gstack/browse/test/browser-manager-unit.test.ts

91 lines
3.8 KiB
TypeScript

import { EventEmitter } from 'node:events';
import { describe, it, expect } from 'bun:test';
// ─── BrowserManager basic unit tests ─────────────────────────────
describe('BrowserManager defaults', () => {
it('getConnectionMode defaults to launched', async () => {
const { BrowserManager } = await import('../src/browser-manager');
const bm = new BrowserManager();
expect(bm.getConnectionMode()).toBe('launched');
});
it('getRefMap returns empty array initially', async () => {
const { BrowserManager } = await import('../src/browser-manager');
const bm = new BrowserManager();
expect(bm.getRefMap()).toEqual([]);
});
});
// ─── resolveDisconnectCause ──────────────────────────────────────
//
// Pinning the clean-vs-crash distinction matters because gbd's
// HealthMonitor consumes our exit code (0 = don't restart, !=0 =
// restart). A regression here brings back the "Cmd+Q makes the browser
// keep coming back" UX bug.
function makeFakeBrowser(opts: {
exitCode: number | null;
signalCode: NodeJS.Signals | null;
/** ms before emitting 'exit'; default = already exited at construction */
exitDelay?: number;
}): { process(): { exitCode: number | null; signalCode: NodeJS.Signals | null; once: EventEmitter['once'] } } {
const ee = new EventEmitter();
const state = {
exitCode: opts.exitDelay != null ? null : opts.exitCode,
signalCode: opts.exitDelay != null ? null : opts.signalCode,
once: ee.once.bind(ee),
};
if (opts.exitDelay != null) {
setTimeout(() => {
state.exitCode = opts.exitCode;
state.signalCode = opts.signalCode;
ee.emit('exit', opts.exitCode, opts.signalCode);
}, opts.exitDelay);
}
return { process: () => state };
}
describe('resolveDisconnectCause', () => {
it('clean: process already exited with code 0', async () => {
const { resolveDisconnectCause } = await import('../src/browser-manager');
const fake = makeFakeBrowser({ exitCode: 0, signalCode: null });
expect(await resolveDisconnectCause(fake as never)).toBe('clean');
});
it('crash: non-zero exit code', async () => {
const { resolveDisconnectCause } = await import('../src/browser-manager');
const fake = makeFakeBrowser({ exitCode: 1, signalCode: null });
expect(await resolveDisconnectCause(fake as never)).toBe('crash');
});
it('crash: SIGSEGV', async () => {
const { resolveDisconnectCause } = await import('../src/browser-manager');
const fake = makeFakeBrowser({ exitCode: null, signalCode: 'SIGSEGV' });
expect(await resolveDisconnectCause(fake as never)).toBe('crash');
});
it('crash: SIGKILL', async () => {
const { resolveDisconnectCause } = await import('../src/browser-manager');
const fake = makeFakeBrowser({ exitCode: null, signalCode: 'SIGKILL' });
expect(await resolveDisconnectCause(fake as never)).toBe('crash');
});
it('clean: process exits asynchronously with code 0 within timeout', async () => {
const { resolveDisconnectCause } = await import('../src/browser-manager');
const fake = makeFakeBrowser({ exitCode: 0, signalCode: null, exitDelay: 50 });
expect(await resolveDisconnectCause(fake as never)).toBe('clean');
});
it('crash: process exits asynchronously with non-zero code', async () => {
const { resolveDisconnectCause } = await import('../src/browser-manager');
const fake = makeFakeBrowser({ exitCode: 137, signalCode: null, exitDelay: 50 });
expect(await resolveDisconnectCause(fake as never)).toBe('crash');
});
it('crash: null browser returns crash (defensive default)', async () => {
const { resolveDisconnectCause } = await import('../src/browser-manager');
expect(await resolveDisconnectCause(null)).toBe('crash');
});
});