jest-snapshots-json-rest-api
v1.1.2
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Jest Snapshots serializer for JSON REST APIs
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jest-snapshots-json-rest-api
Jest Snapshots serializer for JSON REST APIs.
Install
yarn add --dev jest-snapshots-json-rest-api
Add the following to your Jest configuration in package.json
{
"jest": {
"snapshotSerializers": ["jest-snapshots-json-rest-api"]
}
}
or manually add the snapshot serializer to your test suite:
const serializer = require('jest-snapshots-json-rest-api')
// add the JSON REST API snapshot serializer
expect.addSnapshotSerializer(serializer)
Usage
The object you want to snapshot must match the following struct for the serializer to work:
{
status: 200,
body: {
hello: 'world'
}
}
Modules like supertest
work out-of-the-box. Also works with LightMyRequest
.
const app = require('./app')
const request = require('supertest')
test('get a user', async () => {
const response = await request(app)
.get('/users/')
expect(response.status).toBe(200)
expect(response.body.length).toBeGreaterThanOrEqual(3)
expect(response).toMatchSnapshot()
})
This will generate the corresponding .snap
file:
exports[`get a user 1`] = `{
"$schema": "http://json-schema.org/draft-04/schema#",
"properties": {
"created_at": {
"type": "string"
},
"email": {
"type": "string"
},
"first_name": {
"type": "null"
},
"full_name": {
"type": "string"
},
"id": {
"type": "string"
},
"last_name": {
"type": "null"
},
"status": {
"type": "string"
},
"updated_at": {
"type": "string"
}
},
"type": "object"
}
`;