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metamask-extension/test/e2e/webdriver/index.js
Mark Stacey 206920e9bd
Add 1 second pause at the beginning of each e2e test run (#7872)
There have been intermittent test failures at the beginning of various
e2e test runs. Most tests start with waiting for the 'Welcome' button
to be visible and enabled, which means waiting for the loading screen
to go away.

It looks like the reason the test intermittently fails is that
sometimes the loading screen doesn't appear until a few moments _after_
the page loads (or that it vanishes and comes back).

It was rather difficult to track down each possible cause for the
loading screens, so in the meantime a pause has been added at the start
of each run. This should hopefully suffice to ensure the momentary gap
in loading has been passed by the time the first test starts up.
2020-01-20 18:40:01 -04:00

73 lines
2.5 KiB
JavaScript

const { Browser } = require('selenium-webdriver')
const Driver = require('./driver')
const ChromeDriver = require('./chrome')
const FirefoxDriver = require('./firefox')
const fetchMockResponses = require('../../data/fetch-mocks.json')
async function buildWebDriver ({ responsive, port } = {}) {
const browser = process.env.SELENIUM_BROWSER
const extensionPath = `dist/${browser}`
const { driver: seleniumDriver, extensionId, extensionUrl } = await buildBrowserWebDriver(browser, { extensionPath, responsive, port })
setupFetchMocking(seleniumDriver)
const driver = new Driver(seleniumDriver, browser, extensionUrl)
await driver.navigate()
await driver.delay(1000)
return {
driver,
extensionId,
}
}
async function buildBrowserWebDriver (browser, webDriverOptions) {
switch (browser) {
case Browser.CHROME: {
return await ChromeDriver.build(webDriverOptions)
}
case Browser.FIREFOX: {
return await FirefoxDriver.build(webDriverOptions)
}
default: {
throw new Error(`Unrecognized browser: ${browser}`)
}
}
}
async function setupFetchMocking (driver) {
// define fetchMocking script, to be evaluated in the browser
function fetchMocking (fetchMockResponses) {
window.origFetch = window.fetch.bind(window)
window.fetch = async (...args) => {
const url = args[0]
if (url === 'https://ethgasstation.info/json/ethgasAPI.json') {
return { json: async () => clone(fetchMockResponses.ethGasBasic) }
} else if (url === 'https://ethgasstation.info/json/predictTable.json') {
return { json: async () => clone(fetchMockResponses.ethGasPredictTable) }
} else if (url.match(/chromeextensionmm/)) {
return { json: async () => clone(fetchMockResponses.metametrics) }
}
return window.origFetch(...args)
}
if (window.chrome && window.chrome.webRequest) {
window.chrome.webRequest.onBeforeRequest.addListener(cancelInfuraRequest, { urls: ['https://*.infura.io/*'] }, ['blocking'])
}
function cancelInfuraRequest (requestDetails) {
console.log(`fetchMocking - Canceling request: "${requestDetails.url}"`)
return { cancel: true }
}
function clone (obj) {
return JSON.parse(JSON.stringify(obj))
}
}
// fetchMockResponses are parsed last minute to ensure that objects are uniquely instantiated
const fetchMockResponsesJson = JSON.stringify(fetchMockResponses)
// eval the fetchMocking script in the browser
await driver.executeScript(`(${fetchMocking})(${fetchMockResponsesJson})`)
}
module.exports = {
buildWebDriver,
}