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'
)