Plugin with Ant
The steps are as follows:
Downloading Apache Ant
Download Apache Ant 1.9.16-bin.zip.
Setting up Ant Environment
We need to add Apache Ant in our system variable to use the ant command in our machine.
Go to edit system and environment variables in the settings.
Click on the environment in the dialog shown below.
Click on the path under the system variables, then click edit.
Click on new and add path to the bin folder of the downloaded apache ant like shown below.
Click ok to finish setting up Ant Environment.
Sample Project
The sample project is as follows:
Project Structure
Create a new project folder named TestJunitWithAnt to start our new project.
Under TestJunitWithAnt create the following folders:
src, test, lib
Under the src folder create a new class called function.java, which is the class under test. Also, create functionTest.java which is the test code.
Under the test folder, classes built by ant will be stored.
Create a file called build.xml which we will be using to execute our program using Ant.
Downloading JUnit
Download JUnit from here.
Paste the Junit file under the lib folder.
The folder structure will look like this:
Program
Now let’s write code in our function.java. Its hello() method will simply add “Hello “ to a given string called message provided in the constructor.
public class function {
private String message;
//Constructor
public function(String message){
this.message = message;
}
// add "Hello! " to the message
public String hello(){
message = "Hello! " + this.message;
return message;
}
}
You can also try this code with Online Java Compiler
Test
Write our JUnit test code in functionTest.java.
import org.junit.Test;
import org.junit.Ignore;
import static org.junit.Assert.assertEquals;
public class functionTest {
function func = new function("world");
@Test
public void testHello() {
System.out.println("Checking if func.hello() is adding Hello! ");
String message = "Hello! world";
assertEquals(message, func.hello());
}
}
You can also try this code with Online Java Compiler
build.xml
Write the following XML code in build.xml. Build.xml will help in building our program and run using Apache Ant. We'll be using the <junit> task in Ant to execute our JUnit test cases.
<project name = "TESTJUNITWITHANT" default = "test" basedir = ".">
<property name = "testdir" location = "test" />
<property name = "srcdir" location = "src" />
<property name = "full-compile" value = "true" />
<path id = "classpath.base"/>
<path id = "classpath.test">
<pathelement location = "lib/junit-4.10.jar" />
<pathelement location = "${testdir}" />
<pathelement location = "${srcdir}" />
<path refid = "classpath.base" />
</path>
<target name = "clean" >
<delete verbose = "${full-compile}">
<fileset dir = "${testdir}" includes = "**/*.class" />
</delete>
</target>
<target name = "compile" depends = "clean">
<javac srcdir = "${srcdir}" destdir = "${testdir}"
verbose = "${full-compile}">
<classpath refid = "classpath.test"/>
</javac>
</target>
<target name = "test" depends = "compile">
<junit>
<classpath refid = "classpath.test" />
<formatter type = "brief" usefile = "false" />
<test name = "functionTest" />
</junit>
</target>
</project>
Output
Run the build.xml using ant command in terminal.
First, your code will be compiled and then the test will be executed. Since the output log is very long, a Part of the output log is shown below.
We can see that our program is compiled and successfully build. Also, our tests passed.
Must Read Apache Server
FAQs
-
How does the JUnit test work?
A JUnit test is a method contained in a class that is only used for testing. This is called a Test class. To define that a certain method is a test method, annotate it with the @Test annotation. This method executes the code under test.
-
Why is JUnit used?
JUnit is an open-source framework, which is used for writing and running tests. Provides annotations to identify test methods.
-
How do I run a JUnit test?
Right-click on the class file in the Script view, Select Run As -> JUnit Test, The class file executes.
-
Is TestNG better than JUnit?
Both TestNG and Junit are Testing frameworks used for Unit Testing. TestNG is similar to JUnit. Few more functionalities are added to it that make TestNG more powerful than JUnit.
Key Takeaways
In conclusion, Junt is a very powerful test framework that is used to test java-based applications. We have learned how to set up an Apache Ant environment.
We have built an XML file using Apache Ant and executed a test program.
If you want to explore more in JUnit, I will recommend you to go through JUnit Introduction with Eclipse, Junit Vintage Engine blogs.
Learning never stops, and to feed your quest to learn and become more skilled, head over to our practice platform Coding Ninjas Studio to practice top problems, attempt mock tests, read interview experiences, and much more.!
Happy Reading!
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