def test_modifierbuttons_assign():
# Tests assignment operator.
btns1 = ModifierButtons()
btns1.add_button("space")
btns2 = ModifierButtons()
btns2.assign(btns1)
assert btns1 == btns2
assert tuple(btns1.buttons) == tuple(btns2.buttons)
def test_modifierbuttons_cow():
# Tests the copy-on-write mechanism of the button list.
btns1 = ModifierButtons()
btns1.add_button("space")
# Modifying original should not affect copy
btns2 = ModifierButtons(btns1)
assert tuple(btns2.buttons) == tuple(btns1.buttons)
btns1.add_button("enter")
assert tuple(btns1.buttons) == ("space", "enter")
assert tuple(btns2.buttons) == ("space", )
# Modifying copy should not affect original
btns3 = ModifierButtons(btns2)
assert tuple(btns3.buttons) == tuple(btns2.buttons)
btns3.add_button("escape")
assert tuple(btns2.buttons) == ("space", )
assert tuple(btns3.buttons) == ("space", "escape")
def test_modifierbuttons_state():
btns = ModifierButtons()
btns.add_button("alt")
btns.add_button("shift")
btns.add_button("control")
assert not btns.is_any_down()
# Not tracked
btns.button_down("enter")
assert not btns.is_any_down()
# Tracked
btns.button_down("shift")
assert btns.is_any_down()
assert not btns.is_down(0)
assert btns.is_down(1)
assert not btns.is_down(2)
btns.button_up("shift")
assert not btns.is_any_down()
assert not btns.is_down(0)
assert not btns.is_down(1)
assert not btns.is_down(2)
btns.button_down("alt")
btns.button_down("shift")
assert btns.is_any_down()
assert btns.is_down(0)
assert btns.is_down(1)
assert not btns.is_down(2)
btns.all_buttons_up()
assert not btns.is_any_down()
assert not btns.is_down(0)
assert not btns.is_down(1)
assert not btns.is_down(2)