Testng exception test [go]

The testng trace Exception Handling Code provides an option. You can test whether the code throws an exception or does not throw the exception. @ Test annotation expectedexceptions parameters are used together. Now let's take a look at the @ test (expectedexceptions) action.

Create a class

• Create a Java class to test the messageutil. Java in c: \> testng_workspace

   

• Add an error condition to the printmessage () method.

/** This class prints the given message on console.*/public class MessageUtil {   private String message;   //Constructor   //@param message to be printed   public MessageUtil(String message){      this.message = message;    }   // prints the message   public void printMessage(){      System.out.println(message);      int a =0;      int b = 1/a;   }      // add "Hi!" to the message   public String salutationMessage(){      message = "Hi!" + message;      System.out.println(message);      return message;   }   }

Create test case class

• Create a Java test class: expectedexceptiontest. java.

• The expected exceptions of the added arithmeticexception and testprintmessage () test cases.

Create a Java class file named expectedexceptiontest. Java in c: \> testng_workspace

import org.testng.Assert;import org.testng.annotations.Test;public class ExpectedExceptionTest {    String message = "Manisha";    MessageUtil messageUtil = new MessageUtil(message);       @Test(expectedExceptions = ArithmeticException.class)    public void testPrintMessage() {        System.out.println("Inside testPrintMessage()");             messageUtil.printMessage();        }   @Test   public void testSalutationMessage() {      System.out.println("Inside testSalutationMessage()");      message = "Hi!" + "Manisha";      Assert.assertEquals(message,messageUtil.salutationMessage());   }}  

Create test run

Create testng. xml and run the test case in c: \> testng_workspace.

 

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" ><suite name="Suite1">   <test name="test1">       <classes>      <class name="ExpectedExceptionTest" /></classes>   </test></suite>

Compile the messageutil test case class using javac

 

C:\TestNG_WORKSPACE>javac MessageUtil.java TestJunit.java  

Now, run the test run, which runs the test cases defined in the provided test case class.

 

C:\TestNG_WORKSPACE>java -cp "C:\TestNG_WORKSPACE" org.testng.TestNG testng.xml  

Verify the output. Testprintmessage () will pass the test.

 

Inside testPrintMessage()ManishaInside testSalutationMessage()Hi!Manisha===============================================Suite1Total tests run: 2, Failures: 0, Skips: 0===============================================  

Testng exception test [go]