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test_nock_lifecycle.js
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test_nock_lifecycle.js
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'use strict'
const http = require('http')
const { expect } = require('chai')
const nock = require('../..')
const sinon = require('sinon')
const assertRejects = require('assert-rejects')
const got = require('./got_client')
const servers = require('../servers')
describe('Nock lifecycle functions', () => {
describe('`activate()`', () => {
it('double activation throws exception', () => {
nock.restore()
expect(nock.isActive()).to.be.false()
nock.activate()
expect(nock.isActive()).to.be.true()
expect(() => nock.activate()).to.throw(Error, 'Nock already active')
expect(nock.isActive()).to.be.true()
})
it('(re-)activate after restore', async () => {
const onResponse = sinon.spy()
const { origin } = await servers.startHttpServer((request, response) => {
onResponse()
if (request.url === '/') {
response.writeHead(200)
response.write('server served a response')
}
response.end()
})
const scope = nock(origin).get('/').reply(304, 'served from our mock')
nock.restore()
expect(nock.isActive()).to.be.false()
expect(await got(origin)).to.include({ statusCode: 200 })
expect(scope.isDone()).to.be.false()
nock.activate()
expect(nock.isActive()).to.be.true()
expect(await got(origin)).to.include({ statusCode: 304 })
expect(scope.isDone()).to.be.true()
expect(onResponse).to.have.been.calledOnce()
})
})
describe('`cleanAll()`', () => {
it('removes a half-consumed mock', async () => {
nock('http://example.test').get('/').twice().reply()
await got('http://example.test/')
nock.cleanAll()
await assertRejects(got('http://example.test/'), err => {
expect(err).to.include({ name: 'RequestError', code: 'ENOTFOUND' })
return true
})
})
it('removes pending mocks from all scopes', () => {
const scope1 = nock('http://example.test')
.get('/somepath')
.reply(200, 'hey')
expect(scope1.pendingMocks()).to.deep.equal([
'GET http://example.test:80/somepath',
])
const scope2 = nock('http://example.test')
.get('/somepath')
.reply(200, 'hey')
expect(scope2.pendingMocks()).to.deep.equal([
'GET http://example.test:80/somepath',
])
nock.cleanAll()
expect(scope1.pendingMocks()).to.be.empty()
expect(scope2.pendingMocks()).to.be.empty()
})
it('removes persistent mocks', async () => {
nock('http://example.test').persist().get('/').reply()
nock.cleanAll()
await assertRejects(got('http://example.test/'), err => {
expect(err).to.include({
name: 'RequestError',
code: 'ENOTFOUND',
})
return true
})
})
it('should be safe to call in the middle of a request', done => {
// This covers a race-condition where cleanAll() is called while a request
// is in mid-flight. The request itself should continue to process normally.
// Notably, `cleanAll` is being called before the Interceptor is marked as
// consumed and removed from the global map. Having this test wait until the
// response event means we verify it didn't throw an error when attempting
// to remove an Interceptor that doesn't exist in the global map `allInterceptors`.
nock('http://example.test').get('/').reply()
const req = http.request('http://example.test', () => {
done()
})
req.once('socket', () => {
nock.cleanAll()
})
req.end()
})
})
describe('`isDone()`', () => {
it('returns false while a mock is pending, and true after it is consumed', async () => {
const scope = nock('http://example.test').get('/').reply()
expect(nock.isDone()).to.be.false()
await got('http://example.test/')
expect(nock.isDone()).to.be.true()
scope.done()
})
})
describe('`pendingMocks()`', () => {
it('returns the expected array while a mock is pending, and an empty array after it is consumed', async () => {
nock('http://example.test').get('/').reply()
expect(nock.pendingMocks()).to.deep.equal(['GET http://example.test:80/'])
await got('http://example.test/')
expect(nock.pendingMocks()).to.be.empty()
})
})
describe('`activeMocks()`', () => {
it('returns the expected array for incomplete mocks', () => {
nock('http://example.test').get('/').reply(200)
expect(nock.activeMocks()).to.deep.equal(['GET http://example.test:80/'])
})
it("activeMocks doesn't return completed mocks", async () => {
nock('http://example.test').get('/').reply()
await got('http://example.test/')
expect(nock.activeMocks()).to.be.empty()
})
it("activeMocks doesn't return duplicate mocks", () => {
nock('http://example.test')
.get('/')
.reply()
.get('/second')
.reply()
.get('/third')
.reply()
expect(nock.activeMocks()).to.deep.equal([
'GET http://example.test:80/',
'GET http://example.test:80/second',
'GET http://example.test:80/third',
])
})
})
describe('resetting nock catastrophically while a request is in progress', () => {
it('is handled gracefully', async () => {
// While invoking cleanAll() from a nock request handler isn't very
// realistic, it's possible that user code under test could crash, causing
// before or after hooks to fire, which invoke `nock.cleanAll()`. A little
// extreme, though if this does happen, we may as well be graceful about it.
function somethingBad() {
nock.cleanAll()
}
const responseBody = 'hi'
const scope = nock('http://example.test')
.get('/somepath')
.reply(200, (uri, requestBody) => {
somethingBad()
return responseBody
})
const { body } = await got('http://example.test/somepath')
expect(body).to.equal(responseBody)
scope.done()
})
})
describe('`abortPendingRequests()`', () => {
it('prevents the request from completing', done => {
const onRequest = sinon.spy()
nock('http://example.test').get('/').delayConnection(100).reply(200, 'OK')
http.get('http://example.test', onRequest)
setTimeout(() => {
expect(onRequest).not.to.have.been.called()
done()
}, 200)
process.nextTick(nock.abortPendingRequests)
})
})
})