Sometimes, we want to stub a promise with sinon and JavaScript.
In this article, we’ll look at how to stub a promise with sinon and JavaScript.
How to stub a promise with sinon and JavaScript?
To stub a promise with sinon and JavaScript, we can return a promise with a stub.
For instance, we write
import sinon from "sinon";
const sandbox = sinon.sandbox.create();
const promiseResolved = () =>
sandbox.stub().returns(Promise.resolve("resolved"));
const promiseRejected = () =>
sandbox.stub().returns(Promise.reject("rejected"));
to call sandbox.stub to return a stub.
And we make it return a promise by calling returns with a promise.
Promise.resolve returns a promise that resolves.
And Promise.reject returns a promise that rejects.
Conclusion
To stub a promise with sinon and JavaScript, we can return a promise with a stub.
