def test_basic(self):
     dts = list(zip(['i1', 'i2', 'i4', 'i8',
                'u1', 'u2', 'u4', 'u8'],
               [np.int8, np.int16, np.int32, np.int64,
                np.uint8, np.uint16, np.uint32, np.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 test_basic(self):
     dts = list(zip(['i1', 'i2', 'i4', 'i8',
                'u1', 'u2', 'u4', 'u8'],
               [np.int8, np.int16, np.int32, np.int64,
                np.uint8, np.uint16, np.uint32, np.uint64]))
     for dt1, dt2 in dts:
         for attr in ('bits', 'min', 'max'):
             assert_equal(getattr(iinfo(dt1), attr),
                          getattr(iinfo(dt2), attr), attr)
     assert_raises(ValueError, iinfo, 'f4')

def test_instances():
    iinfo(10)
    finfo(3.0)

 def test_unsigned_max(self):
     types = np.sctypes['uint']
     for T in types:
         assert_equal(iinfo(T).max, T(-1))

    ones,
    asarray,
    where,
    dtype as np_dtype,
    less,
    int8,
    int16,
    int32,
    int64,
    empty,
    promote_types,
)
from numpy.core import iinfo


i1 = iinfo(int8)
i2 = iinfo(int16)
i4 = iinfo(int32)


def _min_int(low, high):
    """ get small int that fits the range """
    if high <= i1.max and low >= i1.min:
        return int8
    if high <= i2.max and low >= i2.min:
        return int16
    if high <= i4.max and low >= i4.min:
        return int32
    return int64