Mock graphql-ws for tests (with jest, react-native)

[atosh502]

I am trying to setup tests for a react native app that uses graphql-ws for subscriptions. However, I am unsure how can I achieve this? Any directions would be very helpful.

I think I need to mock the createClient method exported from graphql-ws but beyond that, I am clueless about how to do it.

import { createClient as createWSClient } from "graphql-ws";

The following error appears when I run yarn test

[enisdenjo]

Node does not have a WebSocket implementation in the global object, you must supply your own (which is what the error suggests). ws is often used for Node environment, see "Client usage in Node" recipe.

On how to test, I personally start a real server and connect to it as if it were any other. I dont mock requests because I want to test the whole transport and the library's behavior within. You can check my test suites under src/__tests__, they might give you a few pointers.

[atosh502]

thank you I'll definitely check out the src/tests directory...