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import path from 'path'
import util from 'util'
import EventEmitter from 'events'
import logger from '@wdio/logger'
import { initialiseServices, initialisePlugin } from '@wdio/utils'
import { ConfigParser } from '@wdio/config'
import BaseReporter from './reporter'
import { runHook, initialiseInstance, filterLogTypes, getInstancesData, attachToMultiremote } from './utils'
const log = logger('@wdio/runner')
export default class Runner extends EventEmitter {
constructor () {
super()
this.configParser = new ConfigParser()
this.sigintWasCalled = false
}
/**
* run test suite
* @param {String} cid worker id (e.g. `0-0`)
* @param {Object} argv cli arguments passed into wdio command
* @param {String[]} specs list of spec files to run
* @param {Object} caps capabilities to run session with
* @param {String} configFile path to config file to get config from
* @param {Object} server modified WebDriver target
* @param {Number} retries number of retries remaining
* @return {Promise} resolves in number of failures for testrun
*/
async run ({ cid, argv, specs, caps, configFile, server, retries }) {
this.cid = cid
this.specs = specs
this.caps = caps
/**
* add config file
*/
try {
this.configParser.addConfigFile(configFile)
} catch (e) {
return this._shutdown(1)
}
/**
* merge cli arguments into config
*/
this.configParser.merge(argv)
/**
* merge host/port changes by service launcher into config
*/
this.configParser.merge(server)
this.config = this.configParser.getConfig()
logger.setLogLevelsConfig(this.config.logLevels, this.config.logLevel)
this.isMultiremote = !Array.isArray(this.configParser.getCapabilities())
initialiseServices(this.config, caps).map(::this.configParser.addService)
await runHook('beforeSession', this.config, this.caps, this.specs)
const browser = await this._initSession(this.config, this.caps)
this.reporter = new BaseReporter(this.config, this.cid, browser.capabilities)
this.inWatchMode = Boolean(this.config.watch)
/**
* return if session initialisation failed
*/
Iif (!browser) {
return this._shutdown(1)
}
const isMultiremote = Boolean(browser.isMultiremote)
/**
* kill session of SIGINT signal showed up while trying to
* get a session ID
*/
if (this.sigintWasCalled) {
log.info('SIGINT signal detected while starting session, shutting down...')
await this.endSession()
return this._shutdown(0)
}
/**
* initialise framework
*/
this.framework = initialisePlugin(this.config.framework, 'framework')
const instances = getInstancesData(browser, isMultiremote)
/**
* initialisation successful, send start message
*/
this.reporter.emit('runner:start', {
cid,
specs,
config: this.config,
isMultiremote,
sessionId: browser.sessionId,
capabilities: isMultiremote
? browser.instances.reduce((caps, browserName) => {
caps[browserName] = browser[browserName].capabilities
return caps
}, {})
: browser.capabilities,
retry: (this.config.specFileRetries || 0) - (retries || 0)
})
/**
* report sessionId and target connection information to worker
*/
const { protocol, hostname, port, path, queryParams } = browser.options
const { isW3C, sessionId } = browser
process.send({
origin: 'worker',
name: 'sessionStarted',
content: { sessionId, isW3C, protocol, hostname, port, path, queryParams, isMultiremote, instances }
})
/**
* kick off tests in framework
*/
let failures = 0
try {
failures = await this.framework.run(cid, this.config, specs, caps, this.reporter)
await this._fetchDriverLogs(this.config, caps.excludeDriverLogs)
} catch (e) {
log.error(e)
this.emit('error', e)
failures = 1
}
/**
* in watch mode we don't close the session and leave current page opened
*/
if (!argv.watch) {
await this.endSession()
}
this.reporter.emit('runner:end', {
failures,
cid: this.cid,
retries
})
return this._shutdown(failures)
}
/**
* init WebDriver session
* @param {object} config configuration of sessions
* @param {Object} caps desired cabilities of session
* @return {Promise} resolves with browser object or null if session couldn't get established
*/
async _initSession (config, caps) {
let browser = null
try {
browser = global.browser = global.driver = await initialiseInstance(config, caps, this.isMultiremote)
} catch (e) {
log.error(e)
this.emit('error', e)
return browser
}
browser.config = config
/**
* register global helper method to fetch elements
*/
global.$ = (selector) => browser.$(selector)
global.$$ = (selector) => browser.$$(selector)
/**
* register command event
*/
// console.log(this)
browser.on('command', (command) => this.reporter.emit(
'client:beforeCommand',
Object.assign(command, { sessionId: browser.sessionId })
))
/**
* register result event
*/
browser.on('result', (result) => this.reporter.emit(
'client:afterCommand',
Object.assign(result, { sessionId: browser.sessionId })
))
return browser
}
/**
* fetch logs provided by browser driver
*/
async _fetchDriverLogs (config, excludeDriverLogs) {
/**
* only fetch logs if
*/
if (
/**
* a log directory is given in config
*/
!config.outputDir ||
/**
* the session wasn't killed during start up phase
*/
!global.browser.sessionId ||
/**
* driver supports it
*/
typeof global.browser.getLogs === 'undefined'
) {
return
}
let logTypes
try {
logTypes = await global.browser.getLogTypes()
} catch (errIgnored) {
/**
* getLogTypes is not supported by browser
*/
return
}
logTypes = filterLogTypes(excludeDriverLogs, logTypes)
log.debug(`Fetching logs for ${logTypes.join(', ')}`)
return Promise.all(logTypes.map(async (logType) => {
let logs
try {
logs = await global.browser.getLogs(logType)
} catch (e) {
return log.warn(`Couldn't fetch logs for ${logType}: ${e.message}`)
}
/**
* don't write to file if no logs were captured
*/
if (logs.length === 0) {
return
}
const stringLogs = logs.map((log) => JSON.stringify(log)).join('\n')
return util.promisify(fs.writeFile)(
path.join(config.outputDir, `wdio-${this.cid}-${logType}.log`),
stringLogs,
'utf-8'
)
}))
}
/**
* kill worker session
*/
async _shutdown (failures) {
await this.reporter.waitForSync()
this.emit('exit', failures === 0 ? 0 : 1)
return failures
}
/**
* end WebDriver session, a config object can be applied if object has changed
* within a hook by the user
*/
async endSession (payload) {
/**
* Attach to browser session before killing it in Multiremote
*/
if (!global.browser && payload && payload.argv && payload.argv.watch) {
if (payload.argv.isMultiremote) {
this.isMultiremote = true
global.browser = await attachToMultiremote(payload.argv.instances, payload.argv.caps)
} else {
global.browser = await initialiseInstance(payload.argv.config, payload.argv.caps, false)
}
}
/**
* make sure instance(s) exist and have `sessionId`
*/
const hasSessionId = global.browser && (this.isMultiremote
/**
* every multiremote instance should exist and should have `sessionId`
*/
? !global.browser.instances.some(i => global.browser[i] && !global.browser[i].sessionId)
/**
* browser object should have `sessionId` in regular mode
*/
: global.browser.sessionId)
/**
* don't do anything if test framework returns after SIGINT
* if endSession is called without payload we expect a session id
*/
if (!payload && !hasSessionId) {
return
}
/**
* if payload was called but no session was created, wait until it was
* and try to end it
*/
if (payload && !hasSessionId) {
await new Promise((resolve) => setTimeout(resolve, 250))
return this.endSession(payload)
}
/**
* store capabilities for afterSession hook
*/
let capabilities = global.browser.capabilities || {}
if (this.isMultiremote) {
global.browser.instances.forEach(i => { capabilities[i] = global.browser[i].capabilities })
}
await global.browser.deleteSession()
/**
* delete session(s)
*/
if (this.isMultiremote) {
global.browser.instances.forEach(i => { delete global.browser[i].sessionId })
} else {
delete global.browser.sessionId
}
await runHook('afterSession', global.browser.config, capabilities, this.specs)
if (payload) {
return this._shutdown()
}
}
}
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