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Introduction of TestNG:
TestNG is a testing framework inspired by JUnit and NUnit. It contains some new features that make it more powerful and easier to use.
TestNG is designed to cover testing categories like unit, functional, integration, end-to-end, etc.
Advantages of TestNG:
Manages test suites and test cases
Helps in prioritizing test cases
Helps in a grouping of tests
Parallel execution
Reporting
Download and install IntelliJIDEA:
Steps to create a project:
Open IntelliJ IDEA
Create a new Java Project
Download the TestNG dependency .jar file from the MVN Repository website
Save the TestNG dependency .jar file into the driver folder under the C drive
Select your project in IntelliJ click on File, go to Project Structure
Under Project Structure click on Modules, go to the Dependencies tab, click on the + button
Select Jars and Directories and select a path of the TestNG.jar file click Ok
Click on added testng.jar file select compile, Click on Apply, and Ok.
Now TestNG.jar has been added to your project's external libraries.
Now create a sample test case:
Right-click on the src folder to create a new Java Class named FirstTestCase
Add needed dependencies,
1. slf4j simple
2. slf4j API
3. jcommander
import org.testng.reporters.XMLConstants;
public class FirstTestCase { @Test(priority = 1) void setup(){ System.out.println("This is setup test"); } @Test(priority = 2) void login(){ System.out.println("This is login test"); } @Test(priority = 3) void tearDown(){ System.out.println("This is tearDown test"); }}TestNG Project does not have a main method it executes based on the priority of the methods
TestNG test cases execute with the @Test annotation
By default they are executed in alphabetical order, if you want to execute them in any particular order then you need to give priority to each test case
Create one more test case for upcoming topics:
import org.testng.annotations.Test;public class SecondTestCase { @Test(priority = 1) void setup() { System.out.println("Opening Browser"); } @Test(priority = 3) void searchCustomer() { System.out.println("This is searchCustomer test"); } @Test(priority = 2) void addCustomer() { System.out.println("This is addCustomer test"); } @Test(priority = 4) void tearDown() { System.out.println("Closing Browser"); }}Steps to convert your project into testng and Run through testng.xml:
file-->Settings-->Pluggins--> Search Create TestNG XML--> Install-->Accept-->Ok
Restart IntelliJIDEA
After installation of the plugin, you can see the Creat testNG XML option if you right-click on your project and select that it will show you the path of the testng.xml file
Refresh and Open testng.xml --> Right click on project -->reformat code
Under <test> tag --> add <classes> tag --> create <class>
In the class tag, you need to add the test case names that you want to execute
(At a time multiple test cases can be executed with testng.xml)
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd"><suite name="All Test Suite"> <test verbose="2" preserve-order="true" name="C:/Users/sagar/IdeaProjects/Demo"> <classes> <class name="FirstTestCase"/> <class name="SecondTestCase"/> </classes> </test></suite>:testng.xml
Save testng.xml, Rightclick and select run testng.xml
@Note: To see the testng report in IntelliJIDEA you need to do some configurations,
Select the project folder --> right-click on the Run menu button from the top --> edit configurations -->
Select the testng.xml file --> go to Listeners --> click on + button --> search and select org.testng.reporters.EmailableReporter2 and org.testng.reporters.FailedReporter --> Apply --> Ok--> select right-click on project --> Reload from disc --> Run testng.xml --> your testng report is generated under the test-output folder
Annotations in TestNG:
An annotation is a tag that provides additional information about the class or method. It is represented by the ‘@’ prefix.
TestNG uses these annotations to help in making a robust framework.
With the TestNG Annotations, we can control the sequence and priority of the methods which allows us to execute Java code before and after a certain point
Annotations are placed over the methods with the symbol @.
All methods of test cases must be tagged with @Test annotation
Workflow of annotations:
To understand the detailed flow of the annotations follow the example given below,
Example: TC1.java
import org.testng.annotations.*;public class TC1 { @BeforeClass void beforeClass(){ System.out.println("This will execute before the class..."); } @AfterClass void afterClass(){ System.out.println("This will execute After the class..."); } @BeforeMethod void beforeMethod(){ System.out.println("This will execute before each method..."); } @AfterMethod void afterMethod(){ System.out.println("This will execute After each method..."); } @Test void test1(){ System.out.println("This is test1..."); } @Test void test2(){ System.out.println("This is test2..."); } @BeforeTest void beforeTest(){ System.out.println("This will execute before the Test..."); } @AfterTest void afterTest(){ System.out.println("This will execute after the Test..."); }}TC2.java
import org.testng.annotations.*;public class TC2 { @BeforeClass void beforeClass(){ System.out.println("This will execute before the class..."); } @AfterClass void afterClass(){ System.out.println("This will execute After the class..."); } @BeforeMethod void beforeMethod(){ System.out.println("This will execute before each method..."); } @AfterMethod void afterMethod(){ System.out.println("This will execute After each method..."); } @Test void test3(){ System.out.println("This is test3..."); } @Test void test4(){ System.out.println("This is test4..."); } @BeforeSuite void beforeSuite(){ System.out.println("This will execute Before the Test Suite..."); } @AfterSuite void afterSuite(){ System.out.println("This will execute After the Test Suite..."); }}testng.xml:
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd"><suite name="All Test Suite"> <test name="annotationdemo"> <classes> <class name="TC1"> <methods> <include name="test1"/> <include name="test2"/> </methods> </class> <class name="TC2"> <methods> <include name="test3"/> <include name="test4"/> </methods> </class> </classes> </test></suite>
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