| 1 | import { test } from 'node:test'; |
| 2 | import assert from 'node:assert/strict'; |
| 3 | import { spawnAgent } from '../dist/index.js'; |
| 4 | import type { AgentDef } from '../dist/index.js'; |
| 5 | |
| 6 | // Regression coverage for issue #9 mojibake (◆◆◆): a multi-byte UTF-8 char |
| 7 | // split across two stdout `data` chunks must not become U+FFFD. spawn.ts now |
| 8 | // decodes through StringDecoder, which buffers an incomplete trailing sequence. |
| 9 | |
| 10 | // A child that prints CJK text ONE BYTE AT A TIME with a tick between bytes, so |
| 11 | // every 3-byte glyph is guaranteed to straddle multiple `data` events. |
| 12 | const BYTE_AT_A_TIME = ` |
| 13 | const s = Buffer.from('设计引擎：每次使用都是一次进化。', 'utf8'); |
| 14 | let i = 0; |
| 15 | (function next() { |
| 16 | if (i >= s.length) { process.exit(0); return; } |
| 17 | process.stdout.write(Buffer.from([s[i++]])); |
| 18 | setTimeout(next, 1); |
| 19 | })(); |
| 20 | `; |
| 21 | |
| 22 | function makeNodeDef(code: string): AgentDef { |
| 23 | return { |
| 24 | id: 'test-echo', |
| 25 | name: 'test-echo', |
| 26 | bin: process.execPath, // node |
| 27 | versionArgs: ['--version'], |
| 28 | buildArgs: () => ['-e', code], |
| 29 | streamFormat: 'plain', |
| 30 | }; |
| 31 | } |
| 32 | |
| 33 | test('CJK split across stdout chunks is not corrupted', async () => { |
| 34 | let collected = ''; |
| 35 | const handle = spawnAgent({ |
| 36 | def: makeNodeDef(BYTE_AT_A_TIME), |
| 37 | prompt: '', |
| 38 | context: { cwd: process.cwd() }, |
| 39 | onEvent: (ev) => { |
| 40 | if (ev.type === 'text') collected += ev.chunk; |
| 41 | }, |
| 42 | }); |
| 43 | const { exitCode } = await handle.done; |
| 44 | assert.equal(exitCode, 0); |
| 45 | assert.equal(collected, '设计引擎：每次使用都是一次进化。'); |
| 46 | assert.ok(!collected.includes('�'), 'must contain no U+FFFD replacement chars'); |
| 47 | }); |
| 48 |