Test ng tutorial

TestNG is a testing framework developed in the lines of JUnit and
NUnit, however it introduces some new functionalities that make it
more powerful and easier to use.
TestNG is designed to cover all categories of tests − unit, functional,
end-to-end, integration, etc., and it requires JDK 5 or higher.

What is TestNG?
 TestNG is an open source automated testing
framework; where NG meansNext Generation. TestNG
is similar to JUnit (especially JUnit 4), but it is not a
JUnit extension. It is inspired by JUnit. It is designed to
be better than JUnit, especially when testing
integrated classes. The creator of TestNG is Cedric
Beust.

TestNG Features
 Supports annotations.
 TestNG uses more Java and OO features.
 Supports testing integrated classes (e.g., by default, no need to
create a new test class instance for every test method).
 Separates compile-time test code from run-time
configuration/data info.
 Flexible runtime configuration.
 Introduces ‘test groups’. Once you have compiled your tests, you
can just ask TestNG to run all the "front-end" tests, or "fast",
"slow", "database" tests, etc.
 Supports Dependent test methods, parallel testing, load testing,
and partial failure.
 Flexible plug-in API.
 Support for multi threaded testing.

procedure of the TestNG test API methods with an
example.
 import org.testng.annotations.Test;
 import org.testng.annotations.BeforeMethod;
 import org.testng.annotations.AfterMethod;
 import org.testng.annotations.BeforeClass;
 import org.testng.annotations.AfterClass;
 import org.testng.annotations.BeforeTest;
 import org.testng.annotations.AfterTest;
 import org.testng.annotations.BeforeSuite;
 import org.testng.annotations.AfterSuite;
 public class TestngAnnotation {
 // test case 1
 @Test
 public void testCase1() {
 System.out.println("in test case 1");
 }
 // test case 2
 @Test
 public void testCase2() {
 System.out.println("in test case 2");
 }
 @BeforeMethod
 public void beforeMethod() {
 System.out.println("in beforeMethod");
 }
 @AfterMethod
 public void afterMethod() {
 System.out.println("in afterMethod");
 }

 @BeforeClass
 public void beforeClass() {
 System.out.println("in beforeClass");
 }
 @AfterClass
 public void afterClass() {
 System.out.println("in afterClass");
 }
 @BeforeTest
 public void beforeTest() {
 System.out.println("in beforeTest");
 }
 @AfterTest
 public void afterTest() {
 System.out.println("in afterTest");
 }
 @BeforeSuite
 public void beforeSuite() {
 System.out.println("in beforeSuite");
 }
 @AfterSuite
 public void afterSuite() {
 System.out.println("in afterSuite");
 }

 create the
file testng.xml in C:>TestNG_WORKSPACE to execute
annotations.
 <?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="TestngAnnotation"/> </classes> </test>
</suite>Compile the Test case class using javac.
 C:TestNG_WORKSPACE>javac TestngAnnotation.java
 Now, run the testng.xml, which will run the test case
defined in the provided Test Case class.
 C:TestNG_WORKSPACE>java org.testng.TestNG
testng.xml

 Verify the output.
 in beforeSuite
 in beforeTest
 in beforeClass
 in beforeMethod
 in test case 1
 in afterMethod
 in beforeMethod
 in test case 2 in
 afterMethod in
 afterClass in
 afterTest I
 n afterSuite =============================================== Suite
Total tests run: 2, Failures: 0, Skips: 0

 Based on the above output, the execution procedure is as
follows:
 First of all, beforeSuite() method is executed only once.
 Lastly, the afterSuite() method executes only once.
 Even the methods beforeTest(), beforeClass(), afterClass(),
and afterTest() methods are executed only once.
 beforeMethod() method executes for each test case but
before executing the test case.
 afterMethod() method executes for each test case but after
executing the test case.
 In between beforeMethod() and afterMethod(), each test
case executes.

TestNG Hello World Example
 A classic example, show you how to get started with TestNG
unit test framework.
 Tools used :
 TestNG 6.8.7
 Maven 3
 Eclipse IDE
 1. TestNG Dependency
 Add TestNG library in the pom.xml.
 pom.xml
 <dependency> <groupId>org.testng</groupId>
<artifactId>testng</artifactId> <version>6.8.7</version>
<scope>test</scope> </dependency>

 2. TestNG Example
 Review a simple class, has a method to return a fixed
email “feedback@yoursite.com”.
 RandomEmailGenerator.java
 package com.mkyong.testng.project.service.email;
import org.springframework.stereotype.Service; public
class RandomEmailGenerator { public String
generate() { return "feedback@yoursite.com"; } }

Create a test case like this :
 TestHelloWorld.java
 package com.mkyong.testng.examples.helloworld; import
org.testng.Assert;
 import org.testng.annotations.Test;
 import
com.mkyong.testng.project.service.email.RandomEmailGenerator;
 public class TestHelloWorld {
 @Test() public void testEmailGenerator() {
 RandomEmailGenerator obj = new RandomEmailGenerator(); String
email = obj.generate();
 Assert.assertNotNull(email);
 Assert.assertEquals(email, "feedback@yoursite.com");
 }
 }

Test ng tutorial

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Test ng tutorial