def test_varray_smart_pointer_in_cpp(self):
"""...Test C++ reference counter
"""
vcc = test.VarrayContainer()
self.assertEqual(vcc.nRef(), 0)
vcc.initVarray()
self.assertEqual(vcc.nRef(), 1)
cu1 = test.VarrayUser()
cu1.setArray(vcc)
self.assertEqual(vcc.nRef(), 2)
cu1.setArray(vcc)
self.assertEqual(vcc.nRef(), 2)
cu2 = test.VarrayUser()
cu2.setArray(vcc)
self.assertEqual(vcc.nRef(), 3)
del cu1
self.assertEqual(vcc.nRef(), 2)
cu3 = test.VarrayUser()
cu3.setArray(vcc)
self.assertEqual(vcc.nRef(), 3)
del cu3, cu2
self.assertEqual(vcc.nRef(), 1)
# we cannot check it will go to 0 after vcc deletion in Python
cu4 = test.VarrayUser()
cu4.setArray(vcc)
self.assertEqual(vcc.nRef(), 2)
del vcc
self.assertEqual(cu4.nRef(), 1)
# we cannot check it will go to 0 after cu4 deletion in Python
del cu4
def test_varray_smart_pointer_deletion2(self):
"""...Test that base is deleted after a double assignment in Python
"""
vcc = test.VarrayContainer()
vcc.initVarray()
a = vcc.varrayPtr
b = vcc.varrayPtr
r = weakref.ref(b)
del a, vcc, b
self.assertIsNone(r())
def test_varray_share_same_support(self):
"""...Test that modifications on Varray of in Python affect the same
support
"""
vcc = test.VarrayContainer()
vcc.initVarray()
# Now mix with some Python
a = vcc.varrayPtr
a[0] = 99.0
self.assertEqual(vcc.varrayPtr[0], 99.0)
vcc.varrayPtr[1] = 999.0
self.assertEqual(a[1], 999.0)
def test_varray_smart_pointer_deletion1(self):
"""...Test that varray is still alive after deletion in Python
"""
vcc = test.VarrayContainer()
vcc.initVarray()
# Now mix with some Python
a = vcc.varrayPtr
# This does not increment C++ reference counter
self.assertEqual(vcc.nRef(), 1)
# Get a weak ref of the array
r = weakref.ref(a)
del a
np.testing.assert_array_almost_equal(r(), vcc.varrayPtr)
del vcc
self.assertIsNone(r())
def test_varray_smart_pointer_deletion3(self):
"""...Test that base is deleted after a double assignment in Python
"""
vcc = test.VarrayContainer()
vcc.initVarray()
# Now mix with some Python
a = vcc.varrayPtr
a_sum = np.sum(a)
# This does not increment C++ reference counter
self.assertEqual(vcc.nRef(), 1)
# Get a weak ref of the array
r = weakref.ref(vcc.varrayPtr)
del vcc
np.testing.assert_array_almost_equal(a_sum, np.sum(a))
self.assertIsNone(r())
del a