chore: audit all components (#2)

Reviewed-on: #2

crates/core/tests/input.rs

@@ -3,12 +3,15 @@ use gpui::{
     MouseUpEvent, ParentElement as _, Render, ScrollDelta, ScrollEvent, Styled as _,
     TestAppContext, VisualTestContext, Window, div, point, px,
 };
+use gpui_native_core::button::{Button, ButtonVariant};
+use gpui_native_core::common::Sizable as _;
 use gpui_native_core::input::{
     INPUT_CONTEXT, Input, InputBindings, InputState, InputStateEvent, Submit, SubmitOn,
     bind_input_keys,
 };
-use gpui_native_theme::Theme;
-use std::cell::RefCell;
+use gpui_native_icons::IconRole;
+use gpui_native_theme::{BORDER_WIDTH, Size, Theme};
+use std::cell::{Cell, RefCell};
 use std::rc::Rc;
 use std::time::Duration;
 
@@ -266,42 +269,45 @@ fn read_only_refuses_edits_but_keeps_selection_and_copy() {
     assert_eq!(clipboard, "lo");
 
     // The caret is suppressed entirely while read-only.
-    let caret = cx.update(|cx| state.update(cx, |state, cx| state.caret_visible(true, cx)));
+    let caret = cx.update(|cx| state.update(cx, |state, _| state.caret_visible(true)));
     assert!(!caret);
 }
 
 #[test]
-fn caret_blinks_while_focused_and_holds_solid_while_typing() {
+fn the_caret_visibility_is_pure_time_math_against_the_epoch() {
     let (cx, state, mut visual) = input_window("", false);
     focus(&mut visual, &state);
-    visual.update(|window, cx| {
-        window.draw(cx).clear(cx);
-    });
-    visual.run_until_parked();
+    let caret = || cx.update(|cx| state.update(cx, |state, _| state.caret_visible(true)));
 
-    let caret = || cx.update(|cx| state.update(cx, |state, cx| state.caret_visible(true, cx)));
-
-    // The caret shows on focus, hides after one interval, and reappears
-    // after another.
-    assert!(caret());
-    cx.executor().advance_clock(Duration::from_millis(500));
-    visual.run_until_parked();
-    assert!(!caret());
-    cx.executor().advance_clock(Duration::from_millis(500));
-    visual.run_until_parked();
+    // Fresh focus starts a new epoch: the caret shows solid — the elapsed
+    // time since the epoch began is microseconds, far under one interval.
     assert!(caret());
 
-    // Typing holds the caret solid and restarts the cycle.
+    // Typing restarts the epoch, so the caret stays solid through edits.
     visual.simulate_keystrokes("a");
     assert!(caret());
-    cx.executor().advance_clock(Duration::from_millis(500));
-    visual.run_until_parked();
-    assert!(!caret());
 
-    // An unfocused field reports no caret.
-    let caret_unfocused =
-        cx.update(|cx| state.update(cx, |state, cx| state.caret_visible(false, cx)));
-    assert!(!caret_unfocused);
+    // The blink cadence itself: hidden in the second half of the cycle.
+    let hidden = cx.update(|cx| {
+        state.update(cx, |state, _| {
+            state.caret_blink_visible_at(true, Duration::from_millis(700))
+        })
+    });
+    assert!(!hidden);
+    let visible = cx.update(|cx| {
+        state.update(cx, |state, _| {
+            state.caret_blink_visible_at(true, Duration::from_millis(300))
+        })
+    });
+    assert!(visible);
+
+    // An unfocused field reports no caret, at any point in the cycle.
+    let unfocused = cx.update(|cx| {
+        state.update(cx, |state, _| {
+            state.caret_blink_visible_at(false, Duration::from_millis(100))
+        })
+    });
+    assert!(!unfocused);
 }
 
 #[test]
@@ -459,15 +465,6 @@ fn disabled_input_ignores_typing_and_clicks() {
     assert_eq!(value(&cx, &state), "");
 }
 
-#[test]
-fn set_value_replaces_the_buffer() {
-    let (cx, state, mut visual) = input_window("", false);
-    visual.update(|window, cx| {
-        state.update(cx, |state, cx| state.set_value("preset", window, cx));
-    });
-    assert_eq!(value(&cx, &state), "preset");
-}
-
 /// Subscribes to `state`'s events, recording each variant into a sink that
 /// lives for the rest of the test. The returned `Subscription` must stay
 /// bound for the same lifetime — dropping it unsubscribes.
@@ -536,26 +533,6 @@ fn set_value_silent_updates_without_emitting() {
     assert_eq!(count(&sink, &InputStateEvent::TextChanged), 0);
 }
 
-#[test]
-fn focus_and_blur_emit_events() {
-    let (mut cx, state, mut visual) = input_window("", false);
-    let (sink, _subscription) = record_events(&mut cx, &state);
-
-    focus(&mut visual, &state);
-    visual.update(|window, cx| {
-        window.draw(cx).clear(cx);
-    });
-    visual.run_until_parked();
-    assert_eq!(count(&sink, &InputStateEvent::Focused), 1);
-
-    visual.update(|window, cx| window.blur(cx));
-    visual.update(|window, cx| {
-        window.draw(cx).clear(cx);
-    });
-    visual.run_until_parked();
-    assert_eq!(count(&sink, &InputStateEvent::Blurred), 1);
-}
-
 #[test]
 fn pasted_newlines_become_spaces() {
     let (cx, state, mut visual) = input_window("", false);
@@ -568,15 +545,6 @@ fn pasted_newlines_become_spaces() {
     assert_eq!(value(&cx, &state), "a bc");
 }
 
-#[test]
-fn set_value_sanitizes_newlines() {
-    let (cx, state, mut visual) = input_window("", false);
-    visual.update(|window, cx| {
-        state.update(cx, |state, cx| state.set_value("a\nb", window, cx));
-    });
-    assert_eq!(value(&cx, &state), "a b");
-}
-
 #[test]
 fn enter_emits_submitted() {
     let (mut cx, state, mut visual) = input_window("draft", false);
@@ -763,6 +731,36 @@ fn the_reveal_toggle_flips_masking() {
     assert!(!revealed, "the toggle should mask the field again");
 }
 
+/// The reveal pill sits with equal insets on its three free sides; the
+/// small control metric must stay whole-pixel or snapping skews it.
+#[test]
+fn the_reveal_pill_insets_equally() {
+    let (cx, _state, mut visual) = reveal_window();
+
+    let field = visual.debug_bounds("input-field").expect("field missing");
+    let pill = visual
+        .debug_bounds("input-reveal-button")
+        .expect("reveal pill missing");
+
+    cx.update(|cx| {
+        let theme = Theme::global(cx);
+        let small = theme.sizes.resolve(Size::Small);
+        let border = BORDER_WIDTH;
+        let docked = small.control_height + border * 2.0;
+        let inset = ((field.size.height - border * 2.0 - docked) / 2.0).max(px(0.));
+
+        let top_gap = pill.top() - (field.top() + border);
+        let bottom_gap = (field.bottom() - border) - pill.bottom();
+        let right_gap = (field.right() - border) - pill.right();
+        assert!(
+            (top_gap - inset).abs() < px(0.01)
+                && (bottom_gap - inset).abs() < px(0.01)
+                && (right_gap - inset).abs() < px(0.01),
+            "pill gaps top {top_gap:?} bottom {bottom_gap:?} right {right_gap:?} vs inset {inset:?}"
+        );
+    });
+}
+
 #[test]
 fn the_caret_can_rest_on_a_line_break() {
     let (cx, state, mut visual) = multiline_window("ab\ncdef");
@@ -906,3 +904,131 @@ fn vertical_scroll_keeps_the_caret_in_view() {
         .unwrap_or_default();
     assert!(first_row_top < px(0.), "first row top: {first_row_top:?}");
 }
+
+struct EdgeHarness {
+    state: Entity<InputState>,
+    clicked: Rc<Cell<bool>>,
+}
+
+impl Render for EdgeHarness {
+    fn render(
+        &mut self,
+        _window: &mut Window,
+        _cx: &mut gpui::Context<Self>,
+    ) -> impl gpui::IntoElement {
+        let clicked = self.clicked.clone();
+        div().w(px(400.)).p_4().child(
+            Input::new("edge-input", self.state.clone())
+                .placeholder("Search")
+                .prefix(
+                    Button::new("edge-input-prefix-button")
+                        .icon(IconRole::Search)
+                        .variant(ButtonVariant::Ghost)
+                        .small(),
+                )
+                .suffix(
+                    Button::new("edge-input-suffix-button")
+                        .debug_selector(|| "edge-suffix-button".to_string())
+                        .icon(IconRole::Plus)
+                        .variant(ButtonVariant::Ghost)
+                        .small()
+                        .on_click(move |_, _, _| clicked.set(true)),
+                ),
+        )
+    }
+}
+
+fn edge_input_window(
+    initial: &str,
+) -> (
+    TestAppContext,
+    Entity<InputState>,
+    VisualTestContext,
+    Rc<Cell<bool>>,
+) {
+    let clicked = Rc::new(Cell::new(false));
+    let clicked_for_window = clicked.clone();
+    let mut cx = TestAppContext::single();
+    cx.update(|cx| {
+        Theme::init(cx);
+        bind_input_keys(cx, InputBindings::default());
+    });
+    let state = cx.update(|cx| InputState::new_with_text(initial, cx));
+    let state_for_window = state.clone();
+    let window = cx.add_window(move |_, _| EdgeHarness {
+        state: state_for_window,
+        clicked: clicked_for_window,
+    });
+    let mut visual = VisualTestContext::from_window(window.into(), &cx);
+    visual.update(|window, cx| {
+        window.draw(cx).clear(cx);
+    });
+    (cx, state, visual, clicked)
+}
+
+/// Prefix and suffix dock flush inside the field, prefix leading, and a
+/// small button in a zone centers with equal insets like the reveal pill.
+#[test]
+fn prefix_and_suffix_dock_inside_the_field() {
+    let (cx, _state, mut visual, _clicked) = edge_input_window("abc");
+
+    let field = visual.debug_bounds("input-field").expect("field missing");
+    let prefix = visual
+        .debug_bounds("input-prefix")
+        .expect("prefix zone missing");
+    let suffix = visual
+        .debug_bounds("input-suffix")
+        .expect("suffix zone missing");
+    let pill = visual
+        .debug_bounds("edge-suffix-button")
+        .expect("suffix button missing");
+
+    assert!(prefix.left() >= field.left());
+    assert!(prefix.right() <= suffix.left());
+    assert!(suffix.right() <= field.right());
+
+    cx.update(|cx| {
+        let theme = Theme::global(cx);
+        let small = theme.sizes.resolve(Size::Small);
+        let border = BORDER_WIDTH;
+        let docked = small.control_height + border * 2.0;
+        let inset = ((field.size.height - border * 2.0 - docked) / 2.0).max(px(0.));
+
+        let top_gap = pill.top() - (field.top() + border);
+        let bottom_gap = (field.bottom() - border) - pill.bottom();
+        let right_gap = (field.right() - border) - pill.right();
+        assert!(
+            (top_gap - inset).abs() < px(0.01)
+                && (bottom_gap - inset).abs() < px(0.01)
+                && (right_gap - inset).abs() < px(0.01),
+            "suffix pill gaps top {top_gap:?} bottom {bottom_gap:?} right {right_gap:?} vs inset {inset:?}"
+        );
+    });
+}
+
+/// A click on a docked control activates it without running the field's
+/// caret handler underneath.
+#[test]
+fn a_suffix_click_activates_without_focusing_the_field() {
+    let (cx, state, mut visual, clicked) = edge_input_window("abc");
+
+    let bounds = visual
+        .debug_bounds("input-suffix")
+        .expect("suffix zone missing");
+    click(
+        &mut visual,
+        point(
+            bounds.left() + bounds.size.width / 2.0,
+            bounds.top() + bounds.size.height / 2.0,
+        ),
+    );
+
+    assert!(clicked.get(), "the suffix button should activate");
+    let focused = visual.update(|window, cx| state.read(cx).focus_handle().is_focused(window));
+    assert!(!focused, "the suffix click must not focus the field");
+
+    // The zone must not swallow text interaction either.
+    focus(&mut visual, &state);
+    visual.simulate_keystrokes("x");
+    assert_eq!(value(&cx, &state), "abcx");
+}