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test: wait for the first chunk before sending the second in the readable-stream test #418

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Merged
yusukebe merged 1 commit into from
Nov 2, 2026
Merged

test: wait for the first chunk before sending the second in the readable-stream test #418

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10 changes: 10 additions & 0 deletions test/server.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -186,6 +186,7 @@ describe('various response body types', () => {
const largeText = 'a'.repeat(1024 * 1024 * 10)
let server: ServerType
let resolveReadableStreamPromise: () => void
let resolveReadableStreamSecondChunkPromise: () => void
let resolveEventStreamPromise: () => void
let resolveEventStreamWithoutTransferEncodingPromise: () => void
beforeAll(() => {
Expand Down Expand Up @@ -223,11 +224,15 @@ describe('various response body types', () => {
const readableStreamPromise = new Promise<void>((resolve) => {
resolveReadableStreamPromise = resolve
})
const readableStreamSecondChunkPromise = new Promise<void>((resolve) => {
resolveReadableStreamSecondChunkPromise = resolve
})
app.get('/readable-stream', () => {
const stream = new ReadableStream({
async start(controller) {
await readableStreamPromise
controller.enqueue('Hello!')
await readableStreamSecondChunkPromise
controller.enqueue(' Node!')
controller.close()
},
Expand Down Expand Up @@ -376,6 +381,11 @@ describe('various response body types', () => {
expect(headers.get('transfer-encoding')).toBe('chunked')
resolveReadableStreamPromise()
},
onChunk: (_chunk, index) => {
if (index === 0) {
resolveReadableStreamSecondChunkPromise()
}
},
}
)
expect(res.status).toBe(200)
Expand Down
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