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""" Test functions for limits module.
"""
from numpy.testing import *
set_package_path()
import numpy.lib;reload(numpy.lib)
from numpy.lib.getlimits import finfo, iinfo
from numpy import single,double,longdouble
import numpy as N
restore_path()
##################################################
class test_python_float(NumpyTestCase):
def check_singleton(self):
ftype = finfo(float)
ftype2 = finfo(float)
assert_equal(id(ftype),id(ftype2))
class test_single(NumpyTestCase):
def check_singleton(self):
ftype = finfo(single)
ftype2 = finfo(single)
assert_equal(id(ftype),id(ftype2))
class test_double(NumpyTestCase):
def check_singleton(self):
ftype = finfo(double)
ftype2 = finfo(double)
assert_equal(id(ftype),id(ftype2))
class test_longdouble(NumpyTestCase):
def check_singleton(self,level=2):
ftype = finfo(longdouble)
ftype2 = finfo(longdouble)
assert_equal(id(ftype),id(ftype2))
class test_iinfo(NumpyTestCase):
def check_basic(self):
dts = zip(['i1', 'i2', 'i4', 'i8',
'u1', 'u2', 'u4', 'u8'],
[N.int8, N.int16, N.int32, N.int64,
N.uint8, N.uint16, N.uint32, N.uint64])
for dt1, dt2 in dts:
assert_equal(iinfo(dt1).min, iinfo(dt2).min)
assert_equal(iinfo(dt1).max, iinfo(dt2).max)
self.assertRaises(ValueError, iinfo, 'f4')
def check_unsigned_max(self):
types = N.sctypes['uint']
for T in types:
assert_equal(iinfo(T).max, T(-1))
if __name__ == "__main__":
NumpyTest().run()
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