How to mock connector with @wagmi/core v2

[giraffecrackers]

Versions:

"@wagmi/core": "^2.0.2",
"viem": "^2.0.5"

Wagmi config file:

import { createConfig, http, fallback, mock } from '@wagmi/core'
// import { mock } from '@wagmi/connectors'
// import { createClient, type Chain, custom } from 'viem'
import { polygonMumbai } from '@wagmi/core/chains'

export const web3Config = createConfig({
  multiInjectedProviderDiscovery: true,
  chains: [polygonMumbai],
  connectors: [
    mock({
      accounts: ['0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266'],
      features: { signMessageError: false }
    })
  ],
  transports: {
    [polygonMumbai.id]: fallback([http(), http('https://rpc-mumbai.maticvigil.com')])
  }
})

App.vue:

<script setup lang="ts">
import { connect, disconnect, signMessage, type Connector } from '@wagmi/core'
import { web3Config } from './web3/web3Config'

async function con(connector: Connector) {
  const { accounts, chainId } = await connect(web3Config, { connector })
  console.log(accounts, chainId)

  const signature = await signMessage(web3Config, { message: 'test' })
  console.log(signature)
}
</script>

<template>
  <div>
    <button
      v-for="connector in web3Config.connectors.filter((c) => c.type === 'mock')"
      :key="connector.id"
      @click="con(connector)"
    >
      login
    </button>
  </div>
</template>

Doc page: https://wagmi.sh/react/api/connectors/mock

Questions:

connection is successful but signMessage() causes following error

Uncaught (in promise) InvalidInputRpcError: Missing or invalid parameters.
Double check you have provided the correct parameters.

URL: https://rpc.ankr.com/polygon_mumbai
Request body: {"method":"eth_sign","params":["0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266","0x74657374"]}

Details: the method has been deprecated: eth_sign
Version: viem@2.0.5

At the same time network request to https://rpc.ankr.com/polygon_mumbai with following payload is triggered

{"jsonrpc":"2.0","id":0,"method":"eth_sign","params":["0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266","0x74657374"]}

• Why method mentioned in the error is eth_sign and not personal_sign?
• Isn't mocked connector meant to mock network requests as well?

Screenshot

Update

Looks like mock() isn't actually mocking request part.

Mock can be implemented with createConnector function.

[giraffecrackers]

Mock can be implemented with createConnector function.

createConnector((config) => ({
  // setup(){}, connect(){}, disconnect(){} ...
})