Unit testing is an important part of testing, but there are other aspects of testing that I thought JUnit didn't make easy, such as regression, integration, or functional testing. What I mean by unit testing is testing a class in isolation of all other classes. What do you mean by next-generation testing, and what problems does TestNG address that are not also addressed in JUnit?Ĭédric Beust: JUnit was explicitly designed for unit testing. This interview took place over email, and Artima edited the replies for readability.įrank Sommers: You describe TestNG as a next-generation testing framework. In addition to creating TestNG, Cédric Beust is a senior engineer at Google, and is an active member of the Java Community Process (JCP), having been involved in various aspects of the development of the latest Java release. In this interview, he shares what he considers common misconceptions about unit testing, what JUnit deficiencies led him to write TestNG, and how TestNG helps work with a large number of unit tests. On that occasion, Artima spoke with TestNG creator Cédric Beust about unit testing and TestNG. TestNG, an open-source Java unit testing tool, was created to overcome JUnit's key limitations, and to provide additional features needed to test the latest generation Java applications. While JUnit pioneered Java unit testing, and still remains the most popular Java testing tool, JUnit also comes with many limitations that impose restrictions on developers' testing habits. He also explains the benefits of data-driven testing, and provides a preview of some new TestNG features. In this interview with Artima, TestNG creator Cédric Beust describes what JUnit deficiencies TestNG aims to solve, and talks about some common unit testing misconceptions, including the dangers of overt focus on obtaining complete test coverage. Import is a Java unit testing framework that aims to overcome many limitations of JUnit. * This class prints the given message on console.Ĭreate a java test class, say, TestAnnotationAfterGroups.java in /work/testng/src.Īdd a test method testMethod() to your test class.Īdd an Annotation to method testMethod() and add this method to a group testOne.Īdd a method afterGroups to the test class with annotation and execute it after the testOne group by adding this annotation the test condition and check the behaviour of annotation.įollowing are the TestAnnotationAfterGroups.java contents: Only for and If specified, then this setup/teardown method will only be invoked if the corresponding test method belongs to one of the listed groups.Ĭreate a java class to be tested, say, MessageUtil.java in /work/testng/src. If true, this method will belong to groups specified in the annotation at the class level. The list of groups this class/method belongs to. Whether methods on this class/method are enabled. The list of methods this method depends on. The list of groups this method depends on. ): If set to true, this configuration method will be run even if one or more methods invoked previously failed or was skipped. The following is a list of attributes supported by the annotation: Attributeįor before methods (AfterClass, beforeTest, beforeTestClass and beforeTestMethod, but not beforeGroups): If set to true, this configuration method will be run regardless of what groups it belongs to.įor after methods (afterSuite, afterClass. Annotated method will run only once after the execution of all the test methods of a specified group.
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