Create a Java class & Test Class

This section contains the detail about how to Create a Java class & Test Class

Create a Java class & Test Class

Create a package "devmanuals.junit " first & then the below class inside it :

package devmanuals.junit;

public class MyClass {
public int multiply(int x, int y) {
return x * y;
}
}

Select your new class, right mouse click and select New ->others-->(Inside JUnit folder)JUnit Test case, following window will appear :

Click next & select the methods ,you want to test, as follows :

• Click 'Finish'. A Class 'MyClassTest.java' will open automatically in front.

• This Class "MyClassTest.java" is automatically created by eclipse to test your code.

• Given below the automatically generated code :

package devmanuals.junit;

import static org.junit.Assert.*;

import org.junit.Test;

public class MyClassTest {

@Test
public void testMultiply() {
fail("Not yet implemented");
}

}

• You need to edit this code to make it testable as given in the next slide :

package devmanuals.junit;

import static org.junit.Assert.*;

import org.junit.Test;

public class MyClassTest {

@Test
public void testMultiply() {
MyClass tester = new MyClass();
assertEquals(50, tester.multiply(10, 5));
}
}

• The "assertEquals" method compares expected value with actual value..

Download Source Code