| 1 | // Run: tsx src/__tests__/crash-rejection-containment.test.ts |
| 2 | // |
| 3 | // A rejected desktop bridge call arrives as a bare string (or a stackless object). That |
| 4 | // is an ordinary backend error and must never paint the full-screen crash |
| 5 | // overlay; only rejections carrying a real stack keep the crash surface. |
| 6 | |
| 7 | import { JSDOM } from "jsdom"; |
| 8 | |
| 9 | const dom = new JSDOM("<!doctype html><html><body></body></html>", { url: "http://localhost/" }); |
| 10 | globalThis.window = dom.window as unknown as Window & typeof globalThis; |
| 11 | globalThis.document = dom.window.document; |
| 12 | globalThis.CustomEvent = dom.window.CustomEvent; |
| 13 | globalThis.Event = dom.window.Event; |
| 14 | Object.defineProperty(globalThis, "navigator", { configurable: true, value: dom.window.navigator }); |
| 15 | |
| 16 | const { installGlobalCrashHandlers, isRecoverableRejectionReason, onRecoverableError } = await import("../lib/globalCrashHandlers"); |
| 17 | const { setFrontendDiagnosticSink } = await import("../lib/frontendDiagnosticBridge"); |
| 18 | |
| 19 | let passed = 0; |
| 20 | let failed = 0; |
| 21 | |
| 22 | function ok(cond: boolean, label: string) { |
| 23 | if (cond) { |
| 24 | process.stdout.write(` PASS ${label}\n`); |
| 25 | passed += 1; |
| 26 | } else { |
| 27 | process.stdout.write(` FAIL ${label}\n`); |
| 28 | failed += 1; |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | const diagnostics: string[] = []; |
| 33 | setFrontendDiagnosticSink((_source, type) => { diagnostics.push(type); }); |
| 34 | const toasts: string[] = []; |
| 35 | onRecoverableError(({ message }) => { toasts.push(message); }); |
| 36 | const originalConsoleError = console.error; |
| 37 | console.error = () => {}; |
| 38 | |
| 39 | // Mirrors main.tsx: bridge-level filters are installed before the crash handlers. |
| 40 | window.addEventListener("unhandledrejection", (e) => { if (e.reason === "bridge-filtered") e.preventDefault(); }); |
| 41 | installGlobalCrashHandlers(); |
| 42 | |
| 43 | function rejectWith(reason: unknown): Event { |
| 44 | const event = new dom.window.Event("unhandledrejection", { cancelable: true }); |
| 45 | Object.defineProperty(event, "reason", { value: reason }); |
| 46 | window.dispatchEvent(event); |
| 47 | return event; |
| 48 | } |
| 49 | const overlay = () => document.getElementById("crash-overlay"); |
| 50 | |
| 51 | console.log("\ncrash rejection containment"); |
| 52 | |
| 53 | const stacked = new TypeError("renderer fault"); |
| 54 | stacked.stack = "TypeError: renderer fault\n at render (src/App.tsx:12:3)"; |
| 55 | ok(isRecoverableRejectionReason("selected branch is outside the recovery lineage"), "a bare Go error string is recoverable"); |
| 56 | ok(isRecoverableRejectionReason({ message: "stackless error-like object" }), "a stackless error-like object is recoverable"); |
| 57 | ok(isRecoverableRejectionReason(undefined), "an undefined reason is recoverable"); |
| 58 | ok(!isRecoverableRejectionReason(stacked), "an Error with a stack is a genuine crash"); |
| 59 | |
| 60 | const backend = rejectWith("selected branch is outside the recovery lineage"); |
| 61 | ok(backend.defaultPrevented, "a backend rejection is marked handled"); |
| 62 | ok(overlay() === null, "a backend rejection does not paint the crash overlay"); |
| 63 | ok( |
| 64 | toasts.length === 1 && toasts[0] === "selected branch is outside the recovery lineage", |
| 65 | "a backend rejection dispatches the recoverable-error event with its message", |
| 66 | ); |
| 67 | ok(diagnostics.includes("unhandled-backend-rejection"), "a backend rejection records a frontend diagnostic"); |
| 68 | |
| 69 | rejectWith('remote tab "remote-1" status was superseded by newer runtime state'); |
| 70 | ok(overlay() === null && toasts.length === 1, "existing crash suppressions still short-circuit before containment"); |
| 71 | |
| 72 | rejectWith("bridge-filtered"); |
| 73 | ok(overlay() === null && toasts.length === 1, "a rejection already handled by a bridge filter is left alone"); |
| 74 | |
| 75 | const crash = rejectWith(stacked); |
| 76 | ok(!crash.defaultPrevented, "a stacked Error rejection stays unhandled for the crash surface"); |
| 77 | ok((overlay()?.textContent ?? "").includes("renderer fault"), "a stacked Error rejection still paints the crash overlay"); |
| 78 | ok(toasts.length === 1, "a stacked Error rejection is not downgraded to a toast"); |
| 79 | |
| 80 | overlay()?.remove(); |
| 81 | window.dispatchEvent(new dom.window.ErrorEvent("error", { message: "renderer fault", error: stacked, cancelable: true })); |
| 82 | ok((overlay()?.textContent ?? "").includes("renderer fault"), "window.error still paints the crash overlay"); |
| 83 | |
| 84 | console.error = originalConsoleError; |
| 85 | dom.window.close(); |
| 86 | console.log(`\n${passed} passed, ${failed} failed, ${passed + failed} total`); |
| 87 | if (failed > 0) process.exit(1); |
| 88 |