(50):
assert random.getrandbits(b) < (1 << b)
# check that seed(0) gives a non-zero value
random.seed(0)
print(random.getrandbits(16) != 0)
# check that PRNG is repeatable
random.seed(1)
r = random.getrandbits(16)
random.seed(1)
print(random.getrandbits(16) == r)
# check that it throws an error for zero bits
try:
random.getrandbits(0)
except ValueError:
print('ValueError')
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