Types of Software Test Services: Functional & Non-functional Testing

There are types of software test services that are used when software testers need to validate different software products and programs.

Types of Software Test Services:

• Functional Testing.
• Non-functional Testing.
• Structural Testing.
• Re-Testing.
• Regression Testing.

Depending on the developed product, software life-cycle, and test levels, dedicated testing team use all the mentioned above testing types for a complex testing. The choice of each type depends on the number of factors (availability of documentation, competent staff, test environment) and the main tasks of each testing type – to provide objective and subjective information about the quality of the product in minimal time to make a decision on the product quality.

Functional Testing as a Service

Functional testing validates whether the program performs its functionality as it was declared in the requirements. Functional testing service is conducted on every test level. On the component level, testers verify the work of functionality that is specific to the given level. Respectively, software testers create and check the tests, open defects on the broken functionality, if the program behavior doesn’t meet the program requirements. Another test level “have” their functionality testing. If software testers participate in the project from the beginning, they have time to analyze the requirements and clarify them with the customers, as well as create functional tests.

Functional testing possesses the term as “Black Box Testing”. Tests and test scenarios are developed based on functional and non-functional specification without knowledge of product structure.

Non-Functional Testing

Non-functional testing focuses on “How” the product works. Non-functional testing is also performed on every level with relevant tests. These tests require a good knowledge of product requirements. The test environment is configured by real situation in which the program or product will be used. When performing this software testing service, testers use helper programs for complex emulation modes.

Types of Non-Functional Testing:

• Installability Testing.
• Performance Testing.
• Load Testing.
• Stress Testing.
• Portability Testing.
• Recovery Testing.
• Reliability Testing.
• Usability Testing.
• Security Testing.