A Quick Comparison Between Functional and Non Functional Testing

Software Testing is a part of quality assurance services that is broadly categorized into Functional and Non- Functional Testing. Let's discuss these testing types along with the key differences between functional and non-functional testing.

Functional Testing

Functional testing may be a sort of software testing during which the system is tested against the functional requirements and specifications. Functional testing ensures that the wants or specifications are properly satisfied by the appliance.

Based on the requirement of the client, a document called a software specification or Requirement Specification is used as a guide to testing the application.

A test data is sculpted based on it and a set of Test Cases are made. The software is then examined in a live environment to examine whether the actual outcome is in sync with the assumed result. This is called a black box technique and been carried out manually.

Non-Functional Testing

This is a type of software testing that is done to check the non-functional requirements of an application. It verifies whether the behavior of the system is as per the requirement or not.

Non-Functional testing is to check or examine an Application that is working as per the User's Expectation or not. Is an application function smoothly & efficiently under any circumstance or not. So, such type of testing we can't test manually. Hence we use some special tools to test it.
Example:-LoadRunner, JMeter, etc.

Difference Between Functional and Non-functional Testing 
 

1. Unit Testing
2. Smoke Testing
3. Integration Testing
4. Regression Testing 

1. Performance Testing
2. Load Testing
3. Stress Testing
4. Scalability Testing

Type's of Functional Testing

1. Unit testing: A unit is that the smallest testable a part of any software. it always has one or a couple of inputs and one output. it's A level of software testing where individual units/components of the software are tested.

2.Integration testing: It is a level of software testing where individual units are combined and tested as a group. The main purpose of this sort of testing is to show faults within the interaction between integrated units.

3.System testing: It is a level of software testing where the complete and integrated software is tested. The purpose of this test is to gauge the system’s compliance with the required requirements.

4.Regression testing: Regression testing verifies that a code change in the software does not have an impact on the existing functionality of the product. 

5.User-acceptance testing: It is a level of software testing where a system is tested for acceptability. The sole purpose of this test is to evaluate the system’s compliance with its business requirements and assess whether it is acceptable for delivery. It checks whether the software can handle the required tasks in real-world scenarios.

Type's of Non-Functional Testing

1.Documentation testing: It helps to estimate the required testing efforts and track the requirements. Documentation involves a test plan, test cases, and specifications section. It tests the documented artifacts.

2. Installation testing: It checks quality assurance. It helps to test the procedures to achieve an installed software system that may be used is to know Installation testing. The procedures may involve full or partial upgrades.

3.Performance testing: It is defined as a type of software testing that is performed to determine Stability and  Response time under a particular workload. 

Types of Performance Testing

a) Load Testing: It is a type of performance testing conducted to evaluate the behavior of a system at an increasing workload.

b) Stress Testing: It is a type of performance testing conducted to evaluate the behavior of a system at or beyond the limits of its anticipated workload.

c) Endurance Testing: It is a type of performance testing conducted to evaluate the behavior of a system when a significant workload is given continuously.

d) Spike Testing:  It is a kind of performance testing conducted to gauge the behavior of a system when the load is suddenly and substantially increased.

4) Reliability testing: It assures that the product is fault free and is reliable for its intended purpose. 

5) Security testing: It is a variant of software testing which ensures that the system and applications of the organization are free from loopholes.

Conclusion:

We are a 360-degree software development company that also specializes in providing end-to-end QA services. With our software testing services, compress time to market, reduce costs, and earn customer loyalty by delivering a product to perfection. Our QAs and testing engineers use Shift-left and Continuous Delivery approach in all stages of development to ensure stability, usability, and scalability of the product or services.