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Scripting for BrowserMob using WebDriver

FAQ, How To, Load Testing, Load Testing Best Practices, Load Testing Tips 6 Responses »

Oct 312011

Hello Readers!! It gives me immense pleasure in meeting you with yet another article on WebDriver. WebDriver has been creating a lot of buzz among the Selenium community lately and BrowserMob, an active member of the Selenium community, wasted no time in announcing its support for the WebDriver API.

I hope you had the chance to read the great introduction article on the Webdriver API by fellow blogger Ben.

In this article I would like to touch on the basics of scripting with the WebDriver and the BrowserMob API.
I’m sure many of you, who are new to this API are asking yourselves these questions just like I did.

This is a preview of Scripting for BrowserMob using WebDriver. Read the full post (1248 words, estimated 5:0 mins reading time)

FAQ: How do I annotate a load test?

FAQ, Load Testing Tips No Responses »

Aug 252011

Select any time coordinate in your test plan and simply add a comment in the annotation field. Your annotations are tracked and numbered with a flag, so to review, simply reference the number on the flag in the list of annotations made for that test plan. Don’t worry about making mistakes, you can delete an annotation at any time.

Permanent link to this post (60 words, 1 image, estimated 14 secs reading time)

Repost: In the Driver’s Seat: Load Testing Best Practices – Scripting

FAQ, How To, Load Testing, Load Testing Best Practices, Load Testing Tips, Uncategorized 2 Responses »

Aug 082011

Hello Readers!! Welcome back to Part 3 of our Load Testing Best Practices series, which focuses on writing good load testing scripts.

As I’m sure you would agree to, load testing is an imperative part of every development effort. One of the key components to your load testing efforts is a good load testing script that simulates real user behavior on your web site in the most realistic and accurate way possible.

Before you take a deep dive into the scripting, there are few things you need to plan ahead of time.

This is a preview of Repost: In the Driver’s Seat: Load Testing Best Practices – Scripting. Read the full post (1929 words, 10 images, estimated 7:43 mins reading time)

FAQ: How do I load test cached pages?

FAQ, Load Testing 1 Response »

Aug 052011

Occasionally, users may want to conduct a load test using cached pages. BrowserMob offers this ability through scripting using RBUs. Typical behavior of a RBU is to the run the script once, close the browser, clear the cache, and start over. To prevent the browser from closing and the cache from being cleared, the steps of the script are placed in a loop. The loop encases everything between browserMob.beginTransaction(); and browserMob.endTransaction(); which leaves the browser open and prevents the cache from being cleared until the final iteration of the loop and the end of the script.

This is a preview of FAQ: How do I load test cached pages?. Read the full post (396 words, estimated 1:35 mins reading time)

FAQ: When should I use BrowserMob timeout values?

FAQ, How To, Load Testing Tips No Responses »

May 102011

As you build out your script and plan for a successful load test, it’s important to design the script that incorporates timeout values. BrowserMob has a few types of timeouts that you can use: HTTP-level, Selenium page-level, and Script-level timeouts.

HTTP-level timeouts are controlled by the HTTP client, usually the “c” variable. var c = browserMob.getActiveHttpClient(); and there are 3 commands relating to HTTP timeouts: setConnectionTimeout, setRequestTimeout, and setSocketOperationTimeout. For more information, check out our API documentation which outlines each of these commands.

This is a preview of FAQ: When should I use BrowserMob timeout values?. Read the full post (389 words, estimated 1:33 mins reading time)

FAQ: When should I use “waitForElementPresent” command in my script?

FAQ, How To, Load Testing Tips No Responses »

Apr 262011

selenium.waitForElementPresent(“myelement”);

The waitForElementPresent commands polls the page waiting for the specified element to load. If you are familiar with Webmetrics/WATIR scripting, the command is very similar to the wait_until() command. The waitForElementPresent command is most often used on sites containing dynamic content such as Ajax, JavaScript, etc. Scripts are designed to execute as quickly as possible and Selenium tends to fire steps faster than the DOM can render changes, causing issues/errors with the script playback.

There are a few ways to determine if you need this command:

The first is to check the playback in SeleniumIDE:

This is a preview of FAQ: When should I use “waitForElementPresent” command in my script?. Read the full post (317 words, 1 image, estimated 1:16 mins reading time)

FAQ: What blend of RBUs and VUs would you recommend for my load tests?

FAQ, Load Testing Tips No Responses »

Mar 152011

Setting up your load tests with a blend of RBUs and VUs can be ideal but it does depend on the type of scripts you are running. Does your script require the user to fill out a form or does the site use AJAX? For those instances, RBUs work best. If your script is about browsing the site as a read-only, VUs work just as well; plus saves you money. VUs is simply HTTP and may be harder to script (but 1/10th the price!).

Permanent link to this post (85 words, estimated 20 secs reading time)

Selenium Tips - Wait with WaitForCondition

FAQ, How To, Load Testing Tips, Monitoring 5 Responses »

Mar 142011

Hello Readers, Welcome Back !!

As the first part of this Selenium Tips series, this article intends to summarize the different ways to interact with dynamic sites that refresh content asynchronously wherein the script will have to wait for certain elements to appear or disappear before proceeding further. As you are already aware of, Selenium has several ‘waitFor’ commands that fulfill this purpose. waitForCondition is one among them. ‘waitForCondition’ basically takes in two arguments, a JavaScript snippet and a timeout period in milliseconds. The snippet is executed either until it returns true or until the timeout period, after which the command will return an error. Now enough of theory and let’s get into action.

This is a preview of Selenium Tips – Wait with WaitForCondition. Read the full post (457 words, estimated 1:50 mins reading time)

Do you support functional tests for load testing?

FAQ No Responses »

Feb 232011

While we support Selenium as our core API and Selenium is a popular functional testing toolkit, we do not currently support running tests written in languages like Java/C#/Ruby/Python/etc. There are two reasons we don’t support general unit test-style tests:

First, Often these kinds of tests contain references to resources that aren’t accessible when running the test in the cloud. For example, we’ve seen tests that have hard coded URLs (ie: http://localhost:8080) and reference databases and web services to verify backend functionality.

This is a preview of Do you support functional tests for load testing?. Read the full post (388 words, estimated 1:33 mins reading time)

Regular Expressions and Pattern Matching with BrowserMob and Selenium

FAQ, How To, Load Testing Tips, Monitoring 3 Responses »

Feb 042011

Hello Readers, Welcome back!!

This article intends to explain a few ways of using regular expressions with BrowserMob and Selenium. As we all know already, regular expressions are extremely helpful in scripting dynamic web sites, especially when you run into situations such as picking the first product from a dynamic list of products, clicking on the last link of a dynamic drop-down etc.

To begin with, let’s see a couple of examples for using regular expressions with BrowserMob’s VU (Virtual User) scripts. Not sure what VU is? Check it out here or contact BroserMob Support at anytime.

This is a preview of Regular Expressions and Pattern Matching with BrowserMob and Selenium. Read the full post (298 words, estimated 1:12 mins reading time)

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