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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 virtual_functions_ext import *
>>> class C1(concrete):
... def f(self, y):
... return concrete.f(self, Y(-y.value()))
>>> class C2(concrete):
... pass
>>> class A1(abstract):
... def f(self, y):
... return y.value() * 2
... def g(self, y):
... return self
>>> class A2(abstract):
... pass
>>> y1 = Y(16)
>>> y2 = Y(17)
#
# Test abstract with f,g overridden
#
>>> a1 = A1(42)
>>> a1.value()
42
# Call f,g indirectly from C++
>>> a1.call_f(y1)
32
>>> assert type(a1.call_g(y1)) is abstract
# Call f directly from Python
>>> a1.f(y2)
34
#
# Test abstract with f not overridden
#
>>> a2 = A2(42)
>>> a2.value()
42
# Call f indirectly from C++
>>> try: a2.call_f(y1)
... except AttributeError: pass
... else: print('no exception')
# Call f directly from Python
>>> try: a2.call_f(y2)
... except AttributeError: pass
... else: print('no exception')
############# Concrete Tests ############
#
# Test concrete with f overridden
#
>>> c1 = C1(42)
>>> c1.value()
42
# Call f indirectly from C++
>>> c1.call_f(y1)
-16
# Call f directly from Python
>>> c1.f(y2)
-17
#
# Test concrete with f not overridden
#
>>> c2 = C2(42)
>>> c2.value()
42
# Call f indirectly from C++
>>> c2.call_f(y1)
16
# Call f directly from Python
>>> c2.f(y2)
17
'''
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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