tapsaranya2005
- Apr 8, 2021
- 5 min read

BDD with Gherkin

Behavior Driven Development (BDD) is an approach that consists on defining the behavior of a feature through examples in plain text. These examples are defined before the development starts and are used as acceptance criteria

Gherkin is a format for Cucumber Specifications. It is a business readable language created for behavior descriptions.

The Main keywords in Gherkin are

· Feature

· Scenario

· Given

· When

· Then

A feature is a desired product functionality often involving multiple behaviors. In simple terms, Feature is collection of related scenarios.

Syntax for feature is:

Feature: Summary

A Scenario describes the steps and expected outcome for a particular test case.

Syntax for Scenario is:

Scenario: Title

Given steps are used to describe the initial context of the system - the scene of the scenario. It is typically something that happened in the past.

Syntax for Given is:

Given: Set up initial state

When steps are used to describe an event, or an action. This can be a person interacting with the system, or it can be an event triggered by another system.

Syntax for When is:

When: Perform Action

Then steps are used to describe an expected outcome, or result.

Syntax for Then is:

Then: Check end state

Simple example to understand Gherkin format

Given the login page is opening

When I input username, password and click on login button

Then I am on the homepage

Gherkin Examples:

Feature: Login functionality of social networking site

Scenario: Login to Facebook

Given: I am a Facebook user

When: I enter username as username and I enter password as the password

Then: I should be redirected to the Facebook homepage

Feature : Login functionality of Gmail

Scenario: TC01 - Successful Login to web Gmail

Given : I am on Login page

And: I am a registered user

When: I enter correct username and password

And: I click on Sign in button

Then: Inbox is displayed

Scenario : TC02 - Successful Login to web Gmail using sign in link in create account page

Given : I am on Create Google account page

And: I am a registered user

When: I click on Sign in instead link on Create Google Account page

Then: Login page is displayed

When: I enter correct username and password

And: I click on Sign in button

Then: Inbox is displayed

Scenario: TC03 - Successful Login to web Gmail

Given : Launch the browser

And: I am a registered user

And: I have multiple gmail account

When: Enter gmail.com

Then: List of all accounts are displayed

When: I select the account to login

Then: Password page is displayed

When: I enter the password

And: Click on Sign in button

Then: Inbox is displayed

Scenario :TC04- Successful Login to Gmail app

Given : I installed gmail app

And: I am a registered user

When: I launch the gmail app

And: I enter the correct user name and password

And: I click on Sign in button

Then: Inbox is displayed

Scenario :TC05- Automatic successful Login to web Gmail

Given : I have already logged in to the gmail account

And: I am a registered user

When: I launch gmail website

Then: Inbox is displayed

Scenario :TC06 -Automatic successful Login to web Gmail

Given : I have already installed and logged into gmail app

And: I am a registered user

When: I launch the gmail app

Then: Inbox is displayed

Scenario :TC07--Unsuccessful Login to web Gmail

Given : I am on Login page

And: I am a registered user

When: I enter incorrect username and password

And: I click on Sign in button

Then: Inbox is displayed

Scenario : TC08-Unsuccessful Login to Gmail app

Given : I installed gmail app

And: I am a registered user

When: I launch the gmail app

And: I enter incorrect user name and password

And: I click on Sign in button

Then: Inbox is displayed

Scenario:TC09- Forgot my password functionality

Given: I am on login page

And: I am a registered user

When: Click on more ways to sign in option

And: Click on Forgot password link

And: Enter the incorrect last password

And: Click on Sign in button

Then Autorecovery page is displayed

And Notification is received on phone

When: Click on Yes in the notification

Then: Enter the new password and confirmation password

And: click update button

Then: Inbox is displayed

Scenario : TC10-Successful Gmail account creation on web

Given : I click on Home page

When: I click on create an account button

Then: Create your Google Account page is displayed

When: I enter firstname, last name, username, password, confirm password information

And: Click on Next

Then: Inbox page is displayed

Scenario :TC11- Successful Gmail account creation on app

Given : Gmail app is installed

When: I click on create an account button

Then: Create your Google Account page is displayed

When: I enter firstname, last name, username, password, confirm password information

And: Click on Next

Then: Inbox page is displayed

Scenario:TC12 - Duplicate Email

Given : I am on Create Google account page

When: I enter existing email id for creating account

Then: Email id is already registered message is displayed

Feature : Unlocking my phone

Scenario : TC01- Unlock my phone using thumb impression(Succesfully)

Given: Registered thumb impression

when : Press power button

then: Screen displays thumb impression option

when : Thumb impression is provided

then : phone is unlocked

Scenario :TC02- Unlock my phone using thumb impression(Un Succesfull)

Given: Registered thumb impression

when : Press power button

then: Screen displays thumb impression option

when : Wrong thumb impression provided

then : please try again

Scenario :TC03- Lock the phone with multiple incorrect thumb impression after 3 attempts

Given: Registered thumb impression

when : Press power button

then: Screen displays thumb impression option

when : Wrong Thumb impression is provided

then : please try again

when : Wrong thumb impression is provided

then : please try again

when : Wrong thumb impression is provided

then : phone is locked. please try again after 30 seconds

Scenario :TC04 Unlock the phone using password(Successfully)

Given : Registered Password

When : Press power button

then: Screen displays enter password option

when :Password is entered

then : Then phone gets unlocked

Scenario :TC05- Unlock the phone using password(Unsuccessful)

Given : Registered Password

When : Press power button

then: Screen displays enter password option

when :Password is entered

then : Wrong Password. Please try again

Feature: Calculator

Scenario: TC01 - Sum of two numbers