def test_def_callback(self):
xs = []
b = Button()
@b.def_callback
def _():
xs.append(1)
b.handle_event(Click(target_id=b.id))
self.assertEqual([1], xs)
def test_set_callback(self):
xs = []
b = Button(callback=(lambda: xs.append(1)))
b.handle_event({'type': CLICK, 'id': b.id})
self.assertEqual([1], xs)
xs = []
b.set_callback(lambda: xs.append(2))
b.handle_event({'type': CLICK, 'id': b.id})
self.assertEqual([2], xs)
def test_callback_is_settable(self):
xs = []
b = Button(callback=(lambda: xs.append(1)))
b.handle_event(Click(target_id=b.id))
self.assertEqual([1], xs)
xs = []
b.callback = (lambda: xs.append(2))
b.handle_event(Click(target_id=b.id))
self.assertEqual([2], xs)
xs = []
b.callback = None
b.handle_event(Click(target_id=b.id))
self.assertEqual([], xs)