Unsetting a scroll method should only work, if the scroll method is currently active. For example when scroll-two-finger is active (i.e. scroll-edge, scroll-on-button-down is not active):
- unsetting scroll-two-finger should deactivate it and activate no-scroll
- but unsetting for example scroll-edge should not deactivate scroll-two-finger and not activate no-scroll
Reworked setting scroll method auto test in order to test it.
Regarding acceleration profiles: Unsetting one, should always switch to the other possible one as long as both are supported. In this case LIBINPUT_CONFIG_ACCEL_PROFILE_NONE is not a valid option in contrast to the definition of the scroll method enums.