Functional Testing

Functional Testing

Why Functional Testing?

QATestLab performs functional testing to ensure that users are able to flawlessly utilize the full functionality of software solutions. We verify if products meet the functional requirements and possess capacity needed to fulfil the functions according to specifications.

Apart from verifying that software operates according to the requirements, we also check if it doesn’t behave the way it should not and perform functions it is not designed to. By simulating real usage of a solution, we detect any system deviations from the specification.

In order to provide objective evaluation of the system functionality, we do not make any assumptions on the system structure and architecture. We create special conditions on the basis of users’ expectations and business requirements.

How we test

While performing functional testing, we not only assess system core functionality, but also check the solution user-friendliness by conducting basic usability checking, verify accessibility for end users, and determine and test error conditions.

To make functional testing more efficient, we perform requirements-based checking under the prioritized criteria and start testing the most critical features. We execute functional tests applying black box methodology.

In order not to miss software logical issues and avoid redundant checking, we thoroughly examine the specifications and system requirements. By prioritizing the product features and tests, we provide the evaluations of critical functionality first. We trace already executed tests and recheck system functions in order to be always aware of the current quality of the solution.


Functional Testing saves reputation

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The product with low performance and poor functionality, for sure, reduces users’ confidence as it does not satisfy their expectations and needs. Serious functional issues and limitations on the product affect the vendor's reputation.

Functional testing provides the evaluation of the system features in accordance with the business and user requirements. Besides, functional tests can fully imitate the actual usage of system in real life. They help to detect software errors at the early stages and prevent the emergence of other ones in further development. Functional testing helps to release a stable solution.