It’s common to focus on functional requirements and usability when testing an application, areas which are often where most of the effort is spent once an app has moved into the testing, QA, and UAT phases of a project.
Before even thinking about any functional app code, though, it’s important to test all the app’s non-functional elements first. If those aren’t prioritised, not only will it have a knock-on effect on all other testing, it will also impact the app’s ability to function once deployed.
Defining, and clearly understanding, non-functional testing processes is the key to releasing a defect-free mobile app into production. When separated into two groups, these can be referred to as ‘initial’ non-functional tests, and ‘running app’ non-functional tests. But before we go into more detail, it’s necessary to understand why non-functional testing is unique for mobile.