v2
Features
Testing
⚠️
This is the documentation for the old GraphQL Yoga version 2. We recommend upgrading to the latest GraphQL Yoga version 5.

Migrate to GraphQL Yoga v5

Testing

GraphQL Yoga makes it easy to test your GraphQL API. It has built-in support for HTTP injection. You can use any testing framework of your choice.

Using inject

import { createServer } from '@graphql-yoga/common'
 
const yoga = createServer()
 
const { response, executionResult } = await yoga.inject({
  document: '{ greetings }'
})
 
console.assert(response.status === 200, 'Response status should be 200')
console.assert(
  executionResult.data.greetings ===
    'This is the `greetings` field of the root `Query` type',
  `Expected 'This is the \`greetings\` field of the root \`Query\` type' but got ${executionResult.data.greetings}`
)

Using fetch to Test Just Like Browsers on Any JS Environment

import { createServer } from '@graphql-yoga/common'
 
const yoga = createServer()
 
const response = await yoga.fetch('http://localhost:4000/graphql', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    query: '{ greetings }'
  })
})
 
console.assert(response.status === 200, 'Response status should be 200')
const executionResult = await response.json()
console.assert(
  executionResult.data.greetings ===
    'This is the `greetings` field of the root `Query` type',
  `Expected 'This is the \`greetings\` field of the root \`Query\` type' but got ${executionResult.data.greetings}`
)

Using supertest For Node.js

import { createServer } from '@graphql-yoga/node'
import request from 'supertest'
import { deepEqual } from 'node:assert'
 
const yoga = createServer()
 
const response = await request(yoga).post('/graphql').send({
  query: '{ greetings }'
})
 
deepEqual(response.status, 200)
deepEqual(
  response.body.data.greetings,
  'This is the `greetings` field of the root `Query` type'
)
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