Product Line Variability with Elastic Components and Test-Driven Development

In this work we present a systematic approach for the creation of new variant software components via customization of existing core assets of a software product line. We consider both functional and quality variants and address the issue of a controlled creation of variants which considers the reference architecture and its co-evolution with a number of other artifacts including components and functional and quality test suites. Furthermore we discuss the relationship between the popular agile practice of test-driven development (TDD) and how it can be used to assist the evolution of software components of a software product line.