Support `objectContaining` in `toHaveBeenFetchedWith`

[dalfageme]

✨ Feature proposal

Support objectContaining in toHaveBeenFetchedWith

🎯 Motivation

Improve test quality allowing to check only the relevant parts of the body

👀 Example

  expect('/demo/').toHaveBeenFetchedWith({
    method: 'POST',
    body: expect.objectContaining({ sample: "false" }),
  })

💬 Comments

[SalvaCarsi]

What do you think about having another configuration key called something like partialBody. Then we can move the logic of objectContaining inside of the validation of that configuration.

If we do that we should have some way of avoiding collisions between the body and partialBody configurations. This could be done by giving priority to body to partialBody for example.

[dalfageme]

If it's possible I would prefer to use expect.objectContaining which is native from jest instead of adding our own method