45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
|
import { describe, expect, test } from 'bun:test';
|
||
|
|
import { EventEmitter } from 'node:events';
|
||
|
|
import { createServerStartupRuntime } from './server-startup-runtime.js';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The desktop app embeds this server and nothing restarts it, so shutting down
|
||
|
|
* on a single uncaught exception turned every stray socket error into "the
|
||
|
|
* instance is unreachable until restarted". Only a sustained storm shuts down.
|
||
|
|
*/
|
||
|
|
describe('uncaught exception policy', () => {
|
||
|
|
const setup = () => {
|
||
|
|
const fakeProcess = new EventEmitter();
|
||
|
|
let shutdowns = 0;
|
||
|
|
const runtime = createServerStartupRuntime({
|
||
|
|
process: fakeProcess,
|
||
|
|
gracefulShutdown: () => { shutdowns += 1; },
|
||
|
|
getSignalsAttached: () => true,
|
||
|
|
setSignalsAttached: () => {},
|
||
|
|
syncToHmrState: () => {},
|
||
|
|
});
|
||
|
|
runtime.attachProcessHandlers({ attachSignals: false });
|
||
|
|
return { fakeProcess, shutdowns: () => shutdowns };
|
||
|
|
};
|
||
|
|
|
||
|
|
test('a single uncaught exception keeps the server running', () => {
|
||
|
|
const { fakeProcess, shutdowns } = setup();
|
||
|
|
fakeProcess.emit('uncaughtException', new Error('setTypeOfService EINVAL'));
|
||
|
|
expect(shutdowns()).toBe(0);
|
||
|
|
});
|
||
|
|
|
||
|
|
test('a storm of uncaught exceptions still shuts down', () => {
|
||
|
|
const { fakeProcess, shutdowns } = setup();
|
||
|
|
for (let i = 0; i < 11; i += 1) {
|
||
|
|
fakeProcess.emit('uncaughtException', new Error(`stray ${i}`));
|
||
|
|
}
|
||
|
|
expect(shutdowns()).toBeGreaterThan(0);
|
||
|
|
});
|
||
|
|
|
||
|
|
test('an unhandled rejection is logged without shutting down', () => {
|
||
|
|
const { fakeProcess, shutdowns } = setup();
|
||
|
|
fakeProcess.emit('unhandledRejection', new Error('late failure'), Promise.resolve());
|
||
|
|
expect(shutdowns()).toBe(0);
|
||
|
|
});
|
||
|
|
});
|