TestNG @BeforeGroups Annotations

@BeforeGroups is one of the TestNG Annotations. When you annotate a method with @BeforeGroups, TestNG ensures that this method is invoked before any test method belonging to the specified groups is executed. This annotation allows developers to specify various actions to be taken before all the methods of the current group within a class finish their execution.

Let's understand the @BeforeGroups annotation through an example.

Step 1: In a Maven Project, create a TestNG Class that contains @BeforeGroups.

Before_Group.Java

Now, let's explain what this code does:

Package Declaration: The code is in the com.geeksforgeeks.test package.

Imports: The code imports annotations from the TestNG framework (org.testng.annotations.BeforeGroups and org.testng.annotations.Test).

Before_Group Class: This is the main test class.

setUpAuthentication Method (@BeforeGroups(groups = {"authentication"})):

• This method is annotated with @BeforeGroups, indicating that it should run before any test method belonging to the specified group.
• The groups = {"authentication"} parameter specifies that this setup method is associated with the "authentication" group.
• Inside this method, it prints "Database setup complete for authentication tests." to indicate that the database setup for authentication tests is complete.

Test Methods (@Test(groups = {"authentication"})):

• Each test method is annotated with @Test, indicating that it is a test case.
• All test methods are associated with the "authentication" group using groups = {"authentication"}.
• There are three test methods: testLogin(), testSignup(), and testSignout().
• Each test method prints a message indicating the action being tested.

Step 2: Now, we create the AnnotationsTest.xml file to configure the Before_Groups.Java.

Step 3: Run the AnnotationsTest.xml. Right click on the AnnotationsTest.xml file, move the cursor down to Run As and then click on the TestNG Suite.