TestNG vs Cucumber: Core Differences

is pivotal before any feature freeing for a software coating, to check if the feature is working as per the concern requirements. While there are different fabric that are used to do functional testing of web applications, this article compares TestNG and Cucumber to spotlight when to use which.

This clause compares TestNG and Cucumber to highlight when to use which.

What is TestNG Framework?

is a comprehensive testing fabric written in Java that can be used for writing unit tests, functional examination, integration tests, and. It is instigate by and is developed by Cédric Beust.

TestNG simplifies writing tests by providing Annotations. are nothing but a note written on top of the methods which mean what and how the method should behave. The annotation are special methods that start with “@”

How to write examination in TestNG?

Let & # 8217; s take a look at the unit test lawsuit where we will be checking if the given PIN is correct or not in a banking application:

Step 1:Writing the occupation logic of the test

• The core logic which needs to be tested with the required scenarios is placed here
• Check the length of the given input PIN
• This is marked by the annotating@Test

Step 2: Insert appropriate TestNG annotating

There might be a requirement where a task needs to be repeatedly done before go each test case. TestNG can be used to automate it. TestNG provides note like@ BeforeTest and @ AfterTest

In this case, since it is required to open the banking app, enter the PIN and close the baking app after every test, hence expend annotating as follow:

• @ BeforeTest& # 8211; Open the Banking app
• @Test& # 8211; Has the business logic to control if the given PIN is valid or not
• @ AfterTest& # 8211; Closes the banking app

Pro tip: Tools like SUSA can handle this autonomously — upload your app and get results without writing a single test script.

Step 3:Create an XML file with required groups and classes, where tests need to be executed by apply any modern IDE puppet such as IntelliJ or Eclipse.

Step 4: Run TestNG

What is Cucumber Framework?

is a test tool that supports Behaviour Driven Development (BDD). It supply a way to write tests that can be even silent by non-technical folk. Cucumber is written in Ruby.

How to write tests in Cucumber?

In Cucumber, the tests are written file that have an extension called.featurewritten in Gherkin. Like YAML, Gherkin is a line-oriented language that uses indenture to specify structure.

A .featurefile contains afeaturedefining high-level functionality andscenarios describing individual test instance and how they behave within a characteristic. A particular feature can have multiple scenarios.

Writing scenarios:

The scenarios in Cucumber framework can be written in the following format “Given-When-Then”.

Example:

This example showcases a lineament called “ ascertain the bank balance from the banking app ”.

The feature functionality can be described as

• User logins to the banking app,
• Selects the cheque balance option,
• Bank balance displays when a user participate the correct 4-digit PIN.

Feature: Checking bank balance from the banking app.

• Scenario 1: Check the balance by inscribe the correct PIN.

Givenuser opens the banking coating and selects Check Balance

Whenuser enters PIN as 1234

Thenbank balance should be displayed

• Scenario 2: Check the proportion by entering 5-digit PIN

Givenuser open the banking covering and selects Check Balance

Whenuser enters PIN as 12345

Thenapp should demonstrate a notification that an incorrect pin has be enroll

These kinds of tests are easily understood by non-technical users (business stakeholders) as it has been written descriptively.

TestNG vs Cucumber: When to use which

Although TestNG and Cucumber are used for testing features, the way of testing features differs a lot in each of the cases. Let & # 8217; s guide a face at TestNG vs Cucumber to understand the differences between them

By analyzing the differences between TestNG and Cucumber, here ’ s how you can resolve when to use which:

• When there is a demand to screen an significant feature that needs to be realize by the line stakeholders, Cucumber can be used.
• To test a technically implemented complex business logic/algorithm where behavior is not a determine factor TestNG can be used.

Whether you choose TestNG for TDD or Cucumber for BDD, to perform, it is recommended to run the tests on real devices for better truth as opposed to. By leveraging, like BrowserStack you can entree 3000+ browser-device combinations and of your web applications. This helps in ensuring that the test cases are scarper as look even in.

Related Guides