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# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (https://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with this program. If not, see <https://www.gnu.org/licenses/>. 

# 

 

import gc 

import unittest 

 

import lsst.utils.tests 

import _inheritance 

 

 

class PySharedPtrTestSuite(lsst.utils.tests.TestCase): 

"""Test the ability of PySharedPtr to safely pass hybrid objects 

between C++ and Python.""" 

 

class PyDerived(_inheritance.CppBase): 

def __init__(self): 

super().__init__() 

 

# Don't override overridable() 

 

def abstract(self): 

return "py-abstract" 

 

class PyCppDerived(_inheritance.CppDerived): 

def __init__(self): 

super().__init__() 

 

def nonOverridable(self): 

return "error -- should never be called!" 

 

def overridable(self): 

return "py-override" 

 

def abstract(self): 

return "py-abstract" 

 

def checkGarbageCollection(self, concreteClass, returns): 

"""Generic test for whether a C++/Python class survives garbage collection. 

 

Parameters 

---------- 

concreteClass : `_inheritance.CppBase`-type 

The class to test. Must be default-constructible. 

returns : `tuple` 

A tuple of the return values from ``concreteClass``'s 

``nonOverridable``, ``overridable``, and ``abstract`` methods, in 

that order. 

""" 

storage = _inheritance.CppStorage(concreteClass()) 

 

gc.collect() 

 

retrieved = _inheritance.getFromStorage(storage) 

self.assertIsInstance(retrieved, _inheritance.CppBase) 

self.assertIsInstance(retrieved, concreteClass) 

self.assertEqual(_inheritance.printFromCpp(retrieved), " ".join(returns)) 

 

def testPyDerivedGarbageCollection(self): 

self.checkGarbageCollection(self.PyDerived, ("42", "", "py-abstract")) 

 

def testCppDerivedGarbageCollection(self): 

self.checkGarbageCollection(_inheritance.CppDerived, ("42", "overridden", "implemented")) 

 

def testPyCppDerivedGarbageCollection(self): 

self.checkGarbageCollection(self.PyCppDerived, ("42", "py-override", "py-abstract")) 

 

 

class TestMemory(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

94 ↛ 95line 94 didn't jump to line 95, because the condition on line 94 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()