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#!/usr/bin/env python
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
'''Simple test case for accessing the exposed C++ class fields.'''
import os
import sys
import unittest
from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from shiboken_paths import init_paths
init_paths()
from sample import Derived, Point, ObjectType
class TestAccessingCppFields(unittest.TestCase):
'''Simple test case for accessing the exposed C++ class fields.'''
def testAccessingPrimitiveTypeField(self):
'''Reads and writes a primitive type (in this case an 'int') field.'''
d = Derived()
self.assertEqual(type(d.primitiveField), int)
# attribution
old_value = d.primitiveField
new_value = 2255
d.primitiveField = new_value
self.assertEqual(d.primitiveField, new_value)
self.assertNotEqual(d.primitiveField, old_value)
# attribution with a convertible type
value = 1.2
d.primitiveField = value
self.assertEqual(d.primitiveField, int(value))
# attribution with invalid type
self.assertRaises(TypeError, lambda: setattr(d, 'primitiveField', None))
def testAccessingRenamedFields(self):
'''Reads and writes a renamed field.'''
d = Derived()
self.assertEqual(type(d.renamedField), int)
old_value = d.renamedField
new_value = 2255
d.renamedField = new_value
self.assertEqual(d.renamedField, new_value)
self.assertNotEqual(d.renamedField, old_value)
def testAccessingReadOnlyFields(self):
'''Tests a read-only field.'''
d = Derived()
self.assertEqual(type(d.readOnlyField), int)
old_value = d.readOnlyField
try:
d.readOnlyField = 25555
except AttributeError:
pass
self.assertEqual(d.readOnlyField, old_value)
def testAccessingUsersPrimitiveTypeField(self):
'''Reads and writes an user's primitive type (in this case an 'Complex') field.'''
d = Derived()
self.assertEqual(type(d.userPrimitiveField), complex)
# attribution
old_value = d.userPrimitiveField
new_value = complex(1.1, 2.2)
d.userPrimitiveField = new_value
self.assertEqual(d.userPrimitiveField, new_value)
self.assertNotEqual(d.userPrimitiveField, old_value)
# attribution with invalid type
self.assertRaises(TypeError, lambda: setattr(d, 'userPrimitiveField', None))
def testAccessingValueTypeField(self):
'''Reads and writes a value type (in this case a 'Point') field.'''
d = Derived()
self.assertEqual(type(d.valueTypeField), Point)
# attribution
old_value = d.valueTypeField # noqa: F841
new_value = Point(-10, 537)
d.valueTypeField = new_value
self.assertEqual(d.valueTypeField, new_value)
#object modify
d.valueTypeField.setX(10)
d.valueTypeField.setY(20)
self.assertEqual(d.valueTypeField.x(), 10)
self.assertEqual(d.valueTypeField.y(), 20)
# attribution with invalid type
self.assertRaises(TypeError, lambda: setattr(d, 'valueTypeField', 123))
def testAccessingObjectTypeField(self):
'''Reads and writes a object type (in this case an 'ObjectType') field.'''
d = Derived()
# attribution
old_value = d.objectTypeField
new_value = ObjectType()
d.objectTypeField = new_value
self.assertEqual(d.objectTypeField, new_value)
self.assertNotEqual(d.objectTypeField, old_value)
# attribution with a convertible type
value = None
d.objectTypeField = value
self.assertEqual(d.objectTypeField, value)
# attribution with invalid type
self.assertRaises(TypeError, lambda: setattr(d, 'objectTypeField', 123))
@unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
def testRefCountingAccessingObjectTypeField(self):
'''Accessing a object type field should respect the reference counting rules.'''
d = Derived()
# attributing object to instance's field should increase its reference count
o1 = ObjectType()
refcount1 = sys.getrefcount(o1)
d.objectTypeField = o1
self.assertEqual(d.objectTypeField, o1)
self.assertEqual(sys.getrefcount(d.objectTypeField), refcount1 + 1)
# attributing a new object to instance's field should decrease the previous
# object's reference count
o2 = ObjectType()
refcount2 = sys.getrefcount(o2)
d.objectTypeField = o2
self.assertEqual(d.objectTypeField, o2)
self.assertEqual(sys.getrefcount(o1), refcount1)
self.assertEqual(sys.getrefcount(d.objectTypeField), refcount2 + 1)
@unittest.skipUnless(hasattr(sys, "getrefcount"), f"{sys.implementation.name} has no refcount")
def testRefCountingOfReferredObjectAfterDeletingReferrer(self):
'''Deleting the object referring to other object should decrease the
reference count of the referee.'''
d = Derived()
o = ObjectType()
refcount = sys.getrefcount(o)
d.objectTypeField = o
self.assertEqual(sys.getrefcount(o), refcount + 1)
del d
self.assertEqual(sys.getrefcount(o), refcount)
def testStaticField(self):
self.assertEqual(Derived.staticPrimitiveField, 0)
def testAccessingUnsignedIntBitField(self):
d = Derived()
# attribution
old_value = d.bitField
new_value = 1
d.bitField = new_value
self.assertEqual(d.bitField, new_value)
self.assertNotEqual(d.bitField, old_value)
# attribution with a convertible type
value = 1.2
d.bitField = value
self.assertEqual(d.bitField, int(value))
# attribution with invalid type
self.assertRaises(TypeError, lambda: setattr(d, 'bitField', None))
if __name__ == '__main__':
unittest.main()
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