TestNG Grouping and Dependency Test

Understanding grouping the test cases in TESTNG

While running automation scripts sometimes we need to run some specific group of test. we can achieve this by grouping the test cases in TestNG like this

    @Test(groups="Regression")
for each test method we can add groups as the parameter with some name as "Regression"

Create TestNG file as GroupTest as; this has two groups basically regression and sanity

	package com.testng;
	import org.testng.annotations.Test;
	public class GroupTest {
	@Test(groups="Regression")
	public void testCaseOne()
	{
	System.out.println("Im in testCaseOne - And in Regression Group");
	}
	@Test(groups="Regression")
	public void testCaseTwo(){
	System.out.println("Im in testCaseTwo - And in Regression Group");
	}
	@Test(groups="Smoke Test")
	public void testCaseThree(){
	System.out.println("Im in testCaseThree - And in Smoke Test Group");
	}
	@Test(groups="Regression")
	public void testCaseFour(){
	System.out.println("Im in testCaseFour - And in Regression Group");
	}
	}

view raw testnggrouptest.java hosted with ❤ by GitHub

Next create grouptestng.xml file and call only regression group test cases;

	<?xml version="1.0" encoding="UTF-8"?>
	<suite name="Sample Suite">
	<test name="testing">
	<groups>
	<run>
	<include name="Regression"/>
	</run>
	</groups>
	<classes>
	<class name="com.testng.GroupTest" />
	</classes>
	</test>
	</suite>

view raw grouptestng.xml hosted with ❤ by GitHub

Note : here include tag is nothing but at run time we are including the group name and at same time if we add tag as exclude then this will exclude the test cases belonging to group "Regression"

Right click on grouptestng.xml file and run as testng suite and output should be something like this 

[TestNG] Running:
  /Users/gururaj/workspace/ManipalPro/GroupTestRun.xml

Im in testCaseFour - And in Regression Group
Im in testCaseOne - And in Regression Group
Im in testCaseTwo - And in Regression Group

===============================================
Sample Suite
Total tests run: 3, Failures: 0, Skips: 0
===============================================

Understanding dependency test in TESTNG

Sometimes, you may need to invoke methods in a Test case in a particular order or you want to share some data and state between methods. This kind of dependency is supported by TestNG as it supports the declaration of explicit dependencies between test methods.

TestNG allows you to specify dependencies either with: 

Using attributes dependsOnMethods in @Test annotation or groups, in this post we understand 

Test with single test method dependency
Test with multiple test methods dependencies
Test that depends on a group

Create a simple testng class as DependencyTestExample

	package com.test;
	import org.testng.annotations.Test;
	public class DependencyTestExample
	{
	@Test(dependsOnMethods = { "testTwo" })
	public void testOne() {
	System.out.println("Test method one");
	}
	@Test
	public void testTwo() {
	System.out.println("Test method two");
	}
	}

view raw dependencytest.java hosted with ❤ by GitHub

 

This contains two methods and testOne depends on testTwo method, so we can add dependsOnMethods parameter in Test annotation.

Right click and run as Testng Suite

Output : 

Test method two
Test method one
PASSED: testTwo
PASSED: testOne

Test with multiple test methods dependencies

Sometimes it may be required for a test method to depend upon multiple other methods. This feature is very well supported by TestNG as part of the dependency support.

	package com.test;
	import org.testng.annotations.Test;
	public class MultipleDependencyTest
	{
	@Test(dependsOnMethods = { "testTwo", "testThree" })
	public void testOne() {
	System.out.println("Test method one");
	}
	@Test
	public void testTwo() {
	System.out.println("Test method two");
	}
	@Test
	public void testThree() {
	System.out.println("Test method three");
	}
	}

view raw multipledependencytest.java hosted with ❤ by GitHub

Output : Test method three Test method two Test method one PASSED: testThree PASSED: testTwo PASSED: testOne   Test that depends on a group   Similar to dependent methods TestNG also allows test methods to depend on groups. This makes sure that a group of test methods get executed before the dependent test method. package com.test; import org.testng.annotations.Test; public class DependencyTestWithGroup { @Test(dependsOnGroups = { "test-group" }) public void groupTestOne() { System.out.println("Group Test method one"); } @Test(groups = { "test-group" }) public void groupTestTwo() { System.out.println("Group test method two"); } @Test(groups = { "test-group" }) public void groupTestThree() { System.out.println("Group Test method three"); } } view raw groupdependency.java hosted with ❤ by GitHub Output :  Group Test method three Group test method two Group Test method one PASSED: groupTestThree PASSED: groupTestTwo PASSED: groupTestOne