def testRefCountIncRefDecRef(self):
frees = []
allocator = GetAllocatingTestAllocator([], frees)
mapper = PythonMapper(allocator)
deallocTypes = CreateTypes(mapper)
obj1 = object()
ptr = mapper.Store(obj1)
self.assertEquals(mapper.HasPtr(ptr), True)
mapper.IncRef(ptr)
self.assertEquals(mapper.RefCount(ptr), 2, "unexpected refcount")
self.assertEquals(mapper.HasPtr(ptr), True)
del frees[:]
mapper.DecRef(ptr)
self.assertEquals(mapper.RefCount(ptr), 1, "unexpected refcount")
self.assertEquals(mapper.HasPtr(ptr), True)
self.assertEquals(frees, [], "unexpected deallocations")
mapper.DecRef(ptr)
self.assertEquals(mapper.HasPtr(ptr), False)
self.assertEquals(frees, [ptr], "unexpected deallocations")
self.assertRaises(KeyError, lambda: mapper.PyObject_Free(ptr))
mapper.Dispose()
deallocTypes()
def testNullPointers(self):
allocator = GetDoNothingTestAllocator([])
mapper = PythonMapper(allocator)
self.assertEquals(mapper.HasPtr(IntPtr.Zero), False)
self.assertRaisesClr(CannotInterpretException, lambda: mapper.IncRef(IntPtr.Zero))
self.assertRaisesClr(CannotInterpretException, lambda: mapper.DecRef(IntPtr.Zero))
self.assertRaisesClr(CannotInterpretException, lambda: mapper.Retrieve(IntPtr.Zero))
self.assertRaisesClr(CannotInterpretException, lambda: mapper.RefCount(IntPtr.Zero))
mapper.Dispose()
def test_PyObject_New(self):
allocs = []
allocator = GetAllocatingTestAllocator(allocs, [])
mapper = PythonMapper(allocator)
deallocTypes = CreateTypes(mapper)
typeObjSize = Marshal.SizeOf(PyTypeObject())
typePtr = Marshal.AllocHGlobal(typeObjSize)
CPyMarshal.Zero(typePtr, typeObjSize)
CPyMarshal.WriteIntField(typePtr, PyTypeObject, "tp_basicsize", 31337)
del allocs[:]
objPtr = mapper._PyObject_New(typePtr)
self.assertEquals(allocs, [(objPtr, 31337)])
self.assertEquals(CPyMarshal.ReadPtrField(objPtr, PyObject, 'ob_type'), typePtr)
self.assertEquals(CPyMarshal.ReadIntField(objPtr, PyObject, 'ob_refcnt'), 1)
self.assertEquals(mapper.HasPtr(objPtr), False)
mapper.Dispose()
deallocTypes()
