fix(app): handle deleted session sync cache in V2 titlebar (#29328)

packages/app/src/components/titlebar-session-events.test.ts

@@ -0,0 +1,28 @@
+import { describe, expect, test } from "bun:test"
+import { readSessionTabsRemovedDetail, SESSION_TABS_REMOVED_EVENT } from "./titlebar-session-events"
+
+describe("titlebar session events", () => {
+  test("reads valid removed session tab details", () => {
+    expect(
+      readSessionTabsRemovedDetail(
+        new CustomEvent(SESSION_TABS_REMOVED_EVENT, {
+          detail: { directory: "/tmp/project", sessionIDs: ["ses_1", "ses_2", 1] },
+        }),
+      ),
+    ).toEqual({
+      directory: "/tmp/project",
+      sessionIDs: ["ses_1", "ses_2"],
+    })
+  })
+
+  test("ignores invalid removed session tab details", () => {
+    expect(readSessionTabsRemovedDetail(new Event(SESSION_TABS_REMOVED_EVENT))).toBeUndefined()
+    expect(
+      readSessionTabsRemovedDetail(
+        new CustomEvent(SESSION_TABS_REMOVED_EVENT, {
+          detail: { directory: "/tmp/project", sessionIDs: [] },
+        }),
+      ),
+    ).toBeUndefined()
+  })
+})