stub.callsArgAsync(index)

Causes the stub to call the argument at the provided index as a callback function, asynchronously.

<<< ../../../.vitepress/tests/docs/stubs/api/calls-arg-async.test.js

Errors

When the argument at the provided index is undefined, or not a function, an Error will be thrown.

See also

• stub.callsArg
• stub.callsArgOn
• stub.callsArgOnAsync
• stub.callsArgOnWith
• stub.callsArgOnWithAsync
• stub.callsArgWith
• stub.callsArgWithAsync

More information

• https://nodejs.org/en/learn/asynchronous-work/event-loop-timers-and-nexttick
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/EventLoop
• https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setTimeout
• YouTube: "JavaScript Visualized - Event Loop, Web APIs, (Micro)task Queue" by Lydia Hallie
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this