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test(e2b): prove stale interrupt isolation

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This commit is contained in:
Tianyi Cui
2026-07-29 12:15:18 +08:00
parent c122d984c4
commit ca79f4364c
1 changed files with 27 additions and 3 deletions
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30
examples/headless-agent/tests/fixtures/e2b/e2b/bin.ts vendored
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@@ -252,14 +252,38 @@ try {
}
const staleInterrupt = ctx.pty.startSend(owner, terminal.sessionId, { text: 'sleep 0.2', submit: true })
if (!staleInterrupt.cancel()) throw new Error('E2B PTY refused the stale-interrupt probe cancellation')
await staleInterrupt.done
const sleeping = ctx.pty.startSend(owner, terminal.sessionId, { text: 'sleep 30', submit: true })
let canceledSendRetained = false
try {
ctx.pty.startSend(owner, terminal.sessionId, { text: 'sleep 30', submit: true })
} catch (error: unknown) {
canceledSendRetained = String(error).includes('active send')
}
foregroundLookup.resolve(undefined)
await staleInterrupt.done
remoteCommands.run = runRemoteCommand
if (!canceledSendRetained) throw new Error('E2B PTY released a canceled send before foreground signalling settled')
const sleeping = ctx.pty.startSend(owner, terminal.sessionId, {
text: "printf 'DSH_SLEEP_%s\\n' READY; sleep 30",
submit: true,
})
let sleepReadyOutput = ''
const sleepReadyDeadline = Date.now() + 5_000
while (!sleepReadyOutput.includes('DSH_SLEEP_READY\n')) {
sleepReadyOutput += sleeping.readOutput().delta
if (sleepReadyOutput.includes('DSH_SLEEP_READY\n')) break
const settled = await Promise.race([
sleeping.done.then(result => ({ result })),
new Promise<undefined>(resolveDelay => setTimeout(() => { resolveDelay(undefined) }, 25)),
])
if (settled !== undefined) {
throw new Error(`E2B PTY successor settled before executing: ${JSON.stringify(settled.result)}`)
}
if (Date.now() >= sleepReadyDeadline) throw new Error(`E2B PTY successor did not execute: ${sleepReadyOutput}`)
}
const interruptIdentitySafe = await Promise.race([
sleeping.done.then(() => false),
new Promise<true>(resolveDelay => setTimeout(() => { resolveDelay(true) }, 300)),
])
remoteCommands.run = runRemoteCommand
if (!delayedForegroundLookup || !interruptIdentitySafe) {
throw new Error('E2B PTY stale interrupt affected its successor send')
}