What is Functional Testing?

Introduction to Functional Testing

Functional testing is testing based on an analysis of the specifications of a component or system’s functionality. The specified behavior based upon ISO 9126 is considered to be done focusing on suitability, interoperability testing, security, compliance, and accuracy. Techniques used for functional testing are often specifications based, but experienced-based techniques can also be used. Test conditions and test cases are derived from the functionality of the system or component, to design a test, a model may be developed, such as a state transition model, process model or plain language specification.

What is Software Testing?

Software Testing is a method for assessing a software application’s functionality to discover software bugs. It examines the fact that the software created meets the specific demands and identifies any software defects for the production of a product of quality. It executes a system to identify any lacunae, errors or lack of requirements that are contrary to the actual requirements.

In software testing, there are two types of testing:

• Functional Testing
• Non-Functional Testing

Comparison of Functional Testing and Non-Functional Testing

Functional testing verified software actions are carried out, and Non-Functional testing is used to check the software’s efficiency. It always focuses on the user’s requirement, and non-Functional testing focuses on the user’s expectation. It is easily executing in the black box testing. Non-Functional testing is easily executed in the white box testing. It explains what the item is doing. Non-functional testing describes the workings of the product.

Benefits of Functional Testing

It is essential to perform the testing, which verifies that the system is fixed and free from mistakes.

• This test is a replica of the real scheme, i.e. the product is a replica of what the live environment is. Testing concentrates on client requirements.
• The structure of the system doesn’t operate on any assumptions.
• This test guarantees that a quality product meets the requirements of the client and guarantees that the client is satisfied with the final results.
• It guarantees that a bug-free product has all the features that work according to the client requirements. In addition, risk-based testing is carried out to reduce the likelihood of any risk in the product.

Features of Functional Testing

Automation tools, such as Test Complete, assist the guide through the automation of its repeated elements and the flexibility and filtering of its outcomes. Furthermore, offering Test Complete enhances its function. Even the most simple functional test should be applicable over a project’s life so that results can automatically be measured against a standard output that is already validated. Thus, as much as possible, It’s outside of the application should be maintained.

TestComplete offers the necessary characteristics to fulfill this criterion:

• Tests and scripts using any programming structure in your tests are visually designed loops; if circumstances are then, catch blocks, remarks, etc.
• Specific features and techniques to carefully test third-party control apps are Windows formats, Developer Express, Syncfusion, Qt, Infragistics, Telerik, MFC, etc.
• Test Complete offers unrivaled access for a more profound level of functional testing to internal properties and application techniques.
• Developers need to make sure the precise code that concerns them is checked by testing. This creates a possible issue. On the one side, it should be autonomous of the application; on the other side, the application should inspect inner items.
• TestComplete can access the inner information of the application to resolve this prospective issue.

Types of Functional Testing

There are many categories, and they can be used on a scenario basis.

But, first, let’s look at the most important functional test kinds:

1. Unit Testing is generally done by a developer who writes various code units that can be linked or unrelated to a specific feature. Code coverage is a significant component of unit testing where test instances must be present for line coverage, coverage of the code route and coverage of methods.

2. Sanity Testing: It ensures that all significant and key applications/systems functionalities operate properly. This is usually performed following a smoke test.

3. Smoke Testing: It is performed when each component is tested to guarantee the stability of construction. It is also referred to as a build-up test.

4. Regression Testing: Tests conducted to guarantee that adding fresh code, enhancements and fixing bugs does not violate the current functionality or create instability.

5. Integration Testing: When the system depends upon various functional modules, which may operate perfectly separately but have to operate coherently to obtain an end to end situation, integration testing is called validation of these scenarios.

6. Usability Testing: In an environment like production, the product is exposed to the actual customer and tested. The convenience of the user is obtained, and feedback is received. This is comparable to screening for user admission

Conclusion

It is a system-testing method in software testing and guarantees that the system operates in accordance with the functionality stipulated in the company document. The objective of this test is to verify the performance of the scheme.

Recommended Articles

This is a guide to What is Functional Testing? Here we discuss the benefits, features, and types of functional testing respectively. You may also have a look at the following articles to learn more –

1. Types of Software Testing
2. Testing Frameworks for Java
3. Careers in Software Testing
4. Software Testing Principles