Synchronization in Selenium Webdriver - Details of Synchronization in Selenium Webdriver

Synchronization in Selenium Webdriver

Synchronization in Selenium Webdriver is an important step involved in the software application testing using selenium. It is a mechanism where two or more components are made to work parallelly with one another. In general cases, works there will be two components in test automation and they are the Application under test and Test Automation tools.

Both these common work at their own speed and the test scripts have to be written in such a way that both the components should move with the same speed. This helps to avoid errors such as “Element Not Found” and thus save time.

There is two different types of synchronizations, unconditional and conditional synchronization.


In this category of synchronization, only the timeout value will be specified making the tool to wait for a specific time and proceed after the time limit. The major advantage of this type of synchronization is that the application under test can be made to wait while working with third party systems, where it is not possible to write or check a condition. The major disadvantage is that there are chances for unnecessary waiting even when the application is ready.

Conditional Synchronisation

In this type of synchronization in Selenium, a condition can be specified along with timeout so the tool will wait before checking for the condition and starts running if nothing happens. Timeout value also should be specified in this type of synchronization so that the tool can proceed without waiting for a condition to be satisfied. There are implicit and explicit wait conditional statements in Selenium.

Implicit Wait

An Implicit wait will tell the webdriver to poll DOM for a certain period of time while trying to find an element or elements. However, it will not work with all the commands or statements in the application but only with “Find Element” or “Find Elements” statements only.

Explicit Wait

Here, a wait statement is defined with certain conditions within a specific time limit. Usually, this type of wait is used when we need a content or an attribute to change after performing certain actions.

Fluent Wait

Fluentwait is used to define maximum amount of time to wait for a condition to get satisfied.

As mentioned in the beginning of the article, synchronization selenium is an important part of all selenium testings and hence one should learn it thoroughly to master selenium testing.

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