import { describe, expect, it } from "vite-plus/test"; import {  INITIAL_WEBVIEW_CRASH_RECOVERY_STATE,  planWebviewCrashRecovery,  WEBVIEW_CRASH_RECOVERY_WINDOW_MS,} from "./webviewCrashRecovery"; describe("planWebviewCrashRecovery", () => {  it("backs off and stops after a bounded number of rapid crashes", () => {    const first = planWebviewCrashRecovery(INITIAL_WEBVIEW_CRASH_RECOVERY_STATE, 1_000);    expect(first).not.toBeNull();    expect(first?.delayMs).toBe(250);     const second = planWebviewCrashRecovery(first!.state, 1_100);    expect(second).not.toBeNull();    expect(second?.delayMs).toBe(500);     const third = planWebviewCrashRecovery(second!.state, 1_200);    expect(third).not.toBeNull();    expect(third?.delayMs).toBe(1_000);     expect(planWebviewCrashRecovery(third!.state, 1_300)).toBeNull();  });   it("allows recovery again after the crash window expires", () => {    const first = planWebviewCrashRecovery(INITIAL_WEBVIEW_CRASH_RECOVERY_STATE, 1_000)!;    const second = planWebviewCrashRecovery(first.state, 1_100)!;    const third = planWebviewCrashRecovery(second.state, 1_200)!;     expect(planWebviewCrashRecovery(third.state, 1_000 + WEBVIEW_CRASH_RECOVERY_WINDOW_MS)).toEqual(      {        delayMs: 250,        state: {          attempts: 1,          windowStartedAt: 1_000 + WEBVIEW_CRASH_RECOVERY_WINDOW_MS,        },      },    );  });});