Sub-setting

TEXTSubsetting is a method of selecting a predefined data sub-set necessary for testing some particular development iteration of the code at specified environment.

Let's consider the data lifecycle

Coding from scratch

Any development starts with the idea, which translates into code, and this code is tested with some data. Test use cases define which data to use and create. At this stage, it is important to find data sources, and the random components that contain data sets are easy to use for this purpose, as well is the 'regular expression' component. The amount of data necessary to test in that stage of the development is usually the bare minimum to test use cases, mainly for functional requirements. Of course, non-functional requirements are taken into account in the architecture, but the time to test them is usually on a bigger environment than the developer's sandbox.

This development stage is the first iteration of code.

When the first iteration of code is complete, often times developers push the code to the testers,