I do have a Test Suite with actually 20 Test Cases defined in 20 separate classes which needs to be Executed in parallel in browser Firefox on Linux OS
Some TC's have Java code which handles/opens new windows which passes control to these windows based on title of new window opened
When executed serially all TC's passes.
When trying to execute parallely through Xml file with thread count=3, and timeOut=10 sec(10000 mili sec) maximum for each TC's
My Question:
How will the webDriver Handles this situation(If Multiple windows are opened)???? and wont there be a conflict and how will the webDriver transfer the control to Exact windows before the window closes and pass the TC's???? Needs to execute/pass all the 20 Tc's within the maximum time frame.
P.S: Needs some valuable Suggestions to address this issue.
Webdriver has nothing to do with parallelization, It is TestNG feature.
Basically we execute testng tests in parallel which spawns their own browsers or driver instances, these instances are totally independent of each other and are uniquely identified by sessionid. Now even if some of these browser open in new tab or window they are tightly coupled because sessionid remains the same.
I can confirm this because i have maintained such a setup and with no problem.
Related
I am trying to build an instagram bot with selenium. So far I have managed to get it work with 1 chrome window and 1 account, it auto follows, likes etc. with the given http requests on my express server. However when I try it with 2 different accounts on 2 different selenium instances or windows, the first one stops executing the function(or maybe it starts executing on the second chrome window, I dont know whats happening). So can anyone explain me if and how its possible to continue execution on multiple windows? Note: I don't want to switch between instances.
You can use the Selenium Grid to implement the scenario.
Generally, Hub & Node Structure is generally used to run parallel Tests.
https://www.guru99.com/introduction-to-selenium-grid.html
Above link will help you to get the concept of Grid.
I have a selenium java code which executes tests on IE. I want to try executing these tests in parallel using the same browser. How can I achieve this? And will I need to use multiple nodes to do so?
You need to setup a selenium grid which has atleast 2 nodes attached to it.
When it comes to IE support, you can run ONLY 1 test at any given point in time on one selenium node.
So if you need to run two parallel IE tests, then you would need to have atleast 2 nodes attached to your grid.
This blog post of mine gives you a complete overview of the selenium grid.
https://rationaleemotions.github.io/gridopadesham/
I have a large suite of SpecFlow tests executing against a selenium grid running locally. The grid has a single host configured for max 10 firefox instances. The tests are run from NUnit serially, so I would only expect to require a single session at a time.
However, when approximately half of the test cases have been run, the console window reporting output from the hub starts reporting
INFO: Node host [url] has no free slots
Why?
All the test cases are associated with a TearDown method that closes and disposes the WebDriver, although I haven't verified that absolutely every test gets to this method without failing. I would expect a maximum of one session to be active at once. How can I find out what is stopping the host from recycling those sessions?
edit #1:
I think I've narrowed down the cause of the issue - it is indeed to do with not closing the WebDriver. There are [AfterScenario] attributes on the teardown methods that are meant to do this, but they only match a subset of scenarios as they have parameters on them. Removing the parameter so that the teardown associates with every scenario fixes the session exhaustion (or seems to) but there are some tests that expect to reacquire an existing session, so I'll have to fix them separately.
A bit of background: This test suite was inherited as part of a 'complete' solution and it's been left untouched and never run since delivery. I'm putting it back into service and have had to discover its quirks as I go - I didn't write any of this. I've had brief encounters with both Selenium and SpecFlow but never used the two together.
The issue turned out to be a facepalm-level fail - mostly in the sense that I didn't spot it. Some logging code was trying to write to a file that wasn't there, the thrown exception bypassed the call to Dispose() on the WebDriver, and was then swallowed with no error reporting. Therefore the sessions were hanging around. Removing the logging code fixed the session exhaustion.
Look on the node (remote desktop) and see what is happening on the box. It does sound like your test isn't closing out it's session properly.
I'm trying to simulate a firefox load testing situation. I want my to test how 10 simultaneous logins would play out on my system. I already have a connected selenium grid hub and 10 open nodes.
So far, I know I can write the test case and run it 10 times which isn't what I need because it isn't automated. I also know that I can use invocation count on the test to make it run as many times as i want but this only works on the same browser node.
Does anyone have any ideas on how to automatically distribute the same test case to multiple instances of the same driver profile?
i.e. Run a login case test times on the same firefox profile open in 10 different nodes in parallel.
Gracias!
P.S. I built my tests using testNG if that matters.
Basically selenium and testNG is not for such requiurement. You should use some dedicated tool for that like jmeter.
However you can run n methods parrallel let say if you want to login with 10 dif user in 10 thread/browser you can create test data driven and configure to run method in parrallel. Make sure you are providing proper value of parrallel thread count.
How about combining threadpoolsize with invocationcount. - http://testng.org/doc/documentation-main.html#parallel-running
Grid would take care to distribute on the 10 nodes.
use headless browser like GHOST and then invoke multiple threads as ghost has no UI so it would work in your case
I have multiple similar sites (same layout, just different data), and each of them has drop down menu on mouse over (and disappears on mouse out).
I am using Selenium 2 and WebDriver, and I have one selenium test case that basically do the mouse over and make sure each of the link in the drop down menu works.
I am using selenium grid, so I have a hub and few test machines.
Because I have many sites (few hundred) to test, so I am thinking of making each machine to run the test case against multiple sites in parallel.
My concern is because there can be only one active browser at a time, will it cause issue if web driver tries to perform Action.moveToElement() on multiple browsers at roughly the same time? Will only the active browser performs Action.moveToElement() properly and other browsers fail? If there will be an issue, is there any workaround?
I have tried it using JUnitCore.runClasses(ParallelComputer.classes(), SomeClass1.class, SomeClass2.class, SomeClass3.class);, it decreased the passed tests percentage from 100% to about 67% when running three tests on a machine. Not good =/.
The good part - firefox actually can do it in parallel. If the FF instances are delayed between each other so they don't do the same thing at the same time, it works better. Some of the failures happened during a Firefox bootup - so if you can minimize closing and opening windows, do it. But still, sometimes it just fails for no reason.
If you really would use the saved time, then go for it, log all failed tests and run them again after the first round - this time one at a time.
You could also solve this, depending on your ultimate goal of testing, by not using the Action class with the mouse-movement click, but instead use the WebDriver findBy-click method or Javascript executor method. It would probably be less contentious when running multiple windows at the same time. If the Action class, when defining a mouse movement, uses native calls at all, such as "move to Point", then one browser over the top of another, then I would guess it's possible that the movement point could be masked by another window. I am really not sure about this, just giving you another idea to try.