tailieunhanh - Simple Java Unit Testing with JUnit 4 and Netbeans 6.1

What is Unit Testing Method of testing that verifies the individual units of the code is working properly (Wikipedia). Test the smallest unit in source code | Simple Java Unit Testing with JUnit 4 and Netbeans Simple Java Unit Testing with JUnit 4 and Netbeans Kiki Ahmadi JUG­Bonek What is Unit Testing Method of testing that verifies the individual units of the code is working properly (Wikipedia). Test the smallest unit in source code Why Unit Testing Verifies if the unit is working offcourse! Make sure the unit is working even after late changes in source code (regression test) Provides living documentation of how the units ( Method) works. Unit Testing in Java 2 most used testing framework in java ◦ Junit ◦ TestNG This time we used Junit because its embedded in netbeans . What is Junit Is a unit test framework in java Developed by Kent Beck and Erich Gamma Widely used and commonly become standard unit test framework Is part of xUnit family. xUnit is a ported Junit for various language. Simple JUnit Create test class and test case. Use an assert method for ensuring method output ◦ assertEquals() ◦ assertTrue() ◦ assertNotNull() Can be invoked manually by running the test class or automated by using ant Junit in Netbeans You don’t need to load the jar into netbeans project. By default the jar is embedded in test libarary folder And also netbeans has test class and test case code generation menu Lets Do The Code Lets start with heating up our Netbeans and create new java project. Make a simple class having both return valued and void method. Let the return valued method do simple process for example addition or substraction. Create Unit Test Choose this menu in netbeans ◦ Tools > Create Junit Test Or just simply press Ctrl + Shift + U. A window dialogue will appear, choose suitable options. Or you can leave it as is. .

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