Date: 2014oct29 Language: Java Product: junit Q. Java: How do I use junit in my code? A. First you need to install it. On an a RedHat/Fedora/CentOS box that is:

dnf install junit

Next, add the .jar to your compile classpath. If you are using ant:

<path id="master-classpath"> <fileset dir="/usr/share/java"> ... <include name="junit.jar"/> </fileset> </path>

Make your first test code, in a file called FirstTest.java Add these imports:

import static org.junit.Assert.*; import org.junit.*;

Here is the remainder of the class:

// Needs to be public public class FirstTest { // Needs one constructor that takes no parameters public FirstTest() { } // Use the @Test annotation and call it should* @Test public void shouldDoSomething() { // Do some tests... int i = 3; // Use the assert* methods assertEquals(3, i); assertNotNull(i); assertTrue(i == 3); } }