i am using webdriverbackedSelenium for my tests , i see that it isn't supporting capture network traffic method. can anyone tell me when webdriverbackedselenium is extending default selenium why isn't it supporting captureNetworkTraffic method
Selenium WebDriver and Selenium RC use fundamentally different mechanisms to automate the browser. RC installed itself as a proxy in some modes of operation, which allowed it to capture all communications between browser and web server. WebDriver's philosophy is designed to more closely emulate the user's experience, including not blindly installing a proxy without the user's knowledge, so WebDriver is not able to capture that traffic by default.
Selenium RC is deprecated, and has been for over two years. It is receiving no attention from the development team, and is unlikely to be improved in the future. However, since many people have significant investments in code using the RC API, the project provides a bridge class, WebDriverBackedSelenium. It is designed to allow you to migrate your RC code to WebDriver over time. It is not intended as a permanent solution. It does not, will not, cannot, and should not implement every single method of the Selenium RC API. It implements enough to allow your code to compile and mostly run, giving you the opportunity to change your code over to the WebDriver API.
If you absolutely require capturing network traffic to the browser using WebDriver, the API allows you to specify a proxy to use with the browser being automated. There are a number of proxies out there which allow you to capture, examine, and even modify the traffic to the browser. Some examples that people have used to good effect are BrowserMob proxy and Fiddler.
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I'm learning Selenium but I am concerned that the Webdriver (Chromedriver.exe, Geckodriver.exe) seems to open a port for communication functioning as a proxy between the selenium code and the browser. I don't want to expose myself to any vulnerabilities and would prefer some form of direct browser communication. I've viewed several solutions, but selenium just seems to be the reigning champion.
It appears that some form of what I am looking for was present with PhantomJS, but that seems to be no longer supported. This leaves me two options:
-Find a browser that selenium can communicate directly with without the aid of Webdriver.
-Find a way to completely restrict that port that it seems to open up so it does not allow connections from anybody on the network and no one can connect to my local machine.
Any suggestions folks?
What is the difference between
Using the performance testing tool directly(Jmeter ,..)
Integrate the performance testing tool with selenium using plugin(Jmeter ,..).
Whether I can achieve all the functionalities in both the ways.
If used as a plugin will there be any limitations?
Thanks.
Performance testing tool acts on HTTP protocol level, basically pretty much the same as browser does, however in particular JMeter:
JMeter is not a browser, it works at protocol level. As far as web-services and remote services are concerned, JMeter looks like a browser (or rather, multiple browsers); however JMeter does not perform all the actions supported by browsers. In particular, JMeter does not execute the Javascript found in HTML pages. Nor does it render the HTML pages as a browser does (it's possible to view the response as HTML etc., but the timings are not included in any samples, and only one sample in one thread is ever displayed at a time).
therefore you can only test backend performance using JMeter however you will not get client-side performance metrics
Protocol-based tests have much less footprint in terms of resources (CPU, RAM, etc.) so you can simulate thousands of virtual users from a mid-range modern laptop.
Selenium is a browser automation framework, it operates real browsers so:
you have client-side performance metrics (including ability to query Window.Performance metrics)
and you don't have HTTP-protocol related metrics (connect time, latency, concurrency, throughput, etc.)
Browser-based tests have huge footprint in terms of resources as browsers are very resource intensive, for example Firefox 74 requires 1 CPU core and 2 GB of RAM per browser instance so you can kick off only several browsers on a mid-range modern laptop
Depending on your requirements you might want to either test the backend using JMeter or the frontend using Selenium or create the main load using JMeter and use 1-2 real browsers to test client-side performance.
If you're looking for a way of integrating JMeter with Selenium take a look at WebDriver Sampler (it's a JMeter Plugin which can be installed using JMeter Plugins Manager)
As we known WebDriver protocol is design for automation test purpose. But the major browsers also provide DevTool protocol. In some cases the DevTool protocol could achieve more powerful interactions and operations compare to WebDriver.
My question is why there are two different protocols and what's the main difference between these two protocols? Is there any selection experience available to share for a project development?
Thanks in advance!
Reference:
DevTools
https://learn.microsoft.com/en-us/microsoft-edge/devtools-protocol/
https://chromedevtools.github.io/devtools-protocol/
https://searchfox.org/mozillacentral/source/devtools/docs/backend/protocol.md
WebDriver:
https://www.seleniumhq.org/projects/webdriver/
https://www.w3.org/TR/webdriver1/
https://learn.microsoft.com/en-us/microsoft-edge/webdriver
https://developer.mozilla.org/en-US/docs/Mozilla/QA/Marionette/WebDriver
https://sites.google.com/a/chromium.org/chromedriver/downloads
Main difference between WebDriver protocol and DevTools protocol is that WebDriver protocol needs a middle man like browser-driver (eg: chrome-driver) which is a server that sits between the automation script and browser enabling browser control, but in case of DevTools protocol the automation script can directly talk to browser running in debug mode making headless automation pretty straight forward.
And Chrome driver internally uses DevTools protocol to control browser, so if we are using WebDriver protocol it will in turn use Devtools protocol to control browser.
If cross-browser testing is something important for the new testing tool, DevTools protocol may not be suitable now, as there is no standard yet and it is mostly work in progress. Otherwise DevTools protocol will be a great choice as it gives more control like intercepting request header, simulating network etc and makes headless automation way easier.
WebDriver
WebDriver supplies us a well-designed object-oriented API that can provide improved support for modern advanced web-applications created through dynamic web pages. In short, WebDriver is the remote control interface that enables us to introspect and control the user agents. It provides us a platform and language neutral wire protocol along with as a way for out-of-process programs to remotely instruct the behavior of Web Browsers.
WebDriver Specification
The WebDriver Specification was published by the Browser Testing and Tools Working Group as Editor's Draft. Editor's Draft does not imply endorsement by the W3C Membership and may be updated, replaced or obsoleted by other documents at any time.
DevTools Protocol
The Developer Tools Protocol is used by various Browsers, JavaScript Engines and debugging tools to:
Help web developers with a set of diagnostics tools which work well across a variety of targets.
To converge the need for target-specific devtools protocol adapters and simplify the experience for tool users and tool developers.
Provide a vendor-neutral platform to facilitate collaboration and mutual consensus building between different protocol implementations and interested clients.
Reduce the engineering investment necessary to build any further compatible protocol implementations as per user stories.
Some of the Browser Engines and Browsers those have a built-in debugging protocol are:
Chrome DevTools
WebKit / Safari
Node.js
Firefox 1 (in development)
Edge 2 ([in development] (link will be updated soon))
Some of the adapters that exposes a common protocol:
Microsoft Edge Diagnostics Adapter - will be replaced by the native support (mentioned above).
RemoteDebug iOS WebKit Adapter
Here you can find the list of adapters in RemoteDebug - Protocol Adaptors
1. Note that DevTools Protocol for Firefox is Work In Progress
2. Note that DevTools Protocol for Edge is Work In Progress
I am planning to write Selenium tests for my application and want them to run on a wide variety of browsers and versions. I am also planning to use a virtualisation service such as SauceLabs or TestingBot.
However, as far as I can tell there are a number of different Selenium components such as:
Selenium WebDriver itself
Chrome Driver
InternetExplorer Driver
Opera Driver
Safari Driver
etc
Furthermore, I read in articles like https://support.saucelabs.com/customer/portal/articles/2005317-default-selenium-version-for-each-firefox-browser-version that you might be best advised to change the versions of these to get better compatibility depending on the version of the browser you are targeting.
I am confused as to whether I need to have different versions of Selenium and other components installed locally OR should I just have the latest version of Selenium WebDriver installed locally, SauceLabs/TestingBot will have specific versions on their VMs and the two will magically work together?
Thanks for any advice!
If you're executing on the cloud, be it Sauce, TestingBot, BrowserStack, etc., you won't need to have the Selenium server or any of the browser drivers installed locally.
That being said, however, I would advise keeping the standalone server along with chrome-driver and the IE driver (and/or any other browser drivers you need) installed locally for debugging tests under development. It's much easier while you're coding to run a test on your own machine and get it to the point where it's working as expected prior to committing. You can then use Sauce or whatever cloud hosted grid solution for your official test runs.
I typically just have the most recent versions installed locally, but this could be different for you based on your requirements. At work, I develop automated tests for internal applications. All of our users are all on the same pre-configured Windows image with the same browsers/versions. As such, I only need to worry about the supported platforms in my tests. If you're working with a public-facing application, you might consider referring to the supported browser/versions for the application. Juggling different versions of the same browser on a local machine can get pretty tedious, so even then, if I were in that situation, I'd likely configure my machine to the most common platforms and execute locally while in development, then use something like Sauce for executing on specific platforms. In short, I like to keep my local environment as clean and simple as possible, and let Sauce do the heavy lifting of managing all the different browser/version/os combinations for me.
I can't found any question/answer about that (probably I don't know how to find it...)
Could somebody give me a global idea to execute +200 Selenium webdriver tests (Python) from cloud servers/tools?
Thanks!!
rgzl
Another way is Saucelabs, using this service you'll be able to just send your Selenium
Java/Python tests
to their Cloud infrastructure for execution. The benefits of such testing are obvious – no need to waste time and resources setting up and maintaining your own VM farm, and additionally you can run your test suite in various browsers in parallel. Also no need to share any sensitive data, source code and databases.
As said in this acticle:
Of course inserting this roundtrip across the Internet is not without cost. The penalty of running Selenium tests this way is that they run quite slowly, typically about 3 times slower in my experience. This means that this is not something that individual developers are going to do from their workstations.
To ease the integration of this service into your projects, maybe you'll have to write a some kind of saucelabs-adapter, that will do the necessary SSH tunnel setup/teardown and Selenium configuration, automatically as part of a test.
And for a better visualization:
Here's a global idea:
Use Amazon Web Services.
Using AWS, you can have a setup like this:
1 Selenium Grid. IP: X.X.X.X
100 Selenium nodes connecting to X.X.X.X:4444/wd/register
Each Selenium node has a node config, running 2 maxSessions at once. (depending on size of course)
Have also, a Continuous integration server like Jenkins, run your Python tests Against X.X.X.X grid.