def test_hypot_pow_nomod(self, a, b):
# "a ** b": detect overflows and ValueErrors
if b < 0:
expected = ValueError
elif b > 128 and not (-1 <= a <= 1):
expected = OverflowError
else:
expected = a**b
if expected != intmask(expected):
expected = OverflowError
try:
result = iobj._pow(self.space, a, b, 0)
except ValueError:
result = ValueError
except OverflowError:
result = OverflowError
assert result == expected
def test_hypot_pow(self, a, b, c):
if c == 0:
return
#
# "pow(a, b, c)": if b < 0, should get an app-level ValueError.
# Otherwise, should always work except if c == -maxint-1
if b < 0:
expected = "app-level ValueError"
elif b > 0 and c == -sys.maxint-1:
expected = OverflowError
else:
expected = pow(a, b, c)
try:
result = iobj._pow(self.space, a, b, c)
except OperationError as e:
assert ('ValueError: pow() 2nd argument cannot be negative '
'when 3rd argument specified' == e.errorstr(self.space))
result = "app-level ValueError"
except OverflowError:
result = OverflowError
assert result == expected