def dbval2val(converter, dbval, obj=None):
if isinstance(dbval, (int, bool, float, type(None))):
return dbval
val = json.loads(dbval)
if obj is None:
return val
return TrackedValue.make(obj, converter.attr, val)
def validate(converter, val, obj=None):
if obj is None or converter.attr is None:
return val
if isinstance(val, TrackedValue
) and val.obj is obj and val.attr is converter.attr:
return val
return TrackedValue.make(obj, converter.attr, val)
def test_make(self):
obj = Object()
attr = Attr()
value = {'items': ['one', 'two', 'three']}
tracked_value = TrackedValue.make(obj, attr, value)
self.assertEqual(type(tracked_value), TrackedDict)
self.assertEqual(type(tracked_value['items']), TrackedList)
def test_list_append(self):
obj = Object()
attr = Attr()
value = {'items': ['one', 'two', 'three']}
tracked_value = TrackedValue.make(obj, attr, value)
log = []
obj.on_attr_changed = lambda x: log.append(x)
tracked_value['items'].append('four')
self.assertEqual(log, [attr])
def test_list_setslice(self):
obj = Object()
attr = Attr()
value = {'items': ['one', 'two', 'three']}
tracked_value = TrackedValue.make(obj, attr, value)
log = []
obj.on_attr_changed = lambda x: log.append(x)
tracked_value['items'][1:2] = ['a', 'b', 'c']
self.assertEqual(log, [attr])
self.assertEqual(tracked_value['items'],
['one', 'a', 'b', 'c', 'three'])