Web Automation Testing - Selenium

By Author: Siyaram ray
Total Articles: 79
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Selenium is a web Automation apparatus which can used to perform testing ONLY on Web Applications not Desktop based applications.

There are others device which can be utilized to mechanize both web applications and windows applications like QTP (Quick Test Professional). As each one mindful that QTP is Licensed Tool AND Selenium is Open source device, download it arranges it and appreciates.

This is the principle motivation behind why a large portion of the organizations pick Selenium at whatever point they need to mechanize Web applications

It has the beneath parts:

Selenium IDE:

This is a firefox module which manages and playback instrument. Client can make basic contents and fare to selenium RC or Webdriver.

Selenium RC:

Is a device which permits to robotize web application utilizing any of the programming dialect that backings.

Selenium Webdriver:

It makes guide calls to the program utilizing every program's local help for mechanization.

Webdriver was created to better help dynamic website pages like Ajax where components of a page may ...
... change without the page itself being reloaded.

Selenium Grid:

Is a server that enables tests to utilize web program occasions running on remote machines?

There are others instrument which can be utilized to robotize both web applications and windows applications like QTP (Quick Test Professional). As each one mindful that QTP is Licensed Tool AND Selenium is Open source device, download it arranges it and appreciates.

This is the primary motivation behind why the vast majority of the organizations pick Selenium instrument at whatever point they need to computerize Web applications

As an apprentice, on the off chance that you need to learn selenium, it is not that troublesome, you simply begin utilizing Selenium IDE which is a Firefox module, used to record and play the content. This is only for training, and you can figure out how the orders that are utilized to run the content in IDE.

In any case, recollect IDE itself is insufficient for successful experiment composing/scripting. Since it doesn't bolster circling ideas and you can't alter it for your requirements.

Now of time, you can begin utilizing Webdriver with the programming dialect that you are OK with.

We incline toward Java as it is from long time in the business and there are numerous online discussions which offer help to Webdriver with Java.
How and where to download selenium?

It is exceptionally easy to download selenium. We have to download a jug record from Selenium Downloads. In the downloads page, you will discover the name as Selenium server, where you will have a connection to download the most recent variant of selenium.

Also, at Selenium Client and Webdriver Language Bindings, You have to pick the dialect that you will use to compose the selenium contents. The present rendition of selenium is 2.39.0 (At the season of composing).
Make sure you determine the most current form as there will be a few improvements and fixes will be included/attached. You can likewise allude to change log record for reference. The downloaded record name will be selenium-server-independent.

Requirements to learn selenium?

Before hopping into selenium, client ought to know about fundamental java ideas and HTML ideas which will assist the selenium designer with creating powerful contents.

HTML information: User ought to have learning in rudiments of HTML labels like content box, content range box, radio catches registration and the labels for these components and so forth.

Java information for Selenium:

User needs least learning in the underneath ideas:

• Static and Non Static Variables
• Control proclamations
• Administrators
• Protests and Classes
• Return Types
• Uh oh ideas (Inheritance, Overriding)
• Strings
• Constructors
• Clusters
• Special case Handling
• Bundles

On the off chance that the client is truly solid in the above ideas, he/she can play with selenium with least exertion.

A client without these ideas additionally can begin scripting, however needs to strive to compose successful test contents utilizing selenium.

Synchronization in Selenium Webdriver:

It is a system which includes more than one part to work parallel with Each other.

By and large in Test Automation, we have two parts

1. Application under Test
2. Test Automation Tool.

Both these segments will have their own particular speed. We ought to compose our contents such that both the parts should move with same and wanted speed, so we won't experience "Component Not Found" blunders which will devour time again in investigating.

Synchronization can be grouped into two classifications:

1. Unconditional
2. Conditional Synchronization

Unconditional:

In this we simply indicate timeout esteem as it were. We will influence the device to hold up until certain measure of time and after that continues to further.

Cases: Wait() and Thread.Sleep();

The primary burdens for the above explanations are, there is a possibility of superfluous holding up time despite the fact that the application is prepared.

The preferences resemble in a circumstance where we cooperate for outsider frameworks like interfaces, it is impractical to compose a condition or check for a condition. Here in these circumstances, we need to make the application to sit tight for certain measure of time by indicating the timeout esteem.

Conditional Synchronization:

We determine a condition alongside timeout esteem, with the goal that instrument sits tight to check for the condition and after that turn out if nothing happens.

It is essential to set the timeout esteem in restrictive synchronization, in light of the fact that the instrument ought to continue assist as opposed to making the device to sit tight for a specific condition to fulfil.

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