Viewing file:  test_scalarinherit.py (2.33 KB) -rw-r--r--
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""" Test printing of scalar types.
"""
import pytest
import numpy as np
from numpy.testing import assert_, assert_raises
class A:
pass
class B(A, np.float64):
pass
class C(B):
pass
class D(C, B):
pass
class B0(np.float64, A):
pass
class C0(B0):
pass
class HasNew:
def __new__(cls, *args, **kwargs):
return cls, args, kwargs
class B1(np.float64, HasNew):
pass
class TestInherit:
def test_init(self):
x = B(1.0)
assert_(str(x) == '1.0')
y = C(2.0)
assert_(str(y) == '2.0')
z = D(3.0)
assert_(str(z) == '3.0')
def test_init2(self):
x = B0(1.0)
assert_(str(x) == '1.0')
y = C0(2.0)
assert_(str(y) == '2.0')
def test_gh_15395(self):
# HasNew is the second base, so `np.float64` should have priority
x = B1(1.0)
assert_(str(x) == '1.0')
# previously caused RecursionError!?
with pytest.raises(TypeError):
B1(1.0, 2.0)
class TestCharacter:
def test_char_radd(self):
# GH issue 9620, reached gentype_add and raise TypeError
np_s = np.string_('abc')
np_u = np.unicode_('abc')
s = b'def'
u = u'def'
assert_(np_s.__radd__(np_s) is NotImplemented)
assert_(np_s.__radd__(np_u) is NotImplemented)
assert_(np_s.__radd__(s) is NotImplemented)
assert_(np_s.__radd__(u) is NotImplemented)
assert_(np_u.__radd__(np_s) is NotImplemented)
assert_(np_u.__radd__(np_u) is NotImplemented)
assert_(np_u.__radd__(s) is NotImplemented)
assert_(np_u.__radd__(u) is NotImplemented)
assert_(s + np_s == b'defabc')
assert_(u + np_u == u'defabc')
class MyStr(str, np.generic):
# would segfault
pass
with assert_raises(TypeError):
# Previously worked, but gave completely wrong result
ret = s + MyStr('abc')
class MyBytes(bytes, np.generic):
# would segfault
pass
ret = s + MyBytes(b'abc')
assert(type(ret) is type(s))
assert ret == b"defabc"
def test_char_repeat(self):
np_s = np.string_('abc')
np_u = np.unicode_('abc')
res_s = b'abc' * 5
res_u = u'abc' * 5
assert_(np_s * 5 == res_s)
assert_(np_u * 5 == res_u)
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