# Test CardStackButtonIds
btn = CardStackButtonIds(prefix="cs0")
assert btn.nav_up == "cs0-btn-nav-up"
assert btn.nav_down == "cs0-btn-nav-down"
assert btn.nav_first == "cs0-btn-nav-first"
assert btn.nav_last == "cs0-btn-nav-last"
assert btn.nav_page_up == "cs0-btn-nav-page-up"
assert btn.nav_page_down == "cs0-btn-nav-page-down"
assert btn.width_narrow == "cs0-btn-width-narrow"
assert btn.width_widen == "cs0-btn-width-widen"
assert btn.scale_decrease == "cs0-btn-scale-decrease"
assert btn.scale_increase == "cs0-btn-scale-increase"
print("CardStackButtonIds tests passed!")CardStackButtonIds tests passed!