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memos/web/tests/setup.ts

43 lines
1.4 KiB
TypeScript

import "@testing-library/jest-dom/vitest";
import { cleanup } from "@testing-library/react";
import { afterEach } from "vitest";
// With `globals: false`, @testing-library/react does not auto-register a
// cleanup hook, so unmount rendered trees between tests explicitly. This keeps
// `screen.getByTestId` from seeing DOM from prior tests in the same file.
afterEach(() => {
cleanup();
});
// Defensive shim: `@/auth-state` constructs a BroadcastChannel at module load
// to coordinate token refreshes across tabs. jsdom historically has not shipped
// BroadcastChannel, so any future test that transitively imports auth-state
// would otherwise throw. Current tests avoid that import path on purpose, but
// installing the shim keeps authoring new tests frictionless. No-op when jsdom
// already provides an implementation.
if (typeof globalThis.BroadcastChannel === "undefined") {
class NoopBroadcastChannel {
readonly name: string;
onmessage: ((event: MessageEvent) => void) | null = null;
constructor(name: string) {
this.name = name;
}
postMessage(_data: unknown): void {}
close(): void {}
addEventListener(): void {}
removeEventListener(): void {}
dispatchEvent(): boolean {
return true;
}
}
// @ts-expect-error — attach the shim to the global scope for tests.
globalThis.BroadcastChannel = NoopBroadcastChannel;
}