Question

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Start of Checkpoint 25 The Task Add the following class to the Practical04 project. public class Prac4 public static int max3 (int numl, int num2, int num3) return-1; It contains a method stub called max3 which is supposed to return the largest of its three integer parameters. For example, int st Prac4.max3 (9,3, 4) System.out.println (st); // outputs "9" (without the quotes) Do not change the implementation of the max3 method just yet. Create the appropriate JUnit tests for the method. HINT: to create the JUnit tests in NetBeans, first save your source file, then right-click on the project icon and select New -> Other and choose Unit Tests from the Categories list and Test for Existing Class from the File Types list. As shown belovw New F L Choose ie Type de Types: Categories Swing Gu Forms Test Suite TestNG Test Case AWT GU Unit Tests Persetence Descrigtion create憋舂縻pie An褱te吠cose for testng method, ef ㅎ single class Click Next 2 Exsting Cass To Test Test Packages Leves Geserated Code Source Code Tast Fiselz Package Privete Test Clees itelizer Clais Pindlic Hap For the "Class to Test" select Browse and select Prac4 from the Practical04 package Click Finish. Netbeans may prompt for which version of JUnit to use: Select JUnit 4.x. NOTE: you may be prompted to install a JUnit Package or you might not be prompted to select a JUnit version (as your version of NetBeans might have a different configuration). See you demonstrator for assistance. NOTE: The next time you create a test you can just select New->Test for Existing Class... COMP2741/COMP8741 Practical 4, Checkpoints 25-32 NetBeans will create a test class called Prac4Test in "Test Packages". Note that JUnit tests generally do not print out the result of calling a method. They typically store the value in a variable and compare it with an expected result using one of the assert?? methods from the org.junit.Assert. classes. The test code generated by NetBeans (which you will need to add additional tests to) has this structure. Add more methods with the @Test annotation to comprehensively test the expected output of max3 Do not change the implementation of the max3 method just yet. To run your tests, right-click on the class Prac4 and select Test File. Show your code to a demonstrator and be prepared to explain why it is correct and why your tests are appropriate and comprehensive. At this point your method stub should fail most the tests. This completes checkpoint 25.

Answer 1

//step 1

File Edit View Navigate Source Refactor Run Debug Profile Team Tools Window Help ·Search (Ctrl+0 <default config> ava PizzaPriceCalculation.java xige] Prac4.java x Projects XFiles Services New Folder Java Clas.. Build e implementation JFrame Form... Clean and Build od yet Java Package... rn the largest among t Clean Java Interface... Generate Javadoc JPanel Form... Entity Class.. Entity Classes from Database.. 오 web Service Client Run nt max3 (int numl, int r- Debug Profile Test Alt+F6 Other... Run Selenium Tests 13 Set Configuration Open Required Projects Prac4 Close Members 曰 Pra Rename... Move... Copy... Delete Delete Find... Ctrl+F

step2

New File Choose File Type Steps Choose File Type 1. Project: max3 Filter: File Types: Categories: Unit Test Java Ju Test for Existing Class Ju Test Suite Swing GUI Forms JavaBeans Objects AWT GUI Forms Unit Tests ME TestNG Test Case N TestNG Test Suite Web JavaServer Faces Struts Spring Framework Description: Creates an empty JUnit test case < Back Next >

/**
* do not change the implementation
* of the max3 method yet
* supposed to return the largest among three numbers
*/
public class Prac4 {
  
public static int max3(int num1,int num2,int num3)
{
return -1;
}
}

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

/**
*
* @author
*/
public class Prac4Test {
@Test
  
public void test1()
{
int st = Prac4.max3(9, 3, 4);
assertEquals("The output must be 9. ",9,st);
  
  

}
@Test
  
public void test2()
{
int st = Prac4.max3(10, 23, 14);
assertEquals("The output must be 23. ",23,st);
  
  

}
}

//output

Tests passed: 0.00 % No test passed, 2 tests failed. (0.234 s) Prac4Test Failed e-4, test1 Failed: The output must be 9. expected: <9> but was:<-1> The output must be 9. expected: <9> but was:<-1> junit.framework.AssertionFailedError at Prac4Test.test1(Prac4Test.java: 17) B:22'> test2 Failed: The output must be 23. expected:<23 > but was: <-1> The output must be 23. expected: <23>but was:<-1> junit.framework.AssertionFailedError at Prac4Test.test2 (Prac4Test.java:27)

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