Configuration
If you create a WebdriverIO instance, you need to define some options in order to set the proper
capabilities and settings. When calling the remote method like:
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| var webdriverio = require('webdriverio');
var client = webdriverio.remote(options);
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you need to pass in an options object to define your Webdriver instance. Note that this is only necessary if you run WebdriverIO as a standalone package. If you are using the wdio test runner, these options belong in your wdio.conf.js configuration file. The following options can be defined:
desiredCapabilities
Defines the capabilities you want to run in your Selenium session. See the Selenium documentation
for a list of the available capabilities. Also useful is Sauce Labs Automated Test Configurator
that helps you to create this object by clicking together your desired capabilities.
Refer to the cloud service docs for further
service specific options.
Type: Object
Default: { browserName: 'firefox' }
Example:
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| browserName: 'chrome',
version: '27.0',
platform: 'XP',
tags: ['tag1','tag2'],
name: 'my test'
pageLoadStrategy: 'eager'
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Details:
pageLoadStrategy is implemented in Selenium 2.46.0, and apparently, it is only working on Firefox. The valid values are:
normal - waits for document.readyState to be ‘complete’. This value is used by default.
eager - will abort the wait when document.readyState is ‘interactive’ instead of waiting for ‘complete’.
none - will abort the wait immediately, without waiting for any of the page to load.
logLevel
Level of logging verbosity.
verbose: everything gets logged
silent: nothing gets logged
command: url to Selenium server gets logged (e.g. [15:28:00] COMMAND GET "/wd/hub/session/dddef9eb-82a9-4f6c-ab5e-e5934aecc32a/title")
data: payload of the request gets logged (e.g. [15:28:00] DATA {})
result: result from the Selenium server gets logged (e.g. [15:28:00] RESULT "Google")
Type: String
Default: silent
Options: verbose | silent | command | data | result
logOutput
Pipe WebdriverIO logs into a file. You can either define a directory, and WebdriverIO generates a filename for the log file
or you can pass in a writeable stream, and everything gets redirected to that (last one doesn’t work yet with the wdio runner).
Type: String|writeable stream
Default: null
protocol
Protocol to use when communicating with the Selenium standalone server (or driver).
Type: String
Default: http
host
Host of your WebDriver server.
Type: String
Default: 127.0.0.1
port
Port your WebDriver server is on.
Type: Number
Default: 4444
path
Path to WebDriver server.
Type: String
Default: /wd/hub
baseUrl
Shorten url command calls by setting a base url. If your url parameter starts with /, the base url gets prepended.
Type: String
Default: null
connectionRetryTimeout
Timeout for any request to the Selenium server
Type: Number
Default: 90000
connectionRetryCount
Count of request retries to the Selenium server
Type: Number
Default: 3
coloredLogs
Enables colors for log output
Type: Boolean
Default: true
bail
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).
Type: Number
Default: 0 (don’t bail, run all tests)
screenshotPath
Saves a screenshot to a given path if the Selenium driver crashes
Type: String|null
Default: null
screenshotOnReject
Attaches a screenshot of a current page to the error if the Selenium driver crashes.
Can be specified as object to set the timeout and count of retries on the attempt to take screenshot.
Type: Boolean|Object
Default: false
Note: Attaching screenshot to the error uses extra time to get screenshot and extra memory to store it. So for the sake of performance it is disabled by default.
Example:
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screenshotOnReject: true
screenshotOnReject: {
connectionRetryTimeout: 30000,
connectionRetryCount: 0
}
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waitforTimeout
Default timeout for all waitForXXX commands. Note the lowercase f.
Type: Number
Default: 1000
waitforInterval
Default interval for all waitForXXX commands.
Type: Number
Default: 500
queryParams
A key-value store of query parameters to be added to every selenium request.
Type: Object
Default: None
Example:
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| queryParams: {
specialKey: 'd2ViZHJpdmVyaW8='
}
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debug
Enables node debugging
Type: Boolean
Default: false
execArgv
Node arguments to specify when launching child processes
Type: Array of String
Default: null
Setup Babel to write tests using next generation JavaScript
Note: these instructions are for Babel 6. Using Babel 5 is not recommended.
First, install babel dependencies:
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| npm install --save-dev babel-register babel-preset-es2015
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There are multiple ways to setup Babel using the wdio testrunner. If you are running Cucumber or Jasmine tests, you just need
to register Babel in the before hook of your config file
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| before: function() {
require('babel-register');
},
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If you run Mocha tests, you can use Mocha’s internal compiler to register Babel, e.g.:
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| mochaOpts: {
ui: 'bdd',
compilers: ['js:babel-register'],
require: ['./test/helpers/common.js']
},
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.babelrc settings
Using babel-polyfill is not recommended with webdriverio; if you need such features, use babel-runtime instead by running
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| npm install --save-dev babel-plugin-transform-runtime babel-runtime
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and including the following in your .babelrc:
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| {
"presets": ["es2015"],
"plugins": [
["transform-runtime", {
"polyfill": false
}]
]
}
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Instead of babel-preset-es2015, you may use babel-preset-es2015-nodeX, where X is your Node major version, to avoid unnecessary polyfills like generators:
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| npm install --save-dev babel-preset-es2015-node6
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| {
"presets": ["es2015-node6"],
"plugins": [
["transform-runtime", {
"polyfill": false,
"regenerator": false
}]
]
}
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Similar to Babel setup, you can register TypeScript to compile your .ts files in your before hook of your config file.
You will need ts-node as an installed devDependency.
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| before(function() {
require('ts-node/register');
}),
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Similarly for mocha:
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| mochaOpts: {
ui: 'bdd',
compilers: ['ts:ts-node/register'],
requires: ['./test/helpers/common.js']
},
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