Page Object Model

-
Design patterns

A Design pattern is a generic solution to a common software design/architecture problem. Implementation of these design patterns leads to inclusion of best practices and best solution, evolved over the time by others while working with similar problems.

Page Object Model in Selenium

A Page Object Model is a design pattern that can be implemented using selenium webdriver. It essentially models the pages/screen of the application as objects called Page Objects, all the functions that can be performed in the specific page are encapsulated in the page object of that screen. In this way any change made in the UI will only affect that screens page object class thus abstracting the changes from the test classes.

Advantages of using Page Object Model

1.Increases code reusability - code to work with events of a page is written only once and used in different test cases
2.Improves code maintainability - any UI change leads to updating the code in page object classes only leaving the test classes unaffected
3.Makes code more readable and less brittle

Creating a Page Object Model in Java

Here, we'll create an automation framework implementing Page Object Model using Selenium with Java.
Suppose we have to test a dummy application with only a login page and a home page. To start with we first need to create page objects for all available pages in our application - LoginPage.java and HomePage.java. Then we will create a test class that will create instance of these page objects and invoke there methods to create tests.
Let's take the scenario where in the login page user enters valid credentials and on clicking submit button, user is redirected to home page.

Content of LoginPage.java




Content of HomePagePage.java















Content of Test class - POMTest.java 



This was just a demo for understanding of Page Object Model, an actual project would require several updations like creating abstract classes for page objects, creating base classes for test classes, creating helper and utility classes for database connectivity, for passing test data through config files etc

Comments

Post a Comment

Popular posts from this blog

TestNG Listeners

-
http://examples.javacodegeeks.com/enterprise-java/testng/testng-listeners-example/ http://www.toolsqa.com/selenium-webdriver/testng-listeners/ https://rationaleemotions.wordpress.com/2012/01/27/listen-to-what-i-have-to-say-about-testng-listeners/
Read more

What is Wireframe ?

-
    A wireframe is a layout of a web page that demonstrates what interface elements will exist on key pages. It is a critical part of the interaction design process. The aim of a wireframe is to provide a visual understanding of a page early in a project to get stakeholder and project team approval before the creative phase gets under way. Wireframes can also be used to create the global and secondary navigation to ensure the terminology and structure used for the site meets user expectations. It is quicker and cheaper to review and amend the structure of the key pages in a wireframe format. Iterating the development of the wireframes to a final version will provide the client and the design team confidence that the page is catering to user needs whilst fulfilling the key business and project objectives. Often used to complete the User Centred Design process, wireframes are also used at the beginning of the design phase. A prototype usability...
Read more

Database Sharding

-
 What is Sharding? Sharding is a database architecture pattern related to horizontal partitioning — the practice of separating one table’s rows into multiple different tables, known as partitions. Each partition has the same schema and columns, but also entirely different rows. Likewise, the data held in each is unique and independent of the data held in other partitions. It can be helpful to think of horizontal partitioning in terms of how it relates to vertical partitioning. In a vertically-partitioned table, entire columns are separated out and put into new, distinct tables. The data held within one vertical partition is independent from the data in all the others, and each holds both distinct rows and columns. Should I Shard ?  Whether or not one should implement a sharded database architecture is almost always a matter of debate. Some see sharding as an inevitable outcome for databases that reach a certain size, while others see it as a headache that should...
Read more