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|
'use strict'
const { kClients } = require('../core/symbols')
const Agent = require('../agent')
const {
kAgent,
kMockAgentSet,
kMockAgentGet,
kDispatches,
kIsMockActive,
kNetConnect,
kGetNetConnect,
kOptions,
kFactory
} = require('./mock-symbols')
const MockClient = require('./mock-client')
const MockPool = require('./mock-pool')
const { matchValue, buildMockOptions } = require('./mock-utils')
const { InvalidArgumentError, UndiciError } = require('../core/errors')
const Dispatcher = require('../dispatcher')
const Pluralizer = require('./pluralizer')
const PendingInterceptorsFormatter = require('./pending-interceptors-formatter')
class FakeWeakRef {
constructor (value) {
this.value = value
}
deref () {
return this.value
}
}
class MockAgent extends Dispatcher {
constructor (opts) {
super(opts)
this[kNetConnect] = true
this[kIsMockActive] = true
// Instantiate Agent and encapsulate
if ((opts && opts.agent && typeof opts.agent.dispatch !== 'function')) {
throw new InvalidArgumentError('Argument opts.agent must implement Agent')
}
const agent = opts && opts.agent ? opts.agent : new Agent(opts)
this[kAgent] = agent
this[kClients] = agent[kClients]
this[kOptions] = buildMockOptions(opts)
}
get (origin) {
let dispatcher = this[kMockAgentGet](origin)
if (!dispatcher) {
dispatcher = this[kFactory](origin)
this[kMockAgentSet](origin, dispatcher)
}
return dispatcher
}
dispatch (opts, handler) {
// Call MockAgent.get to perform additional setup before dispatching as normal
this.get(opts.origin)
return this[kAgent].dispatch(opts, handler)
}
async close () {
await this[kAgent].close()
this[kClients].clear()
}
deactivate () {
this[kIsMockActive] = false
}
activate () {
this[kIsMockActive] = true
}
enableNetConnect (matcher) {
if (typeof matcher === 'string' || typeof matcher === 'function' || matcher instanceof RegExp) {
if (Array.isArray(this[kNetConnect])) {
this[kNetConnect].push(matcher)
} else {
this[kNetConnect] = [matcher]
}
} else if (typeof matcher === 'undefined') {
this[kNetConnect] = true
} else {
throw new InvalidArgumentError('Unsupported matcher. Must be one of String|Function|RegExp.')
}
}
disableNetConnect () {
this[kNetConnect] = false
}
// This is required to bypass issues caused by using global symbols - see:
// https://github.com/nodejs/undici/issues/1447
get isMockActive () {
return this[kIsMockActive]
}
[kMockAgentSet] (origin, dispatcher) {
this[kClients].set(origin, new FakeWeakRef(dispatcher))
}
[kFactory] (origin) {
const mockOptions = Object.assign({ agent: this }, this[kOptions])
return this[kOptions] && this[kOptions].connections === 1
? new MockClient(origin, mockOptions)
: new MockPool(origin, mockOptions)
}
[kMockAgentGet] (origin) {
// First check if we can immediately find it
const ref = this[kClients].get(origin)
if (ref) {
return ref.deref()
}
// If the origin is not a string create a dummy parent pool and return to user
if (typeof origin !== 'string') {
const dispatcher = this[kFactory]('http://localhost:9999')
this[kMockAgentSet](origin, dispatcher)
return dispatcher
}
// If we match, create a pool and assign the same dispatches
for (const [keyMatcher, nonExplicitRef] of Array.from(this[kClients])) {
const nonExplicitDispatcher = nonExplicitRef.deref()
if (nonExplicitDispatcher && typeof keyMatcher !== 'string' && matchValue(keyMatcher, origin)) {
const dispatcher = this[kFactory](origin)
this[kMockAgentSet](origin, dispatcher)
dispatcher[kDispatches] = nonExplicitDispatcher[kDispatches]
return dispatcher
}
}
}
[kGetNetConnect] () {
return this[kNetConnect]
}
pendingInterceptors () {
const mockAgentClients = this[kClients]
return Array.from(mockAgentClients.entries())
.flatMap(([origin, scope]) => scope.deref()[kDispatches].map(dispatch => ({ ...dispatch, origin })))
.filter(({ pending }) => pending)
}
assertNoPendingInterceptors ({ pendingInterceptorsFormatter = new PendingInterceptorsFormatter() } = {}) {
const pending = this.pendingInterceptors()
if (pending.length === 0) {
return
}
const pluralizer = new Pluralizer('interceptor', 'interceptors').pluralize(pending.length)
throw new UndiciError(`
${pluralizer.count} ${pluralizer.noun} ${pluralizer.is} pending:
${pendingInterceptorsFormatter.format(pending)}
`.trim())
}
}
module.exports = MockAgent
|
