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Testng Tutorial-understanding The Testng Framework

By Expert Author: S S Pathak

Originally inspired by JUnit and NUnit, testNG is a testing framework developed by Java. To understand the concept behind the framework, you could start by undertaking a testng tutorial. The framework has adopted some new innovative technology that makes its easy to use and it is also very reliable.

Originally inspired by JUnit and NUnit, testNG is a testing framework developed by Java. To understand the concept behind the framework, you could start by undertaking a testng tutorial. The framework has adopted some new innovative technology that makes its easy to use and it is also very reliable. TestNG is designed in such a manner that it covers all categories of tests. Some of the test categories covered include unit, end-to-end and functional. The main aim of testNG is to enhance efficiency. The letters NG stands for ‘next generation’. It is an improvement of the originally used test frameworks. Upon undertaking the testng tutorial, you will have an understanding of broader and deeper test coverage.

The use of testNG has been adopted by many individuals due to the many advantages of the framework. The framework overcomes the limitations of other popular testing frameworks such as JUnit. Some of the main advantages of testNG over JUnit include; annotations that are easier to understand. The testng annotations are much easier to understand than those of JUnit. It is very easy to group tests accordingly. With testNG, parallel testing is usually possible. What are testng annotations? They are lines of codes that usually control how the method below them will be executed. The annotations are always preceded by @ symbol.

Mainly testNG frameworks are based on testng eclipse. Whenever you are installing testng in eclipse, there are various steps that you need to follow. To begin with, launch eclipse. Then proceed to the Help menu where you choose the ‘Install software’ option. The next option involves choosing the ‘add’ button on the install dialog box. When you complete installing the testNG, eclipse may restart. Upon restarting, you will simply verify that testNG was successfully installed. If you are currently using JUnit testing, you can convert it into testNG. The easiest way to do this is by using the testing eclipse plug-in refactoring support.

Under the testng tutorial, you will understand how to write tests in testNG. There are three main steps that need to be followed. In the first step, write the business logic of the test. Also ensure that you insert the testng annotations at this step. Some examples of annotations that are used in testing include the following; @beforehand, @afterclass, @beforeclass, @before suite and@ dataprovider to name just but a few. On configuring testNG using some annotations, you will be able to perform some java logic before and after certain points. In testNG, tests are run in the order in which they are found in testng.xls file.

Also covered under testng eclipse tutorials are the various dependencies in testNG. Normally, dependencies are usually specified with annotations or in xml file. The two main types of dependencies are; Hard dependency and soft dependency. Under hard dependency, all the methods that the test depends on must run and succeed. If a failure happens to occur, the testNG method will fail. However, under soft dependency testNG will still run even after some methods it depends on have failed. Thus, soft dependency is preferable over hard dependency.
Resource: http://www.automation-simplified.com/articles/testng-tutorial.html

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