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ThothII/frontend/src/shell/WidgetHost.test.tsx
T

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TypeScript

import { act, cleanup, render, screen } from "@testing-library/react";
import { WidgetHost } from "./WidgetHost";
import { useSessionStore } from "../store/sessionStore";
import type { WidgetDescriptor } from "../api/types";
// Replace the widget registry with a renderer that always throws, simulating a
// viewer/widget that crashes on malformed gate data (the real white-screen path).
vi.mock("../widgets", () => ({
resolve: () => function Exploding() {
throw new Error("bad gate payload");
},
}));
let errorSpy: ReturnType<typeof vi.spyOn>;
beforeEach(() => {
errorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
useSessionStore.getState().resetSession();
});
afterEach(() => {
cleanup();
errorSpy.mockRestore();
act(() => useSessionStore.getState().resetSession());
});
const gate: WidgetDescriptor = { id: "g1", widget: "select", title: "Choose" };
test("a crashing widget shows a fallback instead of unmounting the app", async () => {
useSessionStore.setState({ pendingWidget: gate });
await act(async () => { render(<WidgetHost sessionId="s1" />); });
// No throw escaped: the fallback rendered.
expect(await screen.findByRole("alert")).toBeInTheDocument();
expect(await screen.findByText(/couldn't be displayed/i)).toBeInTheDocument();
// The store (and thus the surrounding app) is still alive and interactive.
expect(useSessionStore.getState().pendingWidget).toEqual(gate);
});