JOBS4TIMES jobs4timesLogo

JUNIT

Example 1

Person.java 
package com;

import java.util.logging.Logger;


public class Person {
	
	int a,b;
	Logger log = Logger.getAnonymousLogger();
	public int add(int a, int b){		
		this.a=a;
		this.b=b;
		log.info("entered value for a ="+a);
		log.info("entered value for b ="+b);
		
		return a+b;
	}
	

	public static void main(String[] args) {
		Person p=new Person();
		
		p.add(2,4);
		
	}

}
PersonTest.java 
package com;

import static org.junit.Assert.*;

import org.junit.After;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

public class PersonTest {
	
	Person p=null;

	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
	 System.out.println("setUpBeforeClass");
	}

	@AfterClass
	public static void tearDownAfterClass() throws Exception {
	 System.out.println("tearDownAfterClass");
	}

	@Before
	public void setUp() throws Exception {
	 System.out.println("setUp");
	 p=new Person();
	}

	@After
	public void tearDown() throws Exception {
	 System.out.println("tearDown");
		p=null;
	}

	@Test
	public void testAdd() {
		Assert.assertEquals(10,p.add(2,8));
	}

	@Test
	public void testMain() {
		System.out.println("main success");
	}

}
output : 
setUpBeforeClass
setUp
Dec 13, 2014 4:00:43 PM com.Person add
INFO: entered value for a =2
tearDown
Dec 13, 2014 4:00:43 PM com.Person add
INFO: entered value for b =8
setUp
main success
tearDown
tearDownAfterClass

Example 2

TestJunit.java 
package com;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

public class TestJunit {

@Test
public void testAdd(){
 String str="Junit is working fine";
 assertEquals("Junit is working fine", str);
}

}
TestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class TestRunner {

public static void main(String[] args) {
Result result=JUnitCore.runClasses(TestJunit.class);
 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }
System.out.println(result.wasSuccessful());
}//main

}

output :

true

JUnit write Tests :

EmployeeDetails.java 
package com;

public class EmployeeDetails {
	
private String name;
private int age;
private double monthlySalary;

public String getName() {
	return name;
}
public void setName(String name) {
	this.name = name;
}
public int getAge() {
	return age;
}
public void setAge(int age) {
	this.age = age;
}
public double getMonthlySalary() {
	return monthlySalary;
}
public void setMonthlySalary(double monthlySalary) {
	this.monthlySalary = monthlySalary;
}

}//class
EmpBusinessLogic.java 
package com;

public class EmpBusinessLogic {
	
public double calculateYearlySalary(EmployeeDetails empDetails){
 double yearlySalary=0;
 yearlySalary=empDetails.getMonthlySalary()*12;
 return yearlySalary;
}

public double calculateAppraisal(EmployeeDetails empDetails){
 double appraisal=0;
 if(empDetails.getMonthlySalary()<10000){
   appraisal=500;
 }
 else{
   appraisal=1000;
 }
 return appraisal;
	
}

}
EmpTestCase.java 
package com;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

public class EmpTestCase {

EmpBusinessLogic empLogic=new EmpBusinessLogic();
EmployeeDetails empDetails=new EmployeeDetails();

@Test
public void testCalculateAppraisal(){
 empDetails.setName("Ashok");
 empDetails.setAge(27);
 empDetails.setMonthlySalary(8000d);
 double appraisal=empLogic.calculateAppraisal(empDetails);
 assertEquals(500, appraisal,0.0);
}

@Test
public void testCalculateYearlySalary(){
 empDetails.setName("Ashok");
 empDetails.setAge(27);
 empDetails.setMonthlySalary(8000d);
 double salary=empLogic.calculateYearlySalary(empDetails);
 assertEquals(96000,salary,0.0);
}

}//class
EmpTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class EmpTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(EmpTestCase.class);
 
 for(Failure failure : result.getFailures()){
  System.out.println(failure.toString());
 }//for
 
 System.out.println(result.wasSuccessful());
}//main


output :

true

JUNIT using Assertion :

methods :
void assertEquals(boolean expected, boolean actual)
void assertTrue(boolean expected, boolean actual)
void assertFalse(boolean condition)
void assertNotNull(Object object)
void assertNull(Object object)
void assertSame(boolean condition)
void assertNotSame(boolean condition)
void assertArrayEquals(expectedArray, resultArray);
Ex :
AssertionTestCase.java 
package com;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.*;

import org.junit.Test;

public class AssertionTestCase {

@Test
public void testAssertions(){
 String s1=new String("abc");
 String s2=new String("abc");
 String s3=null;
 String s4="abc";
 String s5="abc";
 int i1=234;
 int i2=456; 
 String[] expectedArray={"one","two","three"};
 String[] resultArray={"one","two","three"};
 
 assertEquals(s1,s2); 
 assertTrue(i1<i2);
 assertFalse(i1>i2);
 assertNotNull(s1);
 assertNull(s3);
 assertSame(s4,s5);
 assertNotSame(s1,s2);
 assertArrayEquals(expectedArray,resultArray);	
}

}
AssertionTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class AssertionTestRunner {

public static void main(String[] args) {
Result result=JUnitCore.runClasses(AssertionTestCase.class);

 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }//for
 
 System.out.println(result.wasSuccessful());
}//main

}

Annotation :

@Test
@Before
@After
@BeforeClass
@AfterClass
@Ignore
AnnotationTestCase.java 
package com;

import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;

public class AnnotationTestCase {

@BeforeClass
public static void beforeClass(){
 System.out.println("in before class");
}

@AfterClass
public static void afterClass(){
 System.out.println("in after class");
}

@Before
public void before(){
 System.out.println("in before");
}

@After
public void after(){
 System.out.println("in after");
}

@Test
public void test(){
 System.out.println("in test");
}

@Ignore
public void ignoreTest(){
 System.out.println("in ignore test");
}

}//class
AnnotationTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class AnnotationTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(AnnotationTestCase.class);
  for(Failure failure:result.getFailures()){
   System.out.println(failure.toString());
  }//for
 System.out.println(result.wasSuccessful());
}//main

}


output:
in before class
in before
in test
in after
in after class
true

JUNIT Executing Tests

MessageApp.java 
package com;

public class MessageApp {
 private String message;
 
 public MessageApp(String message) {
	this.message=message;
}

 public String printMessage(){
  System.out.println(message);
  return message;
 }//printMessage

}
MessageTestCase.java 
package com;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

public class MessageTestCase {
String message="Hello";
MessageApp messageApp=new MessageApp(message);

@Test
public void testPrintMessage(){
	message="new word";  //--> 1
 assertEquals(message,messageApp.printMessage());
}

}//class
MessageTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class MessageTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(MessageTestCase.class);
 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }//for
 System.out.println(result.wasSuccessful());
}//main

}


output :
Hello
testPrintMessage(com.MessageTestCase): expected:<[new word]> but was:<[Hello]>
false
in the above program, if we comments line (1) the output is : true

JUNIT Test Suit

MessageUtil.java 
package com;

public class MessageUtil {
 private String message;
 
 public MessageUtil(String message) {
	this.message=message;
}

 public String printMessage(){
  System.out.println(message);
  return message;
 }
 
 public String salutationMessage(){
  message="Hi "+message;
  System.out.println(message);
  return message;	
 }

}
MessageTestCaseOne.java 
package com;

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

public class MessageTestCaseOne {
String message="Ashok";
MessageUtil messageUtil=new MessageUtil(message);

@Test
public void testPrintMessage(){
 System.out.println("inside testPrintMessage()");
 assertEquals(message,messageUtil.printMessage());
}

}//class
MessageTestCaseTwo.java 
package com;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

public class MessageTestCaseTwo {
String message="Ashok";
MessageUtil messageUtil=new MessageUtil(message);

@Test
public void testSalutationMessage(){
 System.out.println("in testSalutationTest()");
 message="Hi "+"Ashok";
 assertEquals(message,messageUtil.salutationMessage());
}

}//class
MessageTestSuit.java 
package com;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;

@RunWith(Suite.class)
@Suite.SuiteClasses({
	MessageTestCaseOne.class,
	MessageTestCaseTwo.class
 })

public class MessageTestSuit {
	
}
MessageTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class MessageTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(MessageTestSuit.class);
 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }//for
 System.out.println(result.wasSuccessful());
}//main

}



output :

inside testPrintMessage()
Ashok
in testSalutationTest()
Hi Ashok
true

JUNIT Ignore Test

MessageUtil.java 
package com;

public class MessageUtil {
 private String message;
 
 public MessageUtil(String message) {
	this.message=message;
}

 public String printMessage(){
  System.out.println(message);
  return message;
 }
 
 public String salutationMessage(){
  message="Hi!"+message;
  System.out.println(message);
  return message;	
 }

}
MessageTestCase.java 
package com;

import static org.junit.Assert.assertEquals;

import org.junit.Ignore;
import org.junit.Test;

public class MessageTestCase {
String message="Ashok";
MessageUtil messageUtil=new MessageUtil(message);

@Ignore
@Test
public void testPrintMessage(){
 System.out.println("inside testPrintMessage()");
 assertEquals(message,messageUtil.printMessage());
}

@Test
public void testSalutationMessage(){
 System.out.println("in testSalutationTest()");
 message="Hi!"+"Ashok";
 assertEquals(message,messageUtil.salutationMessage());
}

}//class
MessageTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class MessageTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(MessageTestCase.class);
 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }//for
 System.out.println(result.wasSuccessful());
}//main

}

output:

in testSalutationTest()
Hi!Ashok
true


package com;

import static org.junit.Assert.assertEquals;

import org.junit.Ignore;
import org.junit.Test;

@Ignore
public class MessageTestCase {
String message="Ashok";
MessageUtil messageUtil=new MessageUtil(message);

@Test
public void testPrintMessage(){
 System.out.println("inside testPrintMessage()");
 assertEquals(message,messageUtil.printMessage());
}

@Test
public void testSalutationMessage(){
 System.out.println("in testSalutationTest()");
 message="Hi!"+"Ashok";
 assertEquals(message,messageUtil.salutationMessage());
}

}//class
output: true

JUNIT Time Test

MessageUtil.java 
package com;

public class MessageUtil {
 private String message;
 
 public MessageUtil(String message) {
	this.message=message;
}

 public void printMessage(){
  System.out.println(message);
  while(true);
 }
 
 public String salutationMessage(){
  message="Hi!"+message;
  System.out.println(message);
  return message;	
 }

}
MessageTestCase.java 
package com;

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

public class MessageTestCase {
String message="Ashok";
MessageUtil messageUtil=new MessageUtil(message);

@Test(timeout=1000)
public void testPrintMessage(){
 System.out.println("inside testPrintMessage()");
  messageUtil.printMessage();
}

@Test
public void testSalutationMessage(){
 System.out.println("in testSalutationTest()");
 message="Hi!"+"Ashok";
 assertEquals(message,messageUtil.salutationMessage());
}

}//class
MessageTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class MessageTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(MessageTestCase.class);
 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }//for
 System.out.println(result.wasSuccessful());
}//main

}

output :

in testSalutationTest()
Hi!Ashok
inside testPrintMessage()
Ashok
testPrintMessage(com.MessageTestCase): 
    test timed out after 1000 milliseconds
false

JUNIT Exception Test

MessageUtil.java 
package com;

public class MessageUtil {
 private String message;
 
 public MessageUtil(String message) {
	this.message=message;
}

 public void printMessage(){
  System.out.println(message);
   int a=0;
   int b=1/a;
 }
 
 public String salutationMessage(){
  message="Hi!"+message;
  System.out.println(message);
  return message;	
 }

}
MessageTestCase.java 
package com;

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

public class MessageTestCase {
String message="Ashok";
MessageUtil messageUtil=new MessageUtil(message);

@Test(expected=ArithmeticException.class)
public void testPrintMessage(){
 System.out.println("inside testPrintMessage()");
  messageUtil.printMessage();
}

@Test
public void testSalutationMessage(){
 System.out.println("in testSalutationTest()");
 message="Hi!"+"Ashok";
 assertEquals(message,messageUtil.salutationMessage());
}

}//class
MessageTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class MessageTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(MessageTestCase.class);
 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }//for
 System.out.println(result.wasSuccessful());
}//main

}


output:

in testSalutationTest()
Hi!Ashok
inside testPrintMessage()
Ashok
true

JUNIT Parameterized Test

PrimeNumberChecker.java 
package com;

public class PrimeNumberChecker {

 public Boolean validate(final Integer primeNumber){
	 for(int i=2;i<(primeNumber/2);i++){
		 if(primeNumber%i==0)
			 return false;
	 }//for
	 return true;
 }//validate
}
PrimeCheckerTestCase.java 
package com;

import java.util.Arrays;
import java.util.Collection;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import static org.junit.Assert.assertEquals;

@RunWith(Parameterized.class)
public class PrimeCheckerTestCase {
	
 private Integer inputNumber;
 private boolean expectedResult;
 private PrimeNumberChecker primeNumberChecker;
 
 @Before
 public void initialize(){
  primeNumberChecker=new PrimeNumberChecker();
  System.out.println("in initialize");
 }
 
 public PrimeCheckerTestCase(Integer inputNumber,
                              boolean expectedResult){
  this.inputNumber=inputNumber;
  this.expectedResult=expectedResult;  
  System.out.println("constructor");
 }
 
 @Parameterized.Parameters
 public static Collection primeNumbers(){
	 System.out.println("In primeNumbers()");
   return Arrays.asList(new Object[][]{
	 {2,true},	 
	 {6,false},
	 {19,true},
	 {22,false},
	 {23,true}
   });	
   
 }//primeNumbers

 @Test
public void testPrimeNumberChecker(){ 
 System.out.println("parameterized No is: "+inputNumber);
 assertEquals(expectedResult,primeNumberChecker.validate(inputNumber));
} 

}//class
PrimeTestRunner.java 
package com;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class PrimeTestRunner {

public static void main(String[] args) {
 Result result=JUnitCore.runClasses(PrimeCheckerTestCase.class);
 for(Failure failure:result.getFailures()){
  System.out.println(failure.toString());
 }//for
 System.out.println(result.wasSuccessful());
}//main

}


output:

In primeNumbers()

constructor
in initialize
parameterized No is: 2

constructor
in initialize
parameterized No is: 6

constructor
in initialize
parameterized No is: 19

constructor
in initialize
parameterized No is: 22

constructor
in initialize
parameterized No is: 23

true

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