mirror of https://github.com/garrytan/gstack.git
50 lines
2.1 KiB
TypeScript
50 lines
2.1 KiB
TypeScript
/**
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* Guard: no test file may schedule a delayed process.exit().
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*
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* `bun test` runs EVERY test file in one process. The pattern of arming a
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* 500ms timer in afterAll whose callback calls process.exit(0) — once used
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* in several browse/design tests as a "bm.close() can hang" workaround —
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* assumes each file gets its own process. It doesn't: the armed timer fires
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* 500ms later, mid-way through a LATER test file, and kills the entire
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* suite with exit code 0 and no summary. The truncated run silently masks
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* every downstream failure (observed: only ~16 of 434 files ran, shell
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* exit 0).
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*
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* This test statically scans every *.test.ts in the repo and fails if any
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* schedules process.exit via setTimeout. Teardown must only release the
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* file's own resources (e.g. `await bm.close()` — BrowserManager.close()
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* is already time-boxed internally) — never terminate the shared runner.
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*
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* If a future test legitimately needs this pattern inside a child-process
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* script (template literal passed to `bun -e`), split the child script
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* into a fixture file instead of exempting it here.
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*/
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import { test, expect } from 'bun:test';
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import fs from 'node:fs';
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import path from 'node:path';
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const repoRoot = path.resolve(import.meta.dir, '..');
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// Matches a setTimeout whose arrow callback (with or without an argument)
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// immediately calls process.exit. Doesn't match its own escaped source text
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// (the backslashes in this regex literal prevent a literal-text match).
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const DELAYED_EXIT = /setTimeout\(\s*(?:\(\s*\)|\(?\w+\)?)\s*=>\s*process\.exit\(/;
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test('no test file schedules a delayed process.exit (kills the whole bun test run)', () => {
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const glob = new Bun.Glob('**/*.test.ts');
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const violations: string[] = [];
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for (const rel of glob.scanSync({ cwd: repoRoot })) {
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if (rel.includes('node_modules/')) continue;
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const source = fs.readFileSync(path.join(repoRoot, rel), 'utf-8');
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const lines = source.split('\n');
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for (let i = 0; i < lines.length; i++) {
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if (DELAYED_EXIT.test(lines[i])) {
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violations.push(`${rel}:${i + 1}: ${lines[i].trim()}`);
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}
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}
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}
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expect(violations).toEqual([]);
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});
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