25 lines
1.3 KiB
TypeScript
25 lines
1.3 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { compressZstdFrame, decompressZstdFrame, scanZstdFrames } from '../src/zstd.ts'
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describe('JSONL Zstandard compatibility', () => {
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it('round-trips concatenated checksummed frames through the built-in Node API', async () => {
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const encoded = Buffer.concat([
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await compressZstdFrame('{"type":"session","version":0,"id":"compat","createdAt":1}\n'),
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await compressZstdFrame('{"type":"turn/start","seq":0,"turn":1}\n'),
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])
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const { frames, tornStart } = scanZstdFrames(encoded)
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expect(tornStart).toBeUndefined()
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expect(frames).toHaveLength(2)
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expect(frames.map(frame => encoded.subarray(frame.start, frame.start + 4).toString('hex')))
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.toEqual(['28b52ffd', '28b52ffd'])
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const decoded = await Promise.all(frames.map(frame => decompressZstdFrame(encoded.subarray(frame.start, frame.end))))
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expect(Buffer.concat(decoded).toString()).toContain('"type":"turn/start"')
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const eventFrame = encoded.subarray(frames[1]!.start, frames[1]!.end)
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const missingChecksumByte = eventFrame.subarray(0, -1)
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expect(scanZstdFrames(missingChecksumByte)).toEqual({ frames: [], tornStart: 0 })
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expect((await decompressZstdFrame(missingChecksumByte)).toString()).toContain('"type":"turn/start"')
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})
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})
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