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Fix AbortSignal cancellation for delayed MockAgent responses #4714

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Fix AbortSignal cancellation for delayed MockAgent responses #4714

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20 changes: 18 additions & 2 deletions lib/mock/mock-utils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -313,12 +313,28 @@ function mockDispatch (opts, handler) {
}

// Handle the request with a delay if necessary
const signal = opts.signal

if (typeof delay === 'number' && delay > 0) {
setTimeout(() => {
const timeout = setTimeout(() => {
if (signal?.aborted) return
handleReply(this[kDispatches])
}, delay)

if (signal) {
if (signal.aborted) {
clearTimeout(timeout)
return true
}

signal.addEventListener('abort', () => {
clearTimeout(timeout)
}, { once: true })
}
} else {
handleReply(this[kDispatches])
if (!signal?.aborted) {
handleReply(this[kDispatches])
}
}

function handleReply (mockDispatches, _data = data) {
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