In the previous tutorial, I explained the Page Object Model with Selenium, Cucumber and JUnit. In this tutorial, I’ll create a BDD Framework for web application testing. I will use the Page Object Model with Selenium, Cucumber, and TestNG.
Table of Contents
- What Is Page Object Model (POM)?
- What is Cucumber?
- Dependency List
- Project Structure
- Implementation Steps
- Download and Install Java
- Setup Maven
- Install Cucumber Eclipse Plugin (Only for Eclipse)
- Create a new Maven Project
- Create source folder src/test/resources to create test scenarios in the Feature file
- Add Selenium, TestNG, and Cucumber dependencies to the project
- Add Maven Compiler Plugin and Surefire Plugin
- Create a feature file in the src/test/resources
- Create the classes for locators, actions, and utilities in src/main/java
- Create a StepDefinition class in src/test/java
- Create a Hook class in src/test/java
- Create a TestNG Cucumber Runner class in the src/test/java
- Run the tests from TestNG
- Run the tests from testng.xml
- Run the tests from Command Line
- Cucumber Report Generation
- TestNG Report Generation
What Is Page Object Model (POM)?
The Page Object model is an object design pattern in Selenium, where web pages are represented as classes, the various elements on the page are defined as variables in the class and all possible user interactions can then be implemented as methods in the class.
What is Cucumber?
Cucumber is one such open-source tool, which supports Behavior Driven Development(BDD). In simple words, Cucumber can be defined as a testing framework, driven by plain English. It serves as documentation, automated tests, and development aid – all in one.
Dependency List
- Cucumber Java – 7.18.1
- Cucumber TestNG – 7.18.1
- Java 17
- Maven – 3.9.6
- Selenium – 4.23.0
- TestNG – 7.10.2
- Maven Compiler – 3.13.0
- Maven Surefire – 3.3.1
Project Structure
Implementation Steps
Step 1- Download and Install Java
Cucumber and Selenium need Java to be installed on the system to run the tests. Click here to learn How to install Java.
Step 2 – Setup Maven
To build a test framework, we need to add a number of dependencies to the project. Click here to learn How to install Maven.
Step 3 – Install Cucumber Eclipse Plugin (Only for Eclipse)
The cucumber plugin is an Eclipse plugin that allows eclipse to understand the Gherkin syntax. When we are working with cucumber we will write the feature files that contain Feature, Scenario, Given, When, Then, And, But, Tags, Scenario Outline, and Examples. By default, eclipse doesn’t understand these keywords so it doesn’t show any syntax highlighter. Cucumber Eclipse Plugin highlights the keywords present in Feature File. Refer to this tutorial to get more detail – How to setup Cucumber with Eclipse.
Step 4 – Create a new Maven Project
To create a new Maven project, go to the File -> New Project-> Maven-> Maven project-> Next -> Enter Group ID & Artifact ID -> Finish.
Click here to learn How to create a Maven project.
Step 5 – Create source folder src/test/resources to create test scenarios in the Feature file
A new Maven Project is created with 2 folders – src/main/java and src/test/java. To create test scenarios, we need a new source folder called – src/test/resources. To create this folder, right-click on test directory ->select New ->Directory, and then it shows Maven Source Directories as resources as shown below.
Double-click on the resources directory and a new source directory under your new Maven project is created as shown in the below image.
Step 6 – Add Selenium, TestNG, and Cucumber dependencies to the project
Add below mentioned Selenium, TestNG, and Cucumber dependencies to the project.
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<cucumber.version>7.18.1</cucumber.version>
<selenium.version>4.23.0</selenium.version>
<testng.version>7.10.2</testng.version>
<apache.common.version>2.4</apache.common.version>
<maven.compiler.plugin.version>3.13.0</maven.compiler.plugin.version>
<maven.surefire.plugin.version>3.3.1</maven.surefire.plugin.version>
<maven.compiler.source.version>17</maven.compiler.source.version>
<maven.compiler.target.version>17</maven.compiler.target.version>
</properties>
<dependencies>
<dependency>
<groupId>io.cucumber</groupId>
<artifactId>cucumber-java</artifactId>
<version>${cucumber.version}</version>
</dependency>
<dependency>
<groupId>io.cucumber</groupId>
<artifactId>cucumber-testng</artifactId>
<version>${cucumber.version}</version>
<scope>test</scope>
</dependency>
<!-- Selenium -->
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>${selenium.version}</version>
</dependency>
<!-- TestNG -->
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>${testng.version}</version>
<scope>test</scope>
</dependency>
<!-- Apache Common -->
<dependency>
<groupId>org.apache.directory.studio</groupId>
<artifactId>org.apache.commons.io</artifactId>
<version>${apache.common.version}</version>
</dependency>
</dependencies>
Step 7 – Add Maven Compiler Plugin and Surefire Plugin
The compiler plugin is used to compile the source code of a Maven project. This plugin has two goals, which are already bound to specific phases of the default lifecycle:
- compile – compile main source files
- testCompile – compile test source files
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven.compiler.plugin.version}</version>
<configuration>
<source>${maven.compiler.source.version}</source>
<target>${maven.compiler.target.version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven.surefire.plugin.version}</version>
<configuration>
<includes>
<include>**/*Tests.java</include>
</includes>
</configuration>
</plugin>
</plugins>
The complete POM.xml looks like as shown below
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>POM_Cucumber_TestNG_Demo</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>POM_Cucumber_TestNG_Demo</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<cucumber.version>7.18.1</cucumber.version>
<selenium.version>4.23.0</selenium.version>
<testng.version>7.10.2</testng.version>
<apache.common.version>2.4</apache.common.version>
<maven.compiler.plugin.version>3.13.0</maven.compiler.plugin.version>
<maven.surefire.plugin.version>3.3.1</maven.surefire.plugin.version>
<maven.compiler.source.version>17</maven.compiler.source.version>
<maven.compiler.target.version>17</maven.compiler.target.version>
</properties>
<dependencies>
<dependency>
<groupId>io.cucumber</groupId>
<artifactId>cucumber-java</artifactId>
<version>${cucumber.version}</version>
</dependency>
<dependency>
<groupId>io.cucumber</groupId>
<artifactId>cucumber-testng</artifactId>
<version>${cucumber.version}</version>
<scope>test</scope>
</dependency>
<!-- Selenium -->
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>${selenium.version}</version>
</dependency>
<!-- TestNG -->
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>${testng.version}</version>
<scope>test</scope>
</dependency>
<!-- Apache Common -->
<dependency>
<groupId>org.apache.directory.studio</groupId>
<artifactId>org.apache.commons.io</artifactId>
<version>${apache.common.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven.compiler.plugin.version}</version>
<configuration>
<source>${maven.compiler.source.version}</source>
<target>${maven.compiler.target.version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven.surefire.plugin.version}</version>
<configuration>
<suiteXmlFiles>
<suiteXmlFile>testng.xml</suiteXmlFile>
</suiteXmlFiles>
</configuration>
</plugin>
</plugins>
</build>
</project>
Step 8 – Create a feature file in the src/test/resources
Create a folder with name features. Now, create the feature file in this folder. The feature file should be saved with the extension .feature. This feature file contains the test scenarios created to test the application. The Test Scenarios are written in Gherkins language in the format of Given, When, Then, And, But.
Below is an example of Test Scenarios in the feature file. I have failed one test scenario intentionally – @MissingUsername.
Feature: Login to HRM Application
Background:
Given User is on HRMLogin page "https://opensource-demo.orangehrmlive.com/"
@ValidCredentials
Scenario: Login with valid credentials
When User enters username as "Admin" and password as "admin123"
Then User should be able to login successfully and new page open
@InvalidCredentials
Scenario Outline: Login with invalid credentials
When User enters username as "<username>" and password as "<password>"
Then User should be able to see error message "<errorMessage>"
Examples:
| username | password | errorMessage |
| Admin | admin12$$ | Invalid credentials |
| admin$$ | admin123 | Invalid credentials |
| abc123 | xyz$$ | Invalid credentials |
@MissingUsername @FailedTest
Scenario: Login with blank username
When User enters username as " " and password as "admin123"
Then User should be able to see a message "Required1" below Username
Step 9 – Create the classes for locators, actions, and utilities in src/main/java
Create folders – actions, locators, and utils in src/main/java.
Create a Java Class for each page where define WebElements as variables using Annotation @FindBy. Create another Java class that contains methods for actions performed on WebElements. Here, I’m going to create 2 classes for locators – LoginPageLocators and HomePageLocators as well as 2 classes for actions – LoginPageActions and HomePageActions
The Locator class contains WebElements which are identified by @FindBy annotation as shown below:-
@FindBy(name = "txtUsername")
WebElement userName;
Action class contains methods for the action to be performed on the web elements identified in the locator class.
The initElements is a static method of PageFactory class that is used to initialize all the web elements located by @FindBy annotation. Only after the WebElements are initialized, they can be used in the methods to perform actions.
public Login(WebDriver driver) {
this.driver = driver;
// This initElements method will create all WebElements
PageFactory.initElements(driver, this);
}
Below is the sample code of the LoginPageLocators.
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
public class LoginPageLocators {
@FindBy(name = "username")
public WebElement userName;
@FindBy(name = "password")
public WebElement password;
@FindBy(xpath = "//*[@id='app']/div[1]/div/div[1]/div/div[2]/div[2]/form/div[1]/div/span")
public WebElement missingUsernameErrorMessage;
@FindBy(xpath = "//*[@id='app']/div[1]/div/div[1]/div/div[2]/div[2]/form/div[3]/button")
public WebElement login;
@FindBy(xpath = "//*[@id='app']/div[1]/div/div[1]/div/div[2]/div[2]/div/div[1]/div[1]/p")
public WebElement errorMessage;
}
Below is the sample code for the HomePageLocators.
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
public class HomePageLocators {
@FindBy(xpath = "//span[@class='oxd-topbar-header-breadcrumb']/h6")
public WebElement homePageUserName;
}
Create the action classes for each web page. These action classes contain all the methods needed by the step definitions. In this case, I have created 2 action classes – LoginPageActions, HomePageActions
LoginPageActions
import org.example.locators.LoginPageLocators;
import org.example.utils.HelperClass;
import org.openqa.selenium.support.PageFactory;
public class LoginPageActions {
LoginPageLocators loginPageLocators = null;
public LoginPageActions() {
this.loginPageLocators = new LoginPageLocators();
PageFactory.initElements(HelperClass.getDriver(),loginPageLocators);
}
// Get the error message when username is blank
public String getMissingUsernameText() {
return loginPageLocators.missingUsernameErrorMessage.getText();
}
// Get the Error Message
public String getErrorMessage() {
return loginPageLocators.errorMessage.getText();
}
public void login(String strUserName, String strPassword) {
// Fill user name
loginPageLocators.userName.sendKeys(strUserName);
// Fill password
loginPageLocators.password.sendKeys(strPassword);
// Click Login button
loginPageLocators.login.click();
}
HomePageActions
import org.example.locators.HomePageLocators;
import org.example.utils.HelperClass;
import org.openqa.selenium.support.PageFactory;
public class HomePageActions {
HomePageLocators homePageLocators = null;
public HomePageActions() {
this.homePageLocators = new HomePageLocators();
PageFactory.initElements(HelperClass.getDriver(),homePageLocators);
}
// Get the User name from Home Page
public String getHomePageText() {
return homePageLocators.homePageUserName.getText();
}
}
Create a Helper class where we are initializing the web driver, initializing the web driver wait, defining the timeouts, and creating a private constructor of the class, it will declare the web driver, so whenever we create an object of this class, a new web browser is invoked.
package com.example.utils;
import java.time.Duration;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import io.github.bonigarcia.wdm.WebDriverManager;
import org.openqa.selenium.chrome.ChromeOptions;
public class HelperClass {
private static HelperClass helperClass;
private static WebDriver driver;
public final static int TIMEOUT = 5;
private HelperClass() {
WebDriverManager.chromedriver().setup();
ChromeOptions options = new ChromeOptions();
options.addArguments("--start-maximized");
driver = new ChromeDriver(options);
driver.manage().timeouts().implicitlyWait(Duration.ofSeconds(TIMEOUT));
}
public static void openPage(String url) {
driver.get(url);
}
public static WebDriver getDriver() {
return driver;
}
public static void setUpDriver() {
if (helperClass==null) {
helperClass = new HelperClass();
}
}
public static void tearDown() {
if(driver!=null) {
driver.quit();
}
helperClass = null;
}
}
Step 10 – Create a StepDefinition class in src/test/java
Create a Java Class called Definition where we will create the Test Code related to the Given, When, Then of Feature file in src/test/java.
Now, we need to create the Step Definition of the Feature File – LoginPageDefinitions.java.
import io.cucumber.java.en.Given;
import io.cucumber.java.en.Then;
import io.cucumber.java.en.When;
import org.example.actions.HomePageActions;
import org.example.actions.LoginPageActions;
import org.example.utils.HelperClass;
import org.testng.Assert;
public class LoginPageDefinitions {
LoginPageActions objLogin = new LoginPageActions();
HomePageActions objHomePage = new HomePageActions();
@Given("User is on HRMLogin page {string}")
public void loginTest(String url) {
HelperClass.openPage(url);
}
@When("User enters username as {string} and password as {string}")
public void goToHomePage(String userName, String passWord) {
// login to application
objLogin.login(userName, passWord);
}
@Then("User should be able to login successfully and new page open")
public void verifyLogin() {
// Verify home page
Assert.assertTrue(objHomePage.getHomePageText().contains("Dashboard"));
}
@Then("User should be able to see error message {string}")
public void verifyErrorMessage(String expectedErrorMessage) {
// Verify error message
Assert.assertEquals(objLogin.getErrorMessage(),expectedErrorMessage);
}
@Then("User should be able to see a message {string} below Username")
public void verifyMissingUsernameMessage(String message) {
Assert.assertEquals(objLogin.getMissingUsernameText(),message);
}
}
Step 11 – Create a Hook class in src/test/java
Create the hook class that contains the Before and After hook to initialize the web browser and close the web browser. I have added the code to take the screenshot of the failed scenario in @After Hook.
Below is the code for the Hooks class.
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import com.example.utils.HelperClass;
import io.cucumber.java.After;
import io.cucumber.java.Before;
import io.cucumber.java.Scenario;
public class Hooks {
@Before
public static void setUp() {
HelperClass.setUpDriver();
}
@After
public static void tearDown(Scenario scenario) {
//validate if scenario has failed
if(scenario.isFailed()) {
final byte[] screenshot = ((TakesScreenshot) HelperClass.getDriver()).getScreenshotAs(OutputType.BYTES);
scenario.attach(screenshot, "image/png", scenario.getName());
}
HelperClass.tearDown();
}
}
Step 12 – Create a TestNG Cucumber Runner class in the src/test/java
Cucumber needs a TestRunner class to run the feature files. It is suggested to create a folder with the name of the runner in the src/test/java directory and create the Cucumber TestRunner class in this folder. Below is the code of the Cucumber TestRunner class.
Below is the code for CucumberRunnerTests class.
import io.cucumber.testng.AbstractTestNGCucumberTests;
import io.cucumber.testng.CucumberOptions;
@CucumberOptions(tags = "", features = "src/test/resources/features/LoginPage.feature", glue = "com.example.definitions",
plugin = {})
public class CucumberRunnerTests extends AbstractTestNGCucumberTests {
}
Note:- The name of the Runner class should end with Test otherwise we can’t run the tests using Command Line.
Step 13 – Run the tests from TestNG
You can execute the test script by right-clicking on TestRunner class -> Run As TestNG. (Eclipse)
In the case of the IntelliJ project, right-click on the runner class and select Run ‘CucumberRunnerTests’.
The output of the above program is
Step 14 – Run the tests from testng.xml
Create a testng.xml as shown below and run the tests as TestNG.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd">
<suite name="Suite">
<test name="Cucumber with TestNG Test">
<classes>
<class name="com.example.runner.CucumberRunnerTests"/>
</classes>
</test> <!-- Test -->
</suite> <!-- Suite -->
The testng.xml is highlighted below:
Step 15 – Run the tests from Command Line
Run the below command in the command prompt to run the tests and to get the test execution report.
mvn clean test
The output of the above program is
Step 16 – Cucumber Report Generation
To get Cucumber Test Reports, add cucumber.properties under src/test/resources and add the below instruction in the file.
cucumber.publish.enabled=true
Below is the image of the Cucumber Report generated using the Cucumber Service.
In the above example, as we can see, one of the tests has failed. So, when a test fails, we have written the code to take a screenshot of the failed step. The Attached Image shows the image of the failed test. You can click on that to see the screenshot.
Step 17 – TestNG Report Generation
TestNG generates various types of reports under the target->surefire-reports folder like emailable-report.html, index.html, testng-results.xml.
We are interested in the “emailable-report.html” report. Open “emailable-report.html“, as this is an HTML report, and open it with the browser. The below image shows emailable-report.html.
emailable-report.html
Index.html
TestNG also produces an “index.html” report. The below image shows the index.html report.
The complete code can be found on GitHub – vibssingh/Page-Object-Model-with-Cucumber-Selenium-and-TestNG.
That’s it! Congratulations on making it through this tutorial and hope you found it useful! Happy Learning!!
Additional Tutorials
QA Automation Expert 