65 lines
1.5 KiB
TypeScript
65 lines
1.5 KiB
TypeScript
import { fork, ChildProcess } from 'child_process'
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class MockSmtpServer {
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private static instance: MockSmtpServer
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private started = false
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private emailChildProcess: ChildProcess
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private emails: object[]
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private constructor () {
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this.emailChildProcess = fork(`${__dirname}/email-child-process`, [])
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this.emailChildProcess.on('message', (msg) => {
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if (msg.email) {
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return this.emails.push(msg.email)
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}
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})
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process.on('exit', () => this.kill())
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}
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collectEmails (emailsCollection: object[]) {
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return new Promise((res, rej) => {
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if (this.started) {
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this.emails = emailsCollection
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return res()
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}
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// ensure maildev isn't started until
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// unexpected exit can be reported to test runner
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this.emailChildProcess.send({ start: true })
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this.emailChildProcess.on('exit', () => {
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return rej(new Error('maildev exited unexpectedly, confirm port not in use'))
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})
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this.emailChildProcess.on('message', (msg) => {
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if (msg.err) {
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return rej(new Error(msg.err))
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}
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this.started = true
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this.emails = emailsCollection
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return res()
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})
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})
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}
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kill () {
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if (!this.emailChildProcess) return
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process.kill(this.emailChildProcess.pid)
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this.emailChildProcess = null
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MockSmtpServer.instance = null
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}
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static get Instance () {
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return this.instance || (this.instance = new this())
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}
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}
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// ---------------------------------------------------------------------------
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export {
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MockSmtpServer
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}
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