1from numpy.testing import assert_
2
3import numbers
4
5import numpy as np
6from numpy.core.numerictypes import sctypes
7
8class TestABC:
9    def test_abstract(self):
10        assert_(issubclass(np.number, numbers.Number))
11
12        assert_(issubclass(np.inexact, numbers.Complex))
13        assert_(issubclass(np.complexfloating, numbers.Complex))
14        assert_(issubclass(np.floating, numbers.Real))
15
16        assert_(issubclass(np.integer, numbers.Integral))
17        assert_(issubclass(np.signedinteger, numbers.Integral))
18        assert_(issubclass(np.unsignedinteger, numbers.Integral))
19
20    def test_floats(self):
21        for t in sctypes['float']:
22            assert_(isinstance(t(), numbers.Real),
23                    "{0} is not instance of Real".format(t.__name__))
24            assert_(issubclass(t, numbers.Real),
25                    "{0} is not subclass of Real".format(t.__name__))
26            assert_(not isinstance(t(), numbers.Rational),
27                    "{0} is instance of Rational".format(t.__name__))
28            assert_(not issubclass(t, numbers.Rational),
29                    "{0} is subclass of Rational".format(t.__name__))
30
31    def test_complex(self):
32        for t in sctypes['complex']:
33            assert_(isinstance(t(), numbers.Complex),
34                    "{0} is not instance of Complex".format(t.__name__))
35            assert_(issubclass(t, numbers.Complex),
36                    "{0} is not subclass of Complex".format(t.__name__))
37            assert_(not isinstance(t(), numbers.Real),
38                    "{0} is instance of Real".format(t.__name__))
39            assert_(not issubclass(t, numbers.Real),
40                    "{0} is subclass of Real".format(t.__name__))
41
42    def test_int(self):
43        for t in sctypes['int']:
44            assert_(isinstance(t(), numbers.Integral),
45                    "{0} is not instance of Integral".format(t.__name__))
46            assert_(issubclass(t, numbers.Integral),
47                    "{0} is not subclass of Integral".format(t.__name__))
48
49    def test_uint(self):
50        for t in sctypes['uint']:
51            assert_(isinstance(t(), numbers.Integral),
52                    "{0} is not instance of Integral".format(t.__name__))
53            assert_(issubclass(t, numbers.Integral),
54                    "{0} is not subclass of Integral".format(t.__name__))
55