TestNG Dependent Tests

 

What Are Dependent Tests in TestNG?

TestNG allows you to create test dependencies, meaning you can specify that:

• A test method depends on another method or group

• If the depended method fails, is skipped, or is not run, the dependent method will also be skipped

Types of Dependencies in TestNG

Type	Annotation Attribute	Description
Method Dependency	dependsOnMethods	Test method runs only if other method(s) pass
Group Dependency	dependsOnGroups	Test method runs only if group(s) pass

If a test case execution depends upon successful execution of other test cases, then in this condition we can use attribute 'dependsOnMethods' in @Test annotation.

Example Java Code for method dependency

import org.testng.annotations.Test;

public class DependentTestExample {

    @Test
    public void launchApp() {
        System.out.println("App launched successfully.");
    }

    @Test(dependsOnMethods = "launchApp")
    public void login() {
        System.out.println("Logged in successfully.");
    }

    @Test(dependsOnMethods = {"login"})
    public void searchProduct() {
        System.out.println("Product searched successfully.");
    }

    @Test(dependsOnMethods = {"searchProduct"})
    public void logout() {
        System.out.println("Logged out successfully.");
    }
}

Output

App launched successfully.
Logged in successfully.
Product searched successfully.
Logged out successfully.

Note: If a Test Fails then searchProduct() and logout() will be skipped.

Example Java Code for group dependency

import org.testng.annotations.Test;

public class GroupDependencyExample {

    @Test(groups = "database")
    public void connectToDB() {
        System.out.println("✔ Database connected.");
    }

    @Test(groups = "database")
    public void fetchData() {
        System.out.println("✔ Data fetched from DB.");
    }

    @Test(dependsOnGroups = "database")
    public void generateReport() {
        System.out.println("✔ Report generated using DB data.");
    }
}

Optional Attributes

Attribute	Description
alwaysRun = true	Run test even if dependency fails
enabled = false	Disable the test
dependsOnMethods	Declare method dependencies
dependsOnGroups	Declare group dependencies

Example of attribute: alwaysRun




@Test(dependsOnMethods = "login", alwaysRun = true)
public void sendEmail() {
    System.out.println("Email sent (even if login fails).");
}