Testrunner Configuration

The configuration file contains all necessary information to run your test suite. It’s just a NodeJS module that exports a JSON.

Here is an example configuration with all supported properties and additional information:

exports.config = {
// ==================================
// Where should your test be launched
// ==================================
//
runner: 'local',
//
// =====================
// Server Configurations
// =====================
// Host address of the running Selenium server. This information is usually obsolete, as
// WebdriverIO automatically connects to localhost. Also if you are using one of the
// supported cloud services like Sauce Labs, Browserstack, Testing Bot or LambdaTest, you also don't
// need to define host and port information (because WebdriverIO can figure that out
// from your user and key information). However, if you are using a private Selenium
// backend, you should define the `hostname`, `port`, and `path` here.
//
hostname: 'localhost',
port: 4444,
path: '/',
// Protocol: http | https
// protocol: 'http',
//
// =================
// Service Providers
// =================
// WebdriverIO supports Sauce Labs, Browserstack, Testing Bot and LambdaTest. (Other cloud providers
// should work, too.) These services define specific `user` and `key` (or access key)
// values you must put here, in order to connect to these services.
//
user: 'webdriverio',
key: 'xxxxxxxxxxxxxxxx-xxxxxx-xxxxx-xxxxxxxxx',
// If you run your tests on Sauce Labs you can specify the region you want to run your tests
// in via the `region` property. Available short handles for regions are `us` (default) and `eu`.
// These regions are used for the Sauce Labs VM cloud and the Sauce Labs Real Device Cloud.
// If you don't provide the region, it defaults to `us`.
region: 'us',
//
// Sauce Labs provides a [headless offering](https://saucelabs.com/products/web-testing/sauce-headless-testing)
// that allows you to run Chrome and Firefox tests headless.
//
headless: false
//
// ==================
// Specify Test Files
// ==================
// Define which test specs should run. The pattern is relative to the directory
// from which `wdio` was called.
//
// If you are calling `wdio` from an NPM script (see https://docs.npmjs.com/cli/run-script),
// then the current working directory is where your `package.json` resides, so `wdio`
// will be called from there.
//
specs: [
'test/spec/**'
],
// Patterns to exclude.
exclude: [
'test/spec/multibrowser/**',
'test/spec/mobile/**'
],
//
// ============
// Capabilities
// ============
// Define your capabilities here. WebdriverIO can run multiple capabilities at the same
// time. Depending on the number of capabilities, WebdriverIO launches several test
// sessions. Within your `capabilities`, you can overwrite the `spec` and `exclude`
// options in order to group specific specs to a specific capability.
//
// First, you can define how many instances should be started at the same time. Let's
// say you have 3 different capabilities (Chrome, Firefox, and Safari) and you have
// set `maxInstances` to 1. wdio will spawn 3 processes.
//
// Therefore, if you have 10 spec files and you set `maxInstances` to 10, all spec files
// will be tested at the same time and 30 processes will be spawned.
//
// The property basically handles how many capabilities from the same test should run tests.
//
maxInstances: 10,
//
// Or set a limit to run tests with a specific capability.
maxInstancesPerCapability: 10,
//
// If you have trouble getting all important capabilities together, check out the
// Sauce Labs platform configurator - a great tool to configure your capabilities:
// https://docs.saucelabs.com/reference/platforms-configurator
//
capabilities: [{
browserName: 'chrome',
'goog:chromeOptions': {
// to run chrome headless the following flags are required
// (see https://developers.google.com/web/updates/2017/04/headless-chrome)
// args: ['--headless', '--disable-gpu'],
}
//
// Parameter to ignore some or all default flags
// - if value is true: ignore all DevTools 'default flags' and Puppeteer 'default arguments'
// - if value is an array: DevTools filters given default arguments
// 'wdio:devtoolsOptions': {
// ignoreDefaultArgs: true,
// ignoreDefaultArgs: ['--disable-sync', '--disable-extensions'],
// }
}, {
// maxInstances can get overwritten per capability. So if you have an in house Selenium
// grid with only 5 firefox instance available you can make sure that not more than
// 5 instance gets started at a time.
maxInstances: 5,
browserName: 'firefox',
specs: [
'test/ffOnly/*'
],
'moz:firefoxOptions': {
// flag to activate Firefox headless mode (see https://github.com/mozilla/geckodriver/blob/master/README.md#firefox-capabilities for more details about moz:firefoxOptions)
// args: ['-headless']
},
// If outputDir is provided WebdriverIO can capture driver session logs
// it is possible to configure which logTypes to exclude.
// excludeDriverLogs: ['*'], // pass '*' to exclude all driver session logs
excludeDriverLogs: ['bugreport', 'server'],
//
// Parameter to ignore some or all Puppeteer default arguments
// ignoreDefaultArgs: ['-foreground'], // set value to true to ignore all default arguments
}],
//
// Additional list of node arguments to use when starting child processes
execArgv: [],
//
// ===================
// Test Configurations
// ===================
// Define all options that are relevant for the WebdriverIO instance here
//
// Level of logging verbosity: trace | debug | info | warn | error | silent
logLevel: 'info',
//
// Set specific log levels per logger
// use 'silent' level to disable logger
logLevels: {
webdriver: 'info',
'@wdio/applitools-service': 'info'
},
//
// Set directory to store all logs into
outputDir: __dirname,
//
// If you only want to run your tests until a specific amount of tests have failed use
// bail (default is 0 - don't bail, run all tests).
bail: 0,
//
// Set a base URL in order to shorten `url()` command calls. If your `url` parameter starts
// with `/`, the `baseUrl` is prepended, not including the path portion of `baseUrl`.
//
// If your `url` parameter starts without a scheme or `/` (like `some/path`), the `baseUrl`
// gets prepended directly.
baseUrl: 'http://localhost:8080',
//
// Default timeout for all waitForXXX commands.
waitforTimeout: 1000,
//
// Add files to watch (e.g. application code or page objects) when running `wdio` command
// with `--watch` flag. Globbing is supported.
filesToWatch: [
// e.g. rerun tests if I change my application code
// './app/**/*.js'
],
//
// Framework you want to run your specs with.
// The following are supported: 'mocha', 'jasmine', and 'cucumber'
// See also: https://webdriver.io/docs/frameworks.html
//
// Make sure you have the wdio adapter package for the specific framework installed before running any tests.
framework: 'mocha',
//
// The number of times to retry the entire specfile when it fails as a whole
specFileRetries: 1,
// Delay in seconds between the spec file retry attempts
specFileRetriesDelay: 0,
// Whether or not retried specfiles should be retried immediately or deferred to the end of the queue
specFileRetriesDeferred: false,
//
// Test reporter for stdout.
// The only one supported by default is 'dot'
// See also: https://webdriver.io/docs/dot-reporter.html , and click on "Reporters" in left column
reporters: [
'dot',
['allure', {
//
// If you are using the "allure" reporter you should define the directory where
// WebdriverIO should save all allure reports.
outputDir: './'
}]
],
//
// Options to be passed to Mocha.
// See the full list at: http://mochajs.org
mochaOpts: {
ui: 'bdd'
},
//
// Options to be passed to Jasmine.
// See also: https://github.com/webdriverio/webdriverio/tree/main/packages/wdio-jasmine-framework#jasmineopts-options
jasmineOpts: {
//
// Jasmine default timeout
defaultTimeoutInterval: 5000,
//
// The Jasmine framework allows it to intercept each assertion in order to log the state of the application
// or website depending on the result. For example, it is pretty handy to take a screenshot every time
// an assertion fails.
expectationResultHandler: function(passed, assertion) {
// do something
},
//
// Make use of Jasmine-specific grep functionality
grep: null,
invertGrep: null
},
//
// If you are using Cucumber you need to specify where your step definitions are located.
// See also: https://github.com/webdriverio/webdriverio/tree/main/packages/wdio-cucumber-framework#cucumberopts-options
cucumberOpts: {
require: [], // <string[]> (file/dir) require files before executing features
backtrace: false, // <boolean> show full backtrace for errors
compiler: [], // <string[]> ("extension:module") require files with the given EXTENSION after requiring MODULE (repeatable)
dryRun: false, // <boolean> invoke formatters without executing steps
failFast: false, // <boolean> abort the run on first failure
format: ['pretty'], // <string[]> (type[:path]) specify the output format, optionally supply PATH to redirect formatter output (repeatable)
snippets: true, // <boolean> hide step definition snippets for pending steps
source: true, // <boolean> hide source URIs
profile: [], // <string[]> (name) specify the profile to use
strict: false, // <boolean> fail if there are any undefined or pending steps
tagExpression: '', // <string> (expression) only execute the features or scenarios with tags matching the expression
timeout: 20000, // <number> timeout for step definitions
ignoreUndefinedDefinitions: false, // <boolean> Enable this config to treat undefined definitions as warnings.
scenarioLevelReporter: false // Enable this to make webdriver.io behave as if scenarios and not steps were the tests.
},
// For convenience, if ts-node or @babel/register modules are detected
// they are automatically loaded for config parsing so that TypeScript and
// future ES features can be used in wdio configs, and are also
// automatically loaded for test running so that tests can be written
// using TypeScript and future ES features.
// Because this may not be ideal in every situation, the following options
// may be used to customize the loading for test running, incase it has
// other requirements.
autoCompileOpts: {
//
// To disable auto-loading entirely set this to false.
autoCompile: true, // <boolean> Disable this to turn off autoloading. Note: When disabling, you will need to handle calling any such libraries yourself.
//
// If you have ts-node installed, you can customize how options are passed to it here:
// Any valid ts-node config option is allowed. Alternatively the ENV Vars could also be used instead of this.
// See also: https://github.com/TypeStrong/ts-node#cli-and-programmatic-options
// See also RegisterOptions in https://github.com/TypeStrong/ts-node/blob/master/src/index.ts
tsNodeOpts: {
transpileOnly: true,
project: 'tsconfig.json'
},
//
// If @babel/register is installed, you can customize how options are passed to it here:
// Any valid @babel/register config option is allowed.
// https://babeljs.io/docs/en/babel-register#specifying-options
babelOpts: {
ignore: []
},
},
//
// =====
// Hooks
// =====
// WebdriverIO provides a several hooks you can use to interfere the test process in order to enhance
// it and build services around it. You can either apply a single function to it or an array of
// methods. If one of them returns with a promise, WebdriverIO will wait until that promise is
// resolved to continue.
//
/**
* Gets executed once before all workers get launched.
* @param {Object} config wdio configuration object
* @param {Array.<Object>} capabilities list of capabilities details
*/
onPrepare: function (config, capabilities) {
},
/**
* Gets executed before a worker process is spawned and can be used to initialize specific service
* for that worker as well as modify runtime environments in an async fashion.
* @param {String} cid capability id (e.g 0-0)
* @param {[type]} caps object containing capabilities for session that will be spawn in the worker
* @param {[type]} specs specs to be run in the worker process
* @param {[type]} args object that will be merged with the main configuration once worker is initialized
* @param {[type]} execArgv list of string arguments passed to the worker process
*/
onWorkerStart: function (cid, caps, specs, args, execArgv) {
},
/**
* Gets executed just before initializing the webdriver session and test framework. It allows you
* to manipulate configurations depending on the capability or spec.
* @param {Object} config wdio configuration object
* @param {Array.<Object>} capabilities list of capabilities details
* @param {Array.<String>} specs List of spec file paths that are to be run
*/
beforeSession: function (config, capabilities, specs) {
},
/**
* Gets executed before test execution begins. At this point you can access to all global
* variables like `browser`. It is the perfect place to define custom commands.
* @param {Array.<Object>} capabilities list of capabilities details
* @param {Array.<String>} specs List of spec file paths that are to be run
* @param {Object} browser instance of created browser/device session
*/
before: function (capabilities, specs, browser) {
},
/**
* Gets executed before the suite starts.
* @param {Object} suite suite details
*/
beforeSuite: function (suite) {
},
/**
* This hook gets executed _before_ every hook within the suite starts.
* (For example, this runs before calling `before`, `beforeEach`, `after`, `afterEach` in Mocha.)
*
* (`stepData` and `world` are Cucumber-specific.)
*
*/
beforeHook: function (test, context/*, stepData, world*/) {
},
/**
* Hook that gets executed _after_ every hook within the suite ends.
* (For example, this runs after calling `before`, `beforeEach`, `after`, `afterEach` in Mocha.)
*
* (`stepData` and `world` are Cucumber-specific.)
*/
afterHook: function (test, context, { error, result, duration, passed, retries }/*, stepData, world*/) {
},
/**
* Function to be executed before a test (in Mocha/Jasmine) starts.
*/
beforeTest: function (test, context) {
},
/**
* Runs before a WebdriverIO command is executed.
* @param {String} commandName hook command name
* @param {Array} args arguments that the command would receive
*/
beforeCommand: function (commandName, args) {
},
/**
* Runs after a WebdriverIO command gets executed
* @param {String} commandName hook command name
* @param {Array} args arguments that command would receive
* @param {Number} result 0 - command success, 1 - command error
* @param {Object} error error object, if any
*/
afterCommand: function (commandName, args, result, error) {
},
/**
* Function to be executed after a test (in Mocha/Jasmine)
*/
afterTest: function (test, context, { error, result, duration, passed, retries }) {
},
/**
* Hook that gets executed after the suite has ended.
* @param {Object} suite suite details
*/
afterSuite: function (suite) {
},
/**
* Gets executed after all tests are done. You still have access to all global variables from
* the test.
* @param {Number} result 0 - test pass, 1 - test fail
* @param {Array.<Object>} capabilities list of capabilities details
* @param {Array.<String>} specs List of spec file paths that ran
*/
after: function (result, capabilities, specs) {
},
/**
* Gets executed right after terminating the webdriver session.
* @param {Object} config wdio configuration object
* @param {Array.<Object>} capabilities list of capabilities details
* @param {Array.<String>} specs List of spec file paths that ran
*/
afterSession: function (config, capabilities, specs) {
},
/**
* Gets executed after all workers have shut down and the process is about to exit.
* An error thrown in the `onComplete` hook will result in the test run failing.
* @param {Object} exitCode 0 - success, 1 - fail
* @param {Object} config wdio configuration object
* @param {Array.<Object>} capabilities list of capabilities details
* @param {<Object>} results object containing test results
*/
onComplete: function (exitCode, config, capabilities, results) {
},
/**
* Gets executed when a refresh happens.
* @param {String} oldSessionId session ID of the old session
* @param {String} newSessionId session ID of the new session
*/
onReload: function(oldSessionId, newSessionId) {
},
/**
* Cucumber Hooks
*
* Runs before a Cucumber Feature.
* @param uri path to feature file
* @param feature Cucumber feature object
*/
beforeFeature: function (uri, feature) {
},
/**
*
* Runs before a Cucumber Scenario.
* @param world world object containing information on pickle and test step
*/
beforeScenario: function (world) {
},
/**
*
* Runs before a Cucumber Step.
* @param step step data
* @param context Cucumber world
*/
beforeStep: function (step, context) {
},
/**
*
* Runs after a Cucumber Step.
* @param step step data
* @param context Cucumber world
*/
afterStep: function (step, context) {
},
/**
*
* Runs before a Cucumber Scenario.
* @param world world object containing information on pickle and test step
*/
afterScenario: function (world) {
},
/**
*
* Runs after a Cucumber Feature.
* @param uri path to feature file
* @param feature Cucumber feature object
*/
afterFeature: function (uri, feature) {
}
}

You can also find a file with all possible options and variations in the example folder.