diff options
Diffstat (limited to 'numpy')
| -rw-r--r-- | numpy/core/tests/test_getlimits.py | 60 |
1 files changed, 49 insertions, 11 deletions
diff --git a/numpy/core/tests/test_getlimits.py b/numpy/core/tests/test_getlimits.py index b8aaba386..63217c38c 100644 --- a/numpy/core/tests/test_getlimits.py +++ b/numpy/core/tests/test_getlimits.py @@ -3,6 +3,7 @@ """ import warnings import numpy as np +import pytest from numpy.core import finfo, iinfo from numpy import half, single, double, longdouble from numpy.testing import assert_equal, assert_, assert_raises @@ -40,20 +41,38 @@ class TestLongdouble: ftype2 = finfo(longdouble) assert_equal(id(ftype), id(ftype2)) +def assert_finfo_equal(f1, f2): + # assert two finfo instances have the same attributes + for attr in ('bits', 'eps', 'epsneg', 'iexp', 'machep', + 'max', 'maxexp', 'min', 'minexp', 'negep', 'nexp', + 'nmant', 'precision', 'resolution', 'tiny', + 'smallest_normal', 'smallest_subnormal'): + assert_equal(getattr(f1, attr), getattr(f2, attr), + f'finfo instances {f1} and {f2} differ on {attr}') + +def assert_iinfo_equal(i1, i2): + # assert two iinfo instances have the same attributes + for attr in ('bits', 'min', 'max'): + assert_equal(getattr(i1, attr), getattr(i2, attr), + f'iinfo instances {i1} and {i2} differ on {attr}') + 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', 'machep', - 'max', 'maxexp', 'min', 'minexp', 'negep', 'nexp', - 'nmant', 'precision', 'resolution', 'tiny', - 'smallest_normal', 'smallest_subnormal'): - assert_equal(getattr(finfo(dt1), attr), - getattr(finfo(dt2), attr), attr) + assert_finfo_equal(finfo(dt1), finfo(dt2)) + assert_raises(ValueError, finfo, 'i4') + def test_regression_gh23108(self): + # np.float32(1.0) and np.float64(1.0) have the same hash and are + # equal under the == operator + f1 = np.finfo(np.float32(1.0)) + f2 = np.finfo(np.float64(1.0)) + assert f1 != f2 + class TestIinfo: def test_basic(self): dts = list(zip(['i1', 'i2', 'i4', 'i8', @@ -61,9 +80,8 @@ class TestIinfo: [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_iinfo_equal(iinfo(dt1), iinfo(dt2)) + assert_raises(ValueError, iinfo, 'f4') def test_unsigned_max(self): @@ -85,8 +103,28 @@ class TestRepr: def test_instances(): - iinfo(10) - finfo(3.0) + # Test the finfo and iinfo results on numeric instances agree with + # the results on the corresponding types + + for c in [int, np.int16, np.int32, np.int64]: + class_iinfo = iinfo(c) + instance_iinfo = iinfo(c(12)) + + assert_iinfo_equal(class_iinfo, instance_iinfo) + + for c in [float, np.float16, np.float32, np.float64]: + class_finfo = finfo(c) + instance_finfo = finfo(c(1.2)) + assert_finfo_equal(class_finfo, instance_finfo) + + with pytest.raises(ValueError): + iinfo(10.) + + with pytest.raises(ValueError): + iinfo('hi') + + with pytest.raises(ValueError): + finfo(np.int64(1)) def assert_ma_equal(discovered, ma_like): |