split toast into alert and toast

crates/core/tests/alert_stack.rs

@@ -0,0 +1,72 @@
+use std::rc::Rc;
+
+use gpui::{AppContext as _, TestAppContext};
+use gpui_native_core::alert::{Alert, AlertSeverity, Alerts};
+use gpui_native_theme::Theme;
+
+fn alerts_stack() -> (TestAppContext, gpui::Entity<Alerts>) {
+    let cx = TestAppContext::single();
+    cx.update(Theme::init);
+    let alerts = cx.update(|cx| cx.new(|_| Alerts::default()));
+    (cx, alerts)
+}
+
+#[test]
+fn pushed_alerts_stack_up_and_dismiss_by_id() {
+    let (cx, alerts) = alerts_stack();
+
+    cx.update(|cx| {
+        alerts.update(cx, |alerts, cx| {
+            alerts.push(
+                Alert::new("a").title("First").severity(AlertSeverity::Info),
+                cx,
+            );
+            alerts.push(
+                Alert::new("b")
+                    .title("Second")
+                    .severity(AlertSeverity::Warning),
+                cx,
+            );
+        });
+    });
+    assert_eq!(cx.update(|cx| alerts.read(cx).count()), 2);
+
+    cx.update(|cx| {
+        alerts.update(cx, |alerts, cx| alerts.dismiss(0, cx));
+    });
+    assert_eq!(cx.update(|cx| alerts.read(cx).count()), 1);
+
+    // Duplicate ids are fine: the stack re-keys each entry to its own id.
+    cx.update(|cx| {
+        alerts.update(cx, |alerts, cx| {
+            alerts.push(Alert::new("b").title("Third"), cx);
+        });
+    });
+    assert_eq!(cx.update(|cx| alerts.read(cx).count()), 2);
+}
+
+#[test]
+fn the_close_button_routes_through_the_store_and_runs_the_handler() {
+    let (cx, alerts) = alerts_stack();
+    let dismissed = Rc::new(std::cell::RefCell::new(false));
+
+    cx.update(|cx| {
+        let handler = dismissed.clone();
+        alerts.update(cx, |alerts, cx| {
+            alerts.push(
+                Alert::new("a").title("Sync failed").on_dismiss(move |_| {
+                    *handler.borrow_mut() = true;
+                }),
+                cx,
+            );
+        });
+    });
+
+    // The pushed alert's close button calls the store's dismissal, which
+    // then runs the handler.
+    cx.update(|cx| {
+        alerts.update(cx, |alerts, cx| alerts.dismiss(0, cx));
+    });
+    assert!(*dismissed.borrow());
+    assert_eq!(cx.update(|cx| alerts.read(cx).count()), 0);
+}