141 lines
4.5 KiB
Rust
141 lines
4.5 KiB
Rust
use std::{cell::RefCell, rc::Rc};
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use gpui::{
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Context, IntoElement, Modifiers, MouseButton, ParentElement as _, Render, Styled as _,
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TestAppContext, VisualTestContext, Window, WindowHandle, div, point, px,
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};
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use gpui_native_data::list::{List, ListItem};
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use gpui_native_theme::Theme;
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struct Harness {
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selected: Option<usize>,
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changes: Rc<RefCell<Vec<Option<usize>>>>,
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}
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impl Render for Harness {
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fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
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let changes = self.changes.clone();
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let view = cx.entity();
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div().size_full().child(
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List::new("test-list")
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.selected(self.selected)
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.on_change(move |next, _, cx| {
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changes.borrow_mut().push(next);
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view.update(cx, |harness, cx| {
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harness.selected = next;
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cx.notify();
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});
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})
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.items(|_, _| {
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vec![
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ListItem::new("One"),
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ListItem::new("Two"),
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ListItem::new("Unavailable").disabled(true),
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ListItem::new("Three"),
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]
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}),
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)
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}
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}
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type Changes = Rc<RefCell<Vec<Option<usize>>>>;
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type ListWindow = (
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TestAppContext,
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VisualTestContext,
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WindowHandle<Harness>,
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Changes,
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);
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/// Rows paint at the top-left with no outer padding: one row per ~34 px band
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/// (16 px text line + 2×4 px padding + 2 px gap), so clicks at `(50, 16/48/80/112)`
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/// land on One / Two / the disabled Unavailable / Three.
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fn list_window(selected: Option<usize>) -> ListWindow {
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let mut cx = TestAppContext::single();
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cx.update(Theme::init);
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let changes = Rc::new(RefCell::new(Vec::new()));
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let harness_changes = changes.clone();
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let window = cx.add_window(move |_, _| Harness {
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selected,
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changes: harness_changes,
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});
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let mut visual = VisualTestContext::from_window(window.into(), &cx);
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visual.update(|window, cx| {
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window.draw(cx).clear(cx);
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});
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(cx, visual, window, changes)
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}
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fn draw(visual: &mut VisualTestContext) {
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visual.update(|window, cx| {
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window.draw(cx).clear(cx);
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});
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}
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fn click(visual: &mut VisualTestContext, position: gpui::Point<gpui::Pixels>) {
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visual.simulate_mouse_down(position, MouseButton::Left, Modifiers::default());
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visual.simulate_mouse_up(position, MouseButton::Left, Modifiers::default());
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}
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#[test]
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fn clicking_a_row_selects_it_and_hands_the_list_the_keyboard() {
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let (_cx, mut visual, _window, changes) = list_window(None);
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click(&mut visual, point(px(50.), px(16.)));
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assert_eq!(*changes.borrow(), vec![Some(0)]);
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// The click focused the list, so the arrows navigate from here.
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visual.simulate_keystrokes("down");
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draw(&mut visual);
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assert_eq!(*changes.borrow(), vec![Some(0), Some(1)]);
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}
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#[test]
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fn clicking_a_disabled_row_reports_nothing() {
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let (_cx, mut visual, _window, changes) = list_window(None);
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click(&mut visual, point(px(50.), px(80.)));
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draw(&mut visual);
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assert_eq!(*changes.borrow(), Vec::<Option<usize>>::new());
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}
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#[test]
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fn keyboard_navigation_skips_disabled_rows_and_never_wraps() {
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let (_cx, mut visual, _window, changes) = list_window(None);
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click(&mut visual, point(px(50.), px(16.)));
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visual.simulate_keystrokes("down"); // over the disabled row → Two
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visual.simulate_keystrokes("down"); // over the disabled row → Three
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visual.simulate_keystrokes("down"); // last selectable; no wrap
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draw(&mut visual);
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assert_eq!(*changes.borrow(), vec![Some(0), Some(1), Some(3)]);
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visual.simulate_keystrokes("home");
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visual.simulate_keystrokes("end");
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visual.simulate_keystrokes("up"); // over the disabled row → Two
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draw(&mut visual);
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assert_eq!(
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*changes.borrow(),
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vec![Some(0), Some(1), Some(3), Some(0), Some(3), Some(1)]
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);
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}
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#[test]
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fn arrow_down_with_no_selection_picks_the_first_selectable_row() {
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let (mut cx, mut visual, window, changes) = list_window(Some(1));
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// Focus the list, then clear the selection app-side.
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click(&mut visual, point(px(50.), px(48.)));
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window
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.update(&mut cx, |harness, _, cx| {
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harness.selected = None;
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cx.notify();
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})
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.unwrap();
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draw(&mut visual);
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visual.simulate_keystrokes("down");
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draw(&mut visual);
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assert_eq!(*changes.borrow(), vec![Some(1), Some(0)]);
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}
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