twicefunction.js

    let clients = {}
    before(function (done) {
      fc = new FactoryClient()
      fc.spawnNode((err, node) => {
        expect(err).to.not.exist
        if (err) done(err)
        clients.a = node
      })
      fc.spawnNode((err, node) => {
        expect(err).to.not.exist
        if (err) done(err)
        clients.b = node
      })
      const interval = setInterval(() => {
        if (Object.keys(clients).length === 2) {
          clearInterval(interval)
          done()
        }
      }, 100)
    })
```