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What is Functional Testing? Key Difference Between Functional and Non-Functional Testing

By March 23, 2020July 3rd, 2024No Comments3 min read
What is Functional Testing? Key Difference Between Functional and Non-Functional Testing

There are different types of software testing In fact, software testing is a broad term and hence requires broader specification that has been divided into two parts which are Functional Testing and  Non-functional Testing. Before dissecting each aspect of the above two terms let us first start by defining What is Functional Testing and What is Non-functional testing. As a leading Web and QA functional testing company, With our functional testers, you can analyze the difference between functional and non-functional testing.

What is Functional Testing?

There are various definitions of “What is Functional Testing in software testing?” But in simple terms, Functionality Testing is the sort of testing done against the business necessities of an application. It is predominantly a black box testing form.

It includes the total incorporated framework to assess the framework’s consistency with its predefined requirements. In light of the functional testing document, this kind of testing is to be done. In the event of actual testing, testers need to check a particular activity or capacity of the code. For functional testing, either manual testing or automated functional testing tools can be utilized however functionality testing would be simpler utilizing manual testing.

What is Non-Functional Testing?

Wondering what is non-functional testing? So, According to us, This type of testing is done for behavioral necessities. The greater part of the criteria is not considered in functionality testing so it is utilized to check the status and readiness of a framework. Non-functional prerequisites will, in general, be those that mirror the nature of the item, especially with regards to the appropriateness point of view of its clients. It very well may be begun after the fruition of Functional Testing. The tests can be successful by utilizing testing apparatuses.

This includes testing of programming aspects which escape from the client activity like execution, security, or code of utilization under specified imperatives.

This type of testing affects client and client fulfillment with the item. Non-functional testing ought to be communicated in a testable way. Fundamentally the non-functional test is utilized to major non-functional traits of programming frameworks.

Understanding the basic aspects of both functional and non-functional testing further helps in understanding the differential aspects of the same.

What is the Difference Between Functional Testing and Non-Functional Testing?

Functional Testing

Non-Functional Testing
It makes sure to test what the product actually does. and thorough checks on the operations and actions of a particular applicationIn this type of testing, makes sure to check and test the behavior of the application in terms of its performance
The core focus of this form of testing is on user requirementsThe core focus of this form of testing is on


User expectations and the extent to which they are fulfilled

The requirements for a functional test is quite easy to define as they are in a valid and premeditated scopeIt is quite complex to define the requirements for this form of testing due to the varied nature of its requirement scope
Functional testing requires manual testing as it is easy to executeIt is difficult to manage and hence it requires automated testing for any iterative tests.
Customer feedback in this regard helps in judging the risk factors associated with the applicationCustomer feedback in this regards help us in knowing whether the application is going to be successful and meet us to the customer expectations at par
Functional Testing aggregates the following forms of testing within itself. The functional testing types include; 



1) Unit Testing

2) System testing

3) Integration Testing

4) Acceptance testing

It aggregates the following form of testing within itself



1) Performance Testing

2) Load Testing

3) Stress Testing

4) Volume Testing

5) Security Testing

6) Installation Testing

7) Recovery Testing


T both are a crucial part of the software testing life cycle As they both help the testers to analyze various areas of applications including compatibility, user behavior, performance, etc. Hence, it is important to hire QA functional testing company to ensure the user experience and components of the product.

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