text: import { providerAsMiddleware } from 'eth-json-rpc-middleware'
  import GanacheCore from 'ganache-core'
  import { createScaffoldMiddleware, JsonRpcEngine } from 'json-rpc-engine'
  
  export function getTestSeed() {
    return 'people carpet cluster attract ankle motor ozone mass dove original primary mask'
  }
  
  export function getTestAccounts() {
    return [
      {
        address: '0x88bb7F89eB5e5b30D3e15a57C68DBe03C6aCCB21',
        key: Buffer.from('254A8D551474F35CCC816388B4ED4D20B945C96B7EB857A68064CB9E9FB2C092', 'hex'),
      },
      {
        address: '0x1fe9aAB565Be19629fF4e8541ca2102fb42D7724',
        key: Buffer.from('6BAB5A4F2A6911AF8EE2BD32C6C05F6643AC48EF6C939CDEAAAE6B1620805A9B', 'hex'),
      },
      {
        address: '0xbda5c89aa6bA1b352194291AD6822C92AbC87c7B',
        key: Buffer.from('9B11D7F833648F26CE94D544855558D7053ECD396E4F4563968C232C012879B0', 'hex'),
      },
    ]
  }
  
  export function createEngineForTestData() {
    return new JsonRpcEngine()
  }
  
  export function providerFromEngine(engine) {
    const provider = { sendAsync: engine.handle.bind(engine) }
    return provider
  }
  
  export function createTestProviderTools(options = {}) {
    const engine = createEngineForTestData()
    // handle provided hooks
    engine.push(createScaffoldMiddleware(options.scaffold || {}))
    // handle block tracker methods
    engine.push(
      providerAsMiddleware(
        GanacheCore.provider({
          mnemonic: getTestSeed(),
        })
      )
    )
    // wrap in standard provider interface
    const provider = providerFromEngine(engine)
    return { provider, engine }
  }
  