def test_garbage_collection_3(self):
test = NotifyTestObject()
variable = Variable()
condition1 = variable.is_true()
condition2 = ~condition1
condition2.store(test.simple_handler)
condition1 = weakref.ref(condition1)
condition2 = weakref.ref(condition2)
self.collect_garbage()
self.assertNotEqual(condition1(), None)
self.assertNotEqual(condition2(), None)
self.collect_garbage()
variable.value = 10
condition2().changed.disconnect(test.simple_handler)
self.collect_garbage()
self.assertEqual(condition1(), None)
self.assertEqual(condition2(), None)
variable = weakref.ref(variable)
self.collect_garbage()
self.assertEqual(variable(), None)
test.assert_results(True, False)
def test_garbage_collection_3 (self):
test = NotifyTestObject ()
variable = Variable ()
condition1 = variable.is_true ()
condition2 = ~condition1
condition2.store (test.simple_handler)
condition1 = weakref.ref (condition1)
condition2 = weakref.ref (condition2)
self.collect_garbage ()
self.assertNotEqual (condition1 (), None)
self.assertNotEqual (condition2 (), None)
self.collect_garbage ()
variable.value = 10
condition2 ().changed.disconnect (test.simple_handler)
self.collect_garbage ()
self.assertEqual (condition1 (), None)
self.assertEqual (condition2 (), None)
variable = weakref.ref (variable)
self.collect_garbage ()
self.assertEqual (variable (), None)
test.assert_results (True, False)
def test_is_true (self):
variable = Variable (0)
is_true = variable.is_true ()
self.assert_(not is_true)
variable.value = 'string'
self.assert_(is_true)
variable.value = []
self.assert_(not is_true)
variable.value = None
self.assert_(not is_true)
variable.value = 25
self.assert_(is_true)
def test_garbage_collection_1(self):
test = NotifyTestObject()
variable = Variable()
condition = variable.is_true()
condition.store(test.simple_handler)
condition = weakref.ref(condition)
# This must not collect the `is_true' condition, even though it is not directly
# referenced at all.
self.collect_garbage()
self.assertNotEqual(condition(), None)
self.collect_garbage()
variable.value = 10
# This makes condition `unused' and it must become available to garbage collector
# again.
del variable
self.collect_garbage()
self.assertEqual(condition(), None)
test.assert_results(False, True)
def test_garbage_collection_1 (self):
test = NotifyTestObject ()
variable = Variable ()
condition = variable.is_true ()
condition.store (test.simple_handler)
condition = weakref.ref (condition)
# This must not collect the `is_true' condition, even though it is not directly
# referenced at all.
self.collect_garbage ()
self.assertNotEqual (condition (), None)
self.collect_garbage ()
variable.value = 10
# This makes condition `unused' and it must become available to garbage collector
# again.
del variable
self.collect_garbage ()
self.assertEqual (condition (), None)
test.assert_results (False, True)
