error.js

const EasyGraphQLTester = require('easygraphql-tester')
const fs = require('fs')
const path = require('path')

const schemaCode = fs.readFileSync(path.join(__dirname, 'schema', 'schema.gql'), 'utf8')
const tester = new EasyGraphQLTester(schemaCode)

const getUserByUsername = `
  {
    getUserByUsername(username: 1, name: test) {
      email
    }
  }
`

tester.test(true, getUserByUsername) // Error: username argument is not type String