def test_command():
a = App()
callback_event = Event()
def callback():
callback_event.set()
s = Slider(a, command = callback)
assert not callback_event.is_set()
# you cant invoke a tk scale - this is better than no tests!
s._command_callback(s.value)
assert callback_event.is_set()
a.destroy()
def test_command_with_parameter():
a = App()
callback_event = Event()
def callback(value):
assert value == 0
callback_event.set()
s = Slider(a, command = callback)
assert not callback_event.is_set()
s._command_callback(s.value)
assert callback_event.is_set()
a.destroy()
def test_update_command_with_parameter():
a = App()
callback_event = Event()
def callback(value):
assert s.value == 0
callback_event.set()
s = Slider(a)
s.update_command(callback)
s._command_callback(s.value)
assert callback_event.is_set()
a.destroy()
def test_update_command():
a = App()
callback_event = Event()
def callback():
callback_event.set()
s = Slider(a)
s._command_callback(s.value)
assert not callback_event.is_set()
s.update_command(callback)
s._command_callback(s.value)
assert callback_event.is_set()
callback_event.clear()
s.update_command(None)
s._command_callback(s.value)
assert not callback_event.is_set()
a.destroy()