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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">import { type ExecutionContext } from 'ava'
&nbsp;
import sinon from 'sinon'
&nbsp;
import childProcessModule, { ChildProcess } from 'node:child_process'
import EventEmitter from 'node:events'
&nbsp;
type FakeProcessBehaviour = (proc: FakeProcess) =&gt; void
&nbsp;
class FakeProcess extends EventEmitter {
stdout = new EventEmitter()
stderr = new EventEmitter()
&nbsp;
constructor(behaviour?: FakeProcessBehaviour) {
super()
&nbsp;
if (behaviour) {
setTimeout(() =&gt; behaviour(this), 0)
}
}
}
&nbsp;
export function stubSpawn(
t: ExecutionContext&lt;unknown&gt;,
behaviour?: FakeProcessBehaviour
) {
let spawnStub = sinon
.stub(childProcessModule, 'spawn')
.returns(new FakeProcess(behaviour) as ChildProcess)
&nbsp;
t.teardown(() =&gt; spawnStub.restore())
&nbsp;
return spawnStub
}
&nbsp;</pre></td></tr></table></pre>
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