Is it possible to add a delay for a specific response?

[freearhey]

I mean something like this:

mock.onPost('/any').reply(201, null, { delay: 2000 })

[ctimmerm]

Since you can reply with a promise, you can use that in combination with setTimeout to have per-request delays:

mock.onGet('/any').reply(function(config) {
  return new Promise(function(resolve, reject) {
    setTimeout(function() {
        resolve([201, null]);
    }, 2000);
  });
});

If it's something you need to do often, you could write a helper function for it:

const withDelay = (delay, response) => config => {
  return new Promise(function(resolve, reject) {
    setTimeout(function() {
        resolve(response);
    }, delay);
  });
});

// And then use it:
mock.onGet('/any').reply(withDelay(2000, [201, null]));

[freearhey]

@ctimmerm Thanks for the tip! But don't you think it would be better to add this option to the adapter itself?

[iomariani]

It would definitely be nice if we could do something like this:

mock.onGet('/any').delay(1000).reply((config) => {
  return [200];
});

So we don't have to wrap the entire response function with a Promise...

[prashanth-92]

@ctimmerm An attempt for a helper function for the delay: https://github.com/ctimmerm/axios-mock-adapter/pull/312 Thoughts?

[seriouslag]

I opened a PR to add types to replyWithDelay

#383