Files
iris/tests/scroll.rs
T
iris 7eb2b85425 One proxy, and a macro instead of a shared test module
`Proxy` is the task queue as well as the way an application sends its own
events, so `ProxyQueue` is gone. `schedule_redraw` becomes
`request_redraw_if_needed`, which says what the comment beside it was
saying.

`assert_corners!` replaces the region helper, so `tests/common` goes with
it, and the scroll test now states both corners rather than one number.
2026-09-13 21:29:38 -04:00

27 lines
818 B
Rust

//! Scrolling moves content and stops at its ends.
use iris::harness::{Harness, assert_corners};
use iris::prelude::*;
#[test]
fn a_wheel_scrolls_the_content_and_stops_at_its_end() {
let mut h = Harness::new((400, 200));
// Twice the window's height, so there is 200 to scroll.
let top = rect(Color::RED).height(200).add(&mut h.rsc);
let bottom = rect(Color::BLUE).height(200).add(&mut h.rsc);
h.set_root((top, bottom).span(Dir::DOWN).scrollable());
h.move_to((200, 100));
// `Scroll` starts snapped to the end.
assert_corners!(h, top, (0, -200), (400, 0));
// The handler scales a wheel line by 50.
h.scroll((0, 1));
h.frame();
assert_corners!(h, top, (0, -150), (400, 50));
h.scroll((0, 10));
h.frame();
assert_corners!(h, top, (0, 0), (400, 200));
}