Most QA plans and strategies contain both functional and non-functional testing. However, not all quality assurance professionals or product managers understand the difference between these two testing types. In this post, we will clarify the major distinction between functional and non-functional QA efforts. What are the expectations and requirements of these types of testing? What is their focus area? Let’s discover the basic facts about each one.
To begin with, functional testing is one of the most effective techniques of black box testing. What does it mean? It means that this type of testing is used to check whether the app or service is operating according to the specifications, provided by the customer or the marketing team. Actually, the QA expert compares the expected results of testing the software with the actual ones. Each function should be operating according to the customer’s specifications and show off a top-notch execution. The functional testing requirement is to give a clear picture of the system’s behavior. The main question this testing gives the answer is “What does the application do?”
Functional testing usually includes various types of testing:
It is also important to note that functional tests can be performed both manually and automatically.
As a rule, functional testing involves a wide range of techniques:
All functional tests always have a clear input data and have a comprehensive pass and fail criteria.
The non-functional tests include totally different types of system testing. It deals with non-functional software’s parameters, such as usability, security, reliability, scalability, and other features. To put it short, this type of QA effort is about checking the program’s behavior and performance, but not its functions. Non-functional testing is performed to make sure the customers will have the best user experience when using the service. The app should be understandable, convenient, stable, and user-friendly.
Here is a list of top facts about non-functional testing:
The nonfunctional testing requirement is to describe the usability of the system in detail. This type of testing is designed to answer the question “How well does the system operate?” The execution of these tests is usually made automatically.
As a rule, non-functional testing covers various types of QA efforts:
Non-functional testing is performed to check a list of various parameters:
On one hand, non-functional testing is supposed to use various automated tools, like Neoload, Loadrunner, JMeter, and others. On the other hand, functional testing is more effective when using manual QA procedures. Therefore, using crowd testing services in addition to in-house QA teams will provide you with lots of benefits and best outcome. The fact is that crowd testing helps thousands of companies to get many non-biased users and global QA experts to test the performance of the app, program, or service on a great deal of device’s types, operation systems, locations, and carriers. Many companies find that their app won’t behave the same way on a different device or a specific location, thus, especially when it comes to a mobile app, one must utilize crowd testing to ensure the app is operating well under all possible scenarios and conditions. In case you are looking for top-quality crowd testing services, Ubertesters is always here to help.
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