Edge Runtime Jest Expect
The @edge-runtime/jest-expect package comes with useful Jest matchers (opens in a new tab) to help testing Request and Response instances.
Installation
npm install @edge-runtime/jest-expectUsage
Add the following in your jest.config.js file:
// See https://jestjs.io/docs/configuration#setupfilesafterenv-array
setupFilesAfterEnv: ['@edge-runtime/jest-expect'],To include the TypeScript types, add the following in your tsconfig.json file:
// See https://www.typescriptlang.org/tsconfig#include
"include": [
"node_modules/@edge-runtime/jest-expect"
]API
.toHaveStatus
It checks for HTTP status code or message correctness:
const response = new Response('OK')
expect(response).toHaveStatus(200)
expect(response).toHaveStatus('Successful')
expect(response).not.toHaveStatus(201).toHaveJSONBody
It checks if an HTTP request/response body is a JSON:
const response = Response.json({ hello: 'world' })
expect(response).toHaveJSONBody({ hello: 'world' })
expect(response).not.toHaveJSONBody({ foo: 'baz' }).toHaveTextBody
It checks if an HTTP request/response body is a text:
const request = new Request('http://example.com', {
method: 'POST',
body: 'Hello World',
})
expect(request).toHaveTextBody('hello world')
expect(request).not.toHaveTextBody('foo bar')