libs/python/test/object.py

# Copyright David Abrahams 2004. Distributed under the Boost
# Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
'''
>>> from object_ext import *

>>> type(ref_to_noncopyable())
<class 'object_ext.NotCopyable'>

>>> def print1(x):
...     print(x)
>>> call_object_3(print1)
3
>>> message()
'hello, world!'
>>> number()
42

>>> test('hi')
1
>>> test(None)
0
>>> test_not('hi')
0
>>> test_not(0)
1

        Attributes

>>> class X: pass
...
>>> x = X()

>>> try: obj_getattr(x, 'foo')
... except AttributeError: pass
... else: print('expected an exception')
>>> try: obj_objgetattr(x, 'objfoo')
... except AttributeError: pass
... else: print('expected an exception')

>>> obj_setattr(x, 'foo', 1)
>>> x.foo
1
>>> obj_objsetattr(x, 'objfoo', 1)
>>> try:obj_objsetattr(x, 1)
... except TypeError: pass
... else: print('expected an exception')
>>> x.objfoo
1
>>> obj_getattr(x, 'foo')
1
>>> obj_objgetattr(x, 'objfoo')
1
>>> try:obj_objgetattr(x, 1)
... except TypeError: pass
... else: print('expected an exception')
>>> obj_const_getattr(x, 'foo')
1
>>> obj_const_objgetattr(x, 'objfoo')
1
>>> obj_setattr42(x, 'foo')
>>> x.foo
42
>>> obj_objsetattr42(x, 'objfoo')
>>> x.objfoo
42
>>> obj_moveattr(x, 'foo', 'bar')
>>> x.bar
42
>>> obj_objmoveattr(x, 'objfoo', 'objbar')
>>> x.objbar
42
>>> test_attr(x, 'foo')
1
>>> test_objattr(x, 'objfoo')
1
>>> test_not_attr(x, 'foo')
0
>>> test_not_objattr(x, 'objfoo')
0
>>> x.foo = None
>>> test_attr(x, 'foo')
0
>>> x.objfoo = None
>>> test_objattr(x, 'objfoo')
0
>>> test_not_attr(x, 'foo')
1
>>> test_not_objattr(x, 'objfoo')
1
>>> obj_delattr(x, 'foo')
>>> obj_objdelattr(x, 'objfoo')
>>> try:obj_delattr(x, 'foo')
... except AttributeError: pass
... else: print('expected an exception')
>>> try:obj_objdelattr(x, 'objfoo')
... except AttributeError: pass
... else: print('expected an exception')

        Items

>>> d = {}
>>> obj_setitem(d, 'foo', 1)
>>> d['foo']
1
>>> obj_getitem(d, 'foo')
1
>>> obj_const_getitem(d, 'foo')
1
>>> obj_setitem42(d, 'foo')
>>> obj_getitem(d, 'foo')
42
>>> d['foo']
42
>>> obj_moveitem(d, 'foo', 'bar')
>>> d['bar']
42
>>> obj_moveitem2(d, 'bar', d, 'baz')
>>> d['baz']
42
>>> test_item(d, 'foo')
1
>>> test_not_item(d, 'foo')
0
>>> d['foo'] = None
>>> test_item(d, 'foo')
0
>>> test_not_item(d, 'foo')
1

        Slices

>>> assert check_string_slice()

        Operators

>>> def print_args(*args, **kwds):
...     print(args, kwds)
>>> test_call(print_args, (0, 1, 2, 3), {'a':'A'})
(0, 1, 2, 3) {'a': 'A'}


>>> assert check_binary_operators()

>>> class X: pass
...
>>> assert check_inplace(list(range(3)), X())


       Now make sure that object is actually managing reference counts

>>> import weakref
>>> class Z: pass
...
>>> z = Z()
>>> def death(r): print('death')
...
>>> r = weakref.ref(z, death)
>>> z.foo = 1
>>> obj_getattr(z, 'foo')
1
>>> del z
death
'''

from __future__ import print_function

def run(args = None):
    import sys
    import doctest

    if args is not None:
        sys.argv = args
    return doctest.testmod(sys.modules.get(__name__))

if __name__ == '__main__':
    print("running...")
    import sys
    status = run()[0]
    if (status == 0): print("Done.")
    sys.exit(status)
Boost C++ Libraries

libs/python/test/object.py
