Go beyond basic testing! Great software testing makes the entire development process more
efficient. This book reveals a systemic and effective approach that will help you customize …

In this article, we propose to use production executions to improve the quality of testing for
certain methods of interest for developers. These methods can be methods that are not …

When a developer pushes a change to an application's codebase, a good practice is to have
a test case specifying this behavioral change. Thanks to continuous integration (CI), the test …

Descartes is a tool that implements extreme mutation operators and aims at finding pseudo-
tested methods in Java projects. It leverages the efficient transformation and runtime …

Unit tests are a tenant of agile programming methodologies, and are widely used to improve
code quality and prevent code regression. A green (passing) test is usually taken as a robust …

Most modern object-oriented software systems are variability-rich, despite that they may not
be developed as product lines. Their variability is implemented by several traditional …

Mutation testing is a technique that changes code instructions to assess the quality of
automated software tests. Industry has not broadly adopted the technique because …

An extreme transformation removes the body of a method that is reached by one test case at
least. If the test suite passes on the original program and still passes after the extreme …

Version Control Systems are key elements of modern software development. They provide
the history of software systems, serialized as lists of commits. Practitioners may rely on this …

Abstract Rotten Green Tests are tests that pass, but not because the assertions they contain
are true: a rotten test passes because some or all of its assertions are not actually executed …