Programming Tips - Java: How do I use junit in my code?

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 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); } }