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smoke.test.js
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smoke.test.js
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/* global it afterEach expect */
import puppeteer from 'puppeteer'
import ms from 'milliseconds'
// Which deployment to run the tests against
const appUrl = process.env.URL || 'http://localhost:3000'
const debug = process.env.DEBUG === 'true'
console.log('Testing', appUrl)
// puppeteer.launch opts
// see: https://github.com/GoogleChrome/puppeteer/blob/v1.3.0/docs/api.md#puppeteerlaunchoptions
const headless = !debug
const slowMo = debug ? 100 : undefined
const noSandbox = process.env.NO_SANDBOX === 'true'
const args = noSandbox ? ['--no-sandbox'] : undefined
// track browser instances so we can close them all after the test.
let browsers = []
async function createBrowser () {
const browser = await puppeteer.launch({headless, slowMo, args})
browsers.push(browser)
return browser
}
afterEach(() => {
browsers.forEach(b => b.close())
})
it('creates a pad', async () => {
const page = await createPage()
// Catch any errors
const errors = []
page.on('error', err => errors.push(err.message)) // Emitted when the page crashes.
page.on('pageerror', err => errors.push(err.message)) // Emitted when an uncaught exception happens within the page.
page.on('requestfailed', req => {
errors.push(`${req.failure().errorText} ${req.url()}`)
})
page.on('response', res => {
if (res.status() >= 400) {
errors.push(`${res.status()} ${res.url()}`)
}
})
// Create a pad and wait for IPFS to init.
await createNewPad(page)
const peerId = await waitForPeerId(page)
console.log('peerId', peerId)
expect(peerId).toBeTruthy()
expect(peerId.length).toBeGreaterThan(10)
errors.forEach(err => console.log(err))
expect(errors.length).toBe(0)
}, ms.minutes(3))
it('synchronises two pads via IPFS', async () => {
const docTitleSelector = '[data-id=document-title-input]'
const alf = await createPage()
await createNewPad(alf)
const alfPeerId = await waitForPeerId(alf)
console.log('alf peerId', alfPeerId)
expect(alfPeerId).toBeTruthy()
const alfTitle = 'I R ROBOT'
await alf.type(docTitleSelector, alfTitle)
const padUrl = alf.url()
console.log('pad url', padUrl)
const bob = await createPage()
await bob.goto(padUrl)
const bobPeerId = await waitForPeerId(bob)
expect(bobPeerId).toBeTruthy()
expect(bobPeerId).not.toEqual(alfPeerId)
console.log('bob peerId', bobPeerId)
// Wait for bob's doc title to match alf's
const bobTitleRef = await bob.$(docTitleSelector)
const valueMatches = (input, expected) => input.value === expected
// waitFor fn is executed in the browser context, so context has to passed as args.
await bob.waitFor(valueMatches, {/* opts */}, bobTitleRef, alfTitle)
}, ms.minutes(6)) // spinning up 2 browsers and syncing pads can take a while.
async function createPage () {
const browser = await createBrowser()
const page = await browser.newPage()
// See: https://github.com/GoogleChrome/puppeteer/issues/1183#issuecomment-383722137
await page._client.send('Emulation.clearDeviceMetricsOverride')
return page
}
async function createNewPad (page) {
await page.goto(appUrl)
await page.waitForSelector('[data-id=start-button]')
await page.click('[data-id=start-button]')
// wait for IPFS to boot
await page.waitForSelector('[data-id=ipfs-status][data-value=online]', {timeout: ms.minutes(2)})
}
async function waitForPeerId (page) {
// wait for IPFS to boot
await page.waitForSelector('[data-peer-id]', {timeout: ms.minutes(2)})
const peersButton = await page.$('[data-peer-id]')
const peerId = await page.evaluate(el => el.dataset.peerId, peersButton)
return peerId
}