- Selenium WebDriver typically has a server and a client. Apart from WebDriver contributors, most people will only be interested in the client API which allows them to control a browser through their script. To get started, install the JavaScript bindings for WebDriver: npm install selenium-webdriver.
- Selenium Webdriver Support for MochaJS. In order to perform Javascript testing with Selenium Webdriver and Mocha in a simple way, webdriver facilitates the usage with MochaJS by wrapping around MochaJS test functions (before, beforeEach, it, etc.) with ‘test’ object creating a scope that provide awareness that webdriver is being used.
- Selenium WebDriver fits in the same role as RC did, and has incorporated the original 1.x bindings. It refers to both the language bindings and the implementations of the individual browser controlling code. This is commonly referred to as just 'WebDriver' or sometimes as Selenium 2.
- In this video we will be talking about the Javascript and its usage in Selenium in greater details. We will be talking about BOM and DOM. Please hit like and share your comments about the video.
- Running tests asynchronously across various browsers will save a lot of time, and Selenium WebDriver provides this functionality. Selenium handles asynchronous testing by using JavaScript promises. Now, let’s write the first code and create one simple test that checks if Selenium works stand alone, without using Mocha.
It provides mechanism to execute Javascript through Selenium driver. It provides “executescript” & “executeAsyncScript” methods, to run JavaScript in the context of the currently selected frame or window. There is no need to write separate script to execute JavaScript within the browser using Selenium WebDriver script.
Selenium is a browser automation library. Most often used for testingweb-applications, Selenium may be used for any task that requires automatinginteraction with the browser.
Installation
Selenium may be installed via npm with
You will need to download additional components to work with each of the majorbrowsers. The drivers for Chrome, Firefox, and Microsoft's IE and Edge webbrowsers are all standalone executables that should be placed on your systemPATH. Apple's safaridriver is shipped with Safari 10 for OS X El Capitan andmacOS Sierra. You will need to enable Remote Automation in the Develop menu ofSafari 10 before testing.
| Browser | Component |
|---|---|
| Chrome | chromedriver(.exe) |
| Internet Explorer | IEDriverServer.exe |
| Edge | MicrosoftWebDriver.msi |
| Firefox | geckodriver(.exe) |
| Safari | safaridriver |
Usage
The sample below and others are included in the example directory. You mayalso find the tests for selenium-webdriver informative.
Using the Builder API
Javascript Code In Selenium Webdriver
The Builder class is your one-stop shop for configuring new WebDriverinstances. Rather than clutter your code with branches for the various browsers,the builder lets you set all options in one flow. When you callBuilder#build(), all options irrelevant to the selected browser are dropped:
Why would you want to configure options irrelevant to the target browser? TheBuilder's API defines your default configuration. You can change the targetbrowser at runtime through the SELENIUM_BROWSER environment variable. Forexample, the example/google_search.js script is configured to run againstFirefox. You can run the example against other browsers just by changing theruntime environment
The Standalone Selenium Server
The standalone Selenium Server acts as a proxy between your script and thebrowser-specific drivers. The server may be used when running locally, but it'snot recommend as it introduces an extra hop for each request and will slowthings down. The server is required, however, to use a browser on a remote host(most browser drivers, like the IEDriverServer, do not accept remoteconnections).
To use the Selenium Server, you will need to install theJDK anddownload the latest server from Selenium. Once downloaded, run theserver with
You may configure your tests to run against a remote server through the BuilderAPI:
Or change the Builder's configuration at runtime with the SELENIUM_REMOTE_URLenvironment variable:
You can experiment with these options using the example/google_search.jsscript provided with selenium-webdriver.
Documentation
API documentation is available online from the Selenium project.Additional resources include
- the #selenium channel on freenode IRC
- the selenium-users@googlegroups.com list
- SeleniumHQ documentation
Contributing
Contributions are accepted either through GitHub pull requests or patchesvia the Selenium issue tracker. You must sign ourContributor License Agreement before your changes will be accepted.
Node Support Policy
Each version of selenium-webdriver will support the latest semver-minorversion of the LTS and stable Node releases. All semver-major &semver-minor versions between the LTS and stable release will have 'besteffort' support. Following a Selenium release, any semver-minor Node releaseswill also have 'best effort' support. Releases older than the latest LTS,semver-major releases, and all unstable release branches (e.g. 'v.Next')are considered strictly unsupported.
For example, suppose the current LTS and stable releases are v6.9.5 and v7.5.0,respectively. Then a Selenium release would have the following support levels:
| Version | Support |
|---|---|
| <= 6.8 | unsupported |
| 6.9 | supported |
| 7.0-4 | best effort |
| 7.5 | supported |
| >= 7.5 | best effort |
| v.Next | unsupported |
Support Level Definitions
supported: A selenium-webdriver release will be API compatible with theplatform API, without the use of runtime flags.
best effort: Bugs will be investigated as time permits. API compatibility isonly guaranteed where required by a supported release. This effectivelymeans the adoption of new JS features, such as ES2015 modules, will dependon what is supported in Node's LTS.
unsupported: Bug submissions will be closed as will-not-fix and APIcompatibility is not guaranteed.
Projected Support Schedule
If Node releases a new LTS each October and a new major version every 6months, the support window for selenium-webdriver will be roughly:
Javascript Alert In Selenium Webdriver
| Date | LTS | Stable |
|---|---|---|
| (current) | 8.9 | 9.0 |
| 2018-04 | 8.x | 10.0 |
| 2018-10 | 10.x | 11.0 |
| 2019-04 | 10.x | 12.0 |
| 2019-10 | 12.x | 13.0 |
Issues
Javascript Selenium Webdriver Api
Please report any issues using the Selenium issue tracker. When usingthe issue tracker
- Do include a detailed description of the problem.
- Do include a link to a gist with anyinteresting stack traces/logs (you may also attach these directly to the bugreport).
- Do include a reduced test case. Reporting 'unable to findelement on the page' is not a valid report - there's nothing for us tolook into. Expect your bug report to be closed if you do not provide enoughinformation for us to investigate.
- Do not use the issue tracker to submit basic help requests. All helpinquiries should be directed to the user forum or #selenium IRCchannel.
- Do not post empty 'I see this too' or 'Any updates?' comments. Theseprovide no additional information and clutter the log.
- Do not report regressions on closed bugs as they are not activelymonitored for updates (especially bugs that are >6 months old). Please open anew issue and reference the original bug in your report.
License
Licensed to the Software Freedom Conservancy (SFC) under oneor more contributor license agreements. See the NOTICE filedistributed with this work for additional informationregarding copyright ownership. The SFC licenses this fileto you under the Apache License, Version 2.0 (the'License'); you may not use this file except in compliancewith the License. You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing,software distributed under the License is distributed on an'AS IS' BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANYKIND, either express or implied. See the License for thespecific language governing permissions and limitationsunder the License.