Expertiza documentation

Plenty of Testing framework exist for Java. JUnit has been the de facto standard for unit testing. However, other frameworks such as TestNG, JTIGER have been built to address various faults and deficiencies with JUnit. Our primary objective is to compare the various testing frameworks that exist for object oriented languages based on the primary purpose of the framework, strength, platforms that are supported by them, etc and thus help in choosing the best testing framework that fits in a particular suitable environment.

TestNG is a testing framework which can help to meet a broad range of testing such as unit testing, integration testing, functional testing, end-to -end testing.

To write a TESTNG test, we need to: Write the business logic of the test, and insert the TestNG annotations in them. Add the information about our test (such as: the class name, the groups we wish to run, etc) in a testing.xml file or in build.xml. Run the test. TestNG supports data driven testing

TestNG is invoked in several different ways: With a testing.xml file ANT Command line

It is possible to group the test methods of TestNG. We can declare methods that belong to these groups and specify groups that contain other groups. It is very flexible as it can help in choosing one set of regular expression and excluding the other sets. This splits the various test groups and there is no need to recompile again if we want to run two different tests back to back.

Requirements: JDK 1.4, 1.5 Invoked in many environments such as command line, ant, ECLIPSE, IDEA, MAVEN, etc

The annotations available in TestNG can be found at: http://testng.org/doc/documentation-main.html#annotations

TestNG is inspired from JUnit and Nunit, with additional functionalities such as Flexible test configuration, support for data driven testing, etc.

'	JUnit4	TestNG	Cactus
Supporting Type of Testing	Suitable more for Unit testing	Supports Unit testing,Functional testing, end-to-end testing, integration testing	Primarily unit testing. Also have frameworks for code logic unit testing , functional logic unit testing
Conventions	Rigid Example:	Flexible	Not as flexible as TestNG
Derived from JUnit	Yes, from the previous versions	Inspired from Junit,with added functionalities	Extends JUnit
Init ()	Init() has to be declared static	Not necessary
Flexibility for large suites	Not flexible for large test suites,	Flexible for running large test suites of code and thus one test\'s failure shouldn\'t mean having to rerun a suite of thousands.	No, it is suitable for unit testing.
Suitable for	Best for a single object	Best for a higher level testing	Best for server-side java code such as Servlets, EJB, etc.
Runs on	Command line, ANT,ECLIPSE	Command line,ANT, ECLIPSE, IDEA,MAVEN	ECLIPSE

Some other JAVA testing units

'	JEasyTest	J2ME Unit Testing Toolkit	Jailer	Mockrunner
Features	Generates coverage report Allows virtual mock object	Is a Java 2 Micro Edition (J2ME) library containing a unit testing framework for J2ME	Does test data exporting. JDBC agnostic Generates DbUnit datasets, hierarchically structured XML, and topologically sorted SQL-DML.	A lightweight framework for unit testing applications in the J2EE environment.
Integrates with:	ECLIPSE 3.3	ANT	Platform Independent	OS independent

Cactus

(source : http://jakarta.apache.org/cactus/index.html) Cactus is a test framework for testing server-side java code such as Servlets, EJB, etc. It extends J Unit. Cactus implements an in-container strategy which means that tests are executed inside the container. The Cactus testing unit can be viewed as a system that consists of the following components: Cactus Framework: This provides the API to write Cactus tests. Cactus Integration Modules: They are front ends and frameworks that provide easy ways of using the Cactus Framework. Eg: Eclipse plugin Cactus Samples: They demonstrate how to write Cactus tests and how to use a few Integration Modules.

A useful testing framework provided by Cactus is integration unit testing( type 2). The tests written for this framework will exercise the interactions with the container. Cactus also provides other frameworks such as code logic unit testing (type 1) ,functional unit testing( type 3).

Cactus was developed to fit Type 2 but also to be a very good compromise for types 1 and 3, with the idea that it is much easier to have to write tests for a single framework than for several. It is believed that Cactus provides a middle ground that provides a high confidence that your code will run when deployed .

To know how it works, click here :

http://jakarta.apache.org/cactus/how_it_works.html