End to End (E2E) Testing in Cucumber

Cucumber is a powerful tool for end-to-end (E2E) testing that apply Behavior-Driven Development (BDD) to bridge the gap between technical and non-technical stakeholders.

By writing test scenarios in unpatterned English (Gherkin syntax), teams can see open, collaborative, and automatize testing across web, mobile, and API application.

This article explores how to use BDD test mechanization to perform E2E testing with Cucumber.

What is E2E testing?

E2E testing stands for, is a method to ensure that the application is working as anticipate. The main purpose behind the implementation of E2E testing is to test from the existent user ’ s perspective. Software systems are made of complex and coordinated subsystem. Therefore, E2E essay prevents the entire system from crack-up because of the failure of one subsystem.

E2E testing is now widely espouse in several engineering due to numerous benefits such as less expensive, bug detection, the correctness of the application, and many more. E2E try helps in achieving greater success for the application by testing it under. Moreover, it would let QAs know how a failing test would impact the user.

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What is Cucumber Framework?

is a testing tool that supports (Behavior Driven Development). It countenance the exploiter to indite tests in the Gherkin language (easy descriptive English language), which anyone can understand. This helps in bringing more collaborators to one project, thus improving the lineament of the employment. Cucumber framework uses Ruby programming language, however for development and supports several other languages such as JavaScript, Java, C #, and more.

Introduction to BDD (Behavior Driven Development)

BDD (Behavior Driven Development) is a proficiency where a test is written in an easy language, quetch English, which anyone could understand without any technical knowledge. This technique has many welfare while developing and testing.

Some features of the BDD proficiency are as follows:

• It further higher coaction, as people without any technical knowledge could besides be utilitarian in writing exam. This help in filling the gap between the developer, business analyst, and early stakeholders of the task.
• Gherkin words uses plain English, which helps in increasing the readability of the tests, thus, ultimately increase the calibre of write tests.

Why use Selenium for End-to-End Testing?

Selenium is an open-source tool that is useful in automating exam in web browser. It supports several programming languages such as C #, Java, JavaScript, NodeJs, PHP, and many more.

A few benefits of incorporating Selenium in our examination are:

• Selenium mechanization test could be implemented across multiple operating systems and program lyric.
• It gives a user-friendly interface that assist in faster development, customization, and manipulation at an advanced level.
• It has strong community support, which makes it a better choice.

Implementation of Cucumber End to End Testing

Understand Cucumber E2E testing with a practical illustration. Perform a exam in which the browser first navigates to a URL, validates something there, and die the browser. This simple test will aid us read the basic concepts of E2E testing with Cucumber.

Step 1: Install IDE and Set up Java

• Install Eclipse IDE, however, you can use any IDE of your choice.
• Install Java. To ensure that Java is install on your system, run a quick bidding in the terminus to check the Java version.

Java -version

Step 2: Install Selenium and Cucumber

• Install Selenium Webdriver
• Install Cucumber

Step 3: Create a new Maven Project

Install Maven Plugin.However, in the latest versions of Eclipse, it comes installed already.

Step 4: Add Maven dependencies and Selenium to your project

In this footstep, you have to add respective dependencies. Navigate to thepom.xmlfile in the folder structure and add the dependency mentioned below. These dependencies are available in theMaven Repository.

• Cucumber Java
• Cucumber JUnit
• JUnit
• Selenium Java

Step 5: Create a feature file

A feature file is a file where you will describe your tests in a Gherkin language (Like English). Navigate tosrc/test/resourcesin the folder structure and so create a lineament booklet. Also, add a characteristic file in the feature folder there.

Feature: Open an application Scenario: Open Selenium covering Given user has opened the browser When I open BrowserStack demonstration website Then Login push should exist

Step 6: Install the Cucumber Eclipse Plugin and a web driver

Install theCucumber Eclipse Pluginfrom the Eclipse marketplace. The Cucumber plugin lets the codebase cognise you ’ re make a Cucumber task. Moreover,Install Browser Driverto automate your Selenium tests in a browser of your choice. In this illustration, use theFirefoxDriver.

Step 7: Create Step Definitions

Step Definition is a java method in a class containing. An annotating followed by the form is used to unite the step Definition to all the steps create in the feature file.

To make Step definitions, navigate to thesrc/test/javapackage and then add a measure definition folder and file there.

package CucumberJava; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; signification org.openqa.selenium.firefox.FirefoxDriver; import cucumber.annotation.en.Given; signification cucumber.annotation.en.Then; import cucumber.annotation.en.When; public class cucumberJava {WebDriver driver = null; // Opening the browser @ Given (`` user has open the browser '') public void openBrowser () {driver = new FirefoxDriver ();} // Launching the bstackdemo site for testing @ When (`` I open BrowserStack demo website '') public void goTobstackdemo () {driver.navigate () .to (`` https: //bstackdemo.com/signin '');} //Verifying if the page control the active login button @ Then (`` Login button should exist '') public void loginButton () {if (driver.findElement (By.id (`` login-btn '')) .isEnabled ()) {System.out.println (`` Test Pass '');} else {System.out.println (`` Test Fail '');} driver.close ();}}

Step 8: Create a Runner Class

Create a family file in the Step Definitions pamphlet and add the runner class script. The runner class will look something like this.

parcel cucumberTest; import org.junit.runner.RunWith; import cucumber.api.CucumberOptions; import cucumber.api.junit.Cucumber; @ RunWith (Cucumber.class) @ CucumberOptions (features = `` src/test/Feature '', glue= {`` src/test/java/stepDefinition ''}) public family TestRunner {}

Conclusion

The Cucumber framework in Seleniummakes End-to-End (E2E) testing more effective by allowing test scenario to be publish in natural speech, making them easy to understand and ideal for testing. This enhances collaboration between teams and ensures comprehensive establishment of package demeanour.

However, accurate examination results require testing onreal device and browsersto capture real-world execution, cross, and user experience. provides access to a, enabling teams to run Selenium try seamlessly and ascertain flawless website functionality across all environments.

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