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Name	Size	Modified	Perms
📁 ..	-	10/28/2024 05:59:26 AM	rwxr-xr-x
📄 __init__.py	0 bytes	10/28/2024 05:59:24 AM	rw-r--r--
📁 __pycache__	-	10/28/2024 05:59:26 AM	rwxr-xr-x
📄 _locales.py	2.14 KB	10/28/2024 05:59:24 AM	rw-r--r--
📁 data	-	10/28/2024 05:59:26 AM	rwxr-xr-x
📄 test__exceptions.py	1.96 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_abc.py	2.27 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_api.py	20.32 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_arrayprint.py	33.68 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_conversion_utils.py	4.86 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_cpu_features.py	6.63 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_datetime.py	105.66 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_defchararray.py	23.81 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_deprecations.py	23.62 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_dtype.py	48.14 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_einsum.py	44.14 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_errstate.py	2.02 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_extint128.py	5.51 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_function_base.py	12.84 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_getlimits.py	4.2 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_half.py	22.56 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_indexerrors.py	5.01 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_indexing.py	48.11 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_item_selection.py	3.5 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_longdouble.py	12.74 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_machar.py	1.04 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_mem_overlap.py	28.18 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_memmap.py	7.29 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_multiarray.py	312.3 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_nditer.py	109.67 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_numeric.py	121.21 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_numerictypes.py	20.36 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_overrides.py	14.09 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_print.py	6.58 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_protocols.py	1.14 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_records.py	19.23 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_regression.py	86.76 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_scalar_ctors.py	2.52 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_scalar_methods.py	3.97 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_scalarbuffer.py	3.97 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_scalarinherit.py	2.08 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_scalarmath.py	27.9 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_scalarprint.py	14.8 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_shape_base.py	24.1 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_ufunc.py	82.01 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_umath.py	118.6 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_umath_accuracy.py	2.97 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_umath_complex.py	22.6 KB	10/28/2024 05:59:24 AM	rw-r--r--
📄 test_unicode.py	12.26 KB	10/28/2024 05:59:24 AM	rw-r--r--

Editing: test_getlimits.py

""" Test functions for limits module.

"""
import numpy as np
from numpy.core import finfo, iinfo
from numpy import half, single, double, longdouble
from numpy.testing import assert_equal, assert_, assert_raises
from numpy.core.getlimits import _discovered_machar, _float_ma

##################################################

class TestPythonFloat:
    def test_singleton(self):
        ftype = finfo(float)
        ftype2 = finfo(float)
        assert_equal(id(ftype), id(ftype2))

class TestHalf:
    def test_singleton(self):
        ftype = finfo(half)
        ftype2 = finfo(half)
        assert_equal(id(ftype), id(ftype2))

class TestSingle:
    def test_singleton(self):
        ftype = finfo(single)
        ftype2 = finfo(single)
        assert_equal(id(ftype), id(ftype2))

class TestDouble:
    def test_singleton(self):
        ftype = finfo(double)
        ftype2 = finfo(double)
        assert_equal(id(ftype), id(ftype2))

class TestLongdouble:
    def test_singleton(self):
        ftype = finfo(longdouble)
        ftype2 = finfo(longdouble)
        assert_equal(id(ftype), id(ftype2))

class TestFinfo:
    def test_basic(self):
        dts = list(zip(['f2', 'f4', 'f8', 'c8', 'c16'],
                       [np.float16, np.float32, np.float64, np.complex64,
                        np.complex128]))
        for dt1, dt2 in dts:
            for attr in ('bits', 'eps', 'epsneg', 'iexp', 'machar', 'machep',
                         'max', 'maxexp', 'min', 'minexp', 'negep', 'nexp',
                         'nmant', 'precision', 'resolution', 'tiny'):
                assert_equal(getattr(finfo(dt1), attr),
                             getattr(finfo(dt2), attr), attr)
        assert_raises(ValueError, finfo, 'i4')

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

class TestRepr:
    def test_iinfo_repr(self):
        expected = "iinfo(min=-32768, max=32767, dtype=int16)"
        assert_equal(repr(np.iinfo(np.int16)), expected)

def test_finfo_repr(self):
        expected = "finfo(resolution=1e-06, min=-3.4028235e+38," + \
                   " max=3.4028235e+38, dtype=float32)"
        assert_equal(repr(np.finfo(np.float32)), expected)

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

def assert_ma_equal(discovered, ma_like):
    # Check MachAr-like objects same as calculated MachAr instances
    for key, value in discovered.__dict__.items():
        assert_equal(value, getattr(ma_like, key))
        if hasattr(value, 'shape'):
            assert_equal(value.shape, getattr(ma_like, key).shape)
            assert_equal(value.dtype, getattr(ma_like, key).dtype)

def test_known_types():
    # Test we are correctly compiling parameters for known types
    for ftype, ma_like in ((np.float16, _float_ma[16]),
                           (np.float32, _float_ma[32]),
                           (np.float64, _float_ma[64])):
        assert_ma_equal(_discovered_machar(ftype), ma_like)
    # Suppress warning for broken discovery of double double on PPC
    with np.errstate(all='ignore'):
        ld_ma = _discovered_machar(np.longdouble)
    bytes = np.dtype(np.longdouble).itemsize
    if (ld_ma.it, ld_ma.maxexp) == (63, 16384) and bytes in (12, 16):
        # 80-bit extended precision
        assert_ma_equal(ld_ma, _float_ma[80])
    elif (ld_ma.it, ld_ma.maxexp) == (112, 16384) and bytes == 16:
        # IEE 754 128-bit
        assert_ma_equal(ld_ma, _float_ma[128])

def test_plausible_finfo():
    # Assert that finfo returns reasonable results for all types
    for ftype in np.sctypes['float'] + np.sctypes['complex']:
        info = np.finfo(ftype)
        assert_(info.nmant > 1)
        assert_(info.minexp < -1)
        assert_(info.maxexp > 1)