Cucumber (Selenium + Java) Tutorial in English & Tamil

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What is Cucumber?

• Cucumber is a software tool that supports behavior-driven development
• Cucumber use Gherkin language as a parser
• It supports various language liks Java, JavaScript, Ruby & Python
• Cucumber is free to use

What is BDD?

• BDD includes test case development on the basis of the behavior of software functionalities
• BDD is written in simple English language statements, not in a typical programming language
• BDD improves communication between technical and non-technical teams and stakeholders

What is Gherkin?

• Gherkin is a language that developers use to define tests in Cucumber. Since this language uses plain English, it’s meant to describe use cases for a software system in a way that can be read and understood by almost anyone

Gherkin Syntax

• Feature -> The feature file starts with the keyword Feature. Under feature, you can mention the feature name which is to be tested
• Scenario -> Each scenario starts with a keyword Scenario There can be one or more scenarios in a feature file
• Given -> It is used to define the pre-condition in our test
• When -> It is used to define an action
• And -> It is used to connect two statements and provides the logical AND condition between any two statements
• Then -> It is used to define the final outcome or for validation
• But -> It defines the negative assertion

What are Hooks?

• Hooks are blocks of code that can run at various points in the Cucumber execution cycle.
• They are typically used for setup and teardown of the environment before and after each scenario.

Types of hooks

• Scenario hooks
  • @Before
  • @After
• Step hook
  • @BeforeStep
  • @AfterStep

Tags

• Tags are a great way to organise your features and scenarios
• Tags can be used in the following places:
  • Feature
  • Scenario
  • Scenario Outline
  • Examples
• Tags can be used in conditional format using "And", "or" & "not"
• It is similar to groups in TestNG

Installation

Selenium Dependency

<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>3.141.59</version>
</dependency>

Cucumber Dependency

<!-- https://mvnrepository.com/artifact/io.cucumber/cucumber-java -->
<dependency>
    <groupId>io.cucumber</groupId>
    <artifactId>cucumber-java</artifactId>
    <version>4.2.2</version>
</dependency>

<!-- https://mvnrepository.com/artifact/io.cucumber/cucumber-testng -->
<dependency>
    <groupId>io.cucumber</groupId>
    <artifactId>cucumber-testng</artifactId>
    <version>4.2.2</version>
</dependency>

Report

Extent Report

<dependency>
    <groupId>com.aventstack</groupId>
    <artifactId>extentreports-cucumber4-adapter</artifactId>
    <version>1.2.1</version>
</dependency>
<dependency>
    <groupId>com.aventstack</groupId>
    <artifactId>extentreports</artifactId>
    <version>5.0.1</version>
</dependency>

Youtube tutorial