Jest matcher feature request: something similar to .toMatchObject

[kheyse-werk]

It would be nice to be able to do .toReceiveMessage with behaviour similar to .toMatchObject .

My use case: I know what I expect the client to send, but each request contains an unknown/random id too.

[romgain]

Hi @kheyse-oqton !

That's a good idea :slightly_smiling_face:

Is that something you'd be willing to send a PR for? It could be a new .toReceiveMessageMatching matcher, that behaves like .toMatchObject when jsonProtocol is true, and does a substring or regex match otherwise.

[antoinetissier]

In the case of big/complex messages, the ability to use snapshots would be nice as well, either by chaining calls, or by providing toReceiveMessageMatchingSnapshot / toReceiveMessageMatchingInlineSnapshot.

[romgain]

Hi @antoinetissier !

You can already do this with

expect(await ws.nextMessage).toMatchSnapshot()

I don’t think it would be particularly useful to provide a wrapper around that.