add toast

crates/core/tests/toast.rs

@@ -0,0 +1,89 @@
+use std::cell::RefCell;
+use std::rc::Rc;
+use std::time::Duration;
+
+use gpui::{AppContext as _, TestAppContext};
+use gpui_native_core::toast::{Toast, ToastSeverity, Toasts};
+use gpui_native_theme::Theme;
+
+fn toasts_store() -> (TestAppContext, gpui::Entity<Toasts>) {
+    let cx = TestAppContext::single();
+    cx.update(Theme::init);
+    let toasts = cx.update(|cx| cx.new(|_| Toasts::default()));
+    (cx, toasts)
+}
+
+#[test]
+fn push_raises_a_toast_and_the_timer_dismisses_it() {
+    let (cx, toasts) = toasts_store();
+
+    let id = cx.update(|cx| {
+        toasts.update(cx, |toasts, cx| {
+            toasts.push(Toast::new("Saved").severity(ToastSeverity::Success), cx)
+        })
+    });
+    assert_eq!(cx.update(|cx| toasts.read(cx).count()), 1);
+
+    // The default lifetime is five seconds.
+    cx.executor().advance_clock(Toast::DURATION);
+    cx.run_until_parked();
+    assert_eq!(cx.update(|cx| toasts.read(cx).count()), 0);
+    let _ = id;
+}
+
+#[test]
+fn sticky_toasts_ignore_the_timer_until_dismissed() {
+    let (cx, toasts) = toasts_store();
+
+    let id = cx.update(|cx| {
+        toasts.update(cx, |toasts, cx| {
+            toasts.push(Toast::new("Sticky").duration(Duration::ZERO), cx)
+        })
+    });
+
+    cx.executor().advance_clock(Toast::DURATION * 4);
+    cx.run_until_parked();
+    assert_eq!(cx.update(|cx| toasts.read(cx).count()), 1);
+
+    cx.update(|cx| {
+        toasts.update(cx, |toasts, cx| toasts.dismiss(id, cx));
+    });
+    assert_eq!(cx.update(|cx| toasts.read(cx).count()), 0);
+}
+
+#[test]
+fn dismiss_runs_the_handler_and_clear_removes_everything() {
+    let (cx, toasts) = toasts_store();
+    let dismissed = Rc::new(std::cell::RefCell::new(Vec::<&'static str>::new()));
+
+    let ids = cx.update(|cx| {
+        toasts.update(cx, |toasts, cx| {
+            let first = dismissed.clone();
+            let second = dismissed.clone();
+            vec![
+                toasts.push(
+                    Toast::new("first").on_dismiss(move |_| record(&first, "first")),
+                    cx,
+                ),
+                toasts.push(
+                    Toast::new("second").on_dismiss(move |_| record(&second, "second")),
+                    cx,
+                ),
+            ]
+        })
+    });
+
+    cx.update(|cx| {
+        toasts.update(cx, |toasts, cx| toasts.dismiss(ids[0], cx));
+    });
+    assert_eq!(*dismissed.borrow(), vec!["first"]);
+
+    cx.update(|cx| {
+        toasts.update(cx, |toasts, cx| toasts.clear(cx));
+    });
+    assert_eq!(cx.update(|cx| toasts.read(cx).count()), 0);
+
+    fn record(sink: &Rc<RefCell<Vec<&'static str>>>, what: &'static str) {
+        sink.borrow_mut().push(what);
+    }
+}