def test_update_command_with_parameter():
a = App()
callback_event = Event()
def callback(value):
assert c.value == "foo"
callback_event.set()
c = Combo(a, ["foo", "bar"])
c.update_command(callback)
c._command_callback(c.value)
assert callback_event.is_set()
a.destroy()
def test_update_command():
a = App()
callback_event = Event()
def callback():
callback_event.set()
c = Combo(a, ["foo", "bar"])
c._command_callback(c.value)
assert not callback_event.is_set()
c.update_command(callback)
c._command_callback(c.value)
assert callback_event.is_set()
callback_event.clear()
c.update_command(None)
c._command_callback(c.value)
assert not callback_event.is_set()
a.destroy()