What is the difference between Usability testing & Functional testing

Question

can anyone help me in understanding the difference between Usability testing and functional testing with any sample example.

Sundar · Answer

In a simple terms Functional testing is testing just the functionality of the application whereas system testing is top to bottom or end to end testing; testing the entire system as one entity. It is a high level testing. Usability testing is a core skill because it is the principal means of finding out whether a system meets its intended purpose.

Manikandan Murugesan · Answer

Hai Sir Functional testing is carried out to ensure that the product behaves according to the functional requirements without taking design principles into consideration. This entails a series of tests which perform a feature-by-feature validation of behavior using a wide range of normal and erroneous input data. In contrast usability testing focuses on customer acceptance and how well the customer can use the product to complete the required task. Usability testing investigates all aspects of the usability of a product including overall structure navigational flow layout of elements on a page clarity of content and overall behavior. usability testing needs to come after functional testing once functional problems have been fixed. Performing usability testing on functionally-flawed products only unearths functional problems which leads to frustration for the participants who are struggling with bugs when trying to complete a task. It hinders the participants it negatively influences their perception (and hence their feedback) and it invalidates the usability aspect of the results. Functionality testing confirms whether something works. Usability testing confirms whether it works well for user s. Functional Testing belongs to Quality Assurance where Black Box/White Box testings are done on the applications to ensure 100% working of all functionalities. You can solve a problem in many ways. All of them can be functionally sufficient (i.e. user is able to add a new account number) but very few of them will be truly usable (i.e. user is able to perform the task without looking in the manual). Usability Testing deals with testing the application with real-time end users to understand if it really solves their problems with ease of use minimal interactions and intuitive interface.

Gokhul Varman · Answer

Please refer the link for more detailed explanation:http://www.betabreakers.com/functionality-vs-usability-testing/