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# 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 test_pointer_adoption_ext import *
>>> num_a_instances()
0
>>> a = create('dynamically allocated')
>>> num_a_instances()
1
>>> a.content()
'dynamically allocated'
>>> innards = a.get_inner()
>>> innards.change('with an exposed reference')
>>> a.content()
'with an exposed reference'
# The a instance should be kept alive...
>>> a = None
>>> num_a_instances()
1
# ...until we're done with its innards
>>> innards = None
>>> num_a_instances()
0
>>> b = B()
>>> a = create('another')
>>> b.a_content()
'empty'
>>> innards = b.adopt(a);
>>> b.a_content()
'another'
>>> num_a_instances()
1
>>> del a # innards and b are both holding a reference
>>> num_a_instances()
1
>>> innards.change('yet another')
>>> b.a_content()
'yet another'
>>> del innards
>>> num_a_instances() # b still owns a reference to a
1
>>> del b
>>> num_a_instances()
0
Test call policies for constructors here
>>> a = create('second a')
>>> num_a_instances()
1
>>> b = B(a)
>>> num_a_instances()
1
>>> a.content()
'second a'
>>> del a
>>> num_a_instances()
1
>>> b.a_content()
'second a'
>>> del b
>>> num_a_instances()
0
>>> assert as_A(create('dynalloc')) is not None
>>> base = Base()
>>> assert as_A(base) is None
"""
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)
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