TestNG Installation

What is TestNG?

TestNG (NG stands for "Next Generation") is an open-source testing framework designed to simplify a broad range of testing needs, from unit testing to integrated and end-to-end testing, particularly for the Java ecosystem.

TestNG's as a tool centers on providing a powerful, flexible, and structured environment for running tests. It addresses the limitations of older frameworks by offering features that make writing and managing complex test scenarios easier.

TestNG Installation

The installation process for TestNG framework is essentially about establishing the necessary dependencies and configuration within a project environment. Since TestNG is primarily used with the Java ecosystem, its installation theory centers on the integration with development tools.

Below are the steps showing how you can install Testng on different popular IDEs that is Eclipse, IntelliJ IDEA, and for use with Maven/Gradle projects.

Below are methods used for installation of TestNG framework for Eclipse and Intelli J Idea IDEs.

Please have look for each of the method and install in your machine.

1. Installing TestNG in Eclipse

Method a: Using Eclipse Marketplace

Open Eclipse.
Go to Help → Eclipse Marketplace.
In the Find box, type TestNG.
Click Go and find TestNG for Eclipse.
Click Install, accept the license, and finish.
Restart Eclipse.

Verify Installation:

Right-click on your project → New → Other → Search for TestNG Class.
You should also see a TestNG tab in the menu bar.

2. Installing TestNG in IntelliJ IDEA

Method a: Enable Built-in Support

Open IntelliJ IDEA.
Go to File → Project Structure.
Select Modules → Dependencies.
Click + → Select Library → Choose From Maven.
Type: org.testng:testng:7.9.0
Click OK to download and add to your project.

Method b: Add to Maven pom.xml

<dependency>
  <groupId>org.testng</groupId>
  <artifactId>testng</artifactId>
  <version>7.9.0</version>
  <scope>test</scope>
</dependency>

IntelliJ will auto-download the dependency.

Verify Installation:

Right-click a class → Run as TestNG Test.
Check Run Configurations → You should see TestNG.

3. Using TestNG with Gradle Projects

Add to `build.gradle`:

dependencies {
    testImplementation 'org.testng:testng:7.9.0'
}

test {
    useTestNG()
}

Run:

gradle test