2024

Alina Torbunova; Per Erik Strandberg; Ivan Porres

Regression testing in software development checks if new software features affect existing ones. Regression testing is a key task in<br/>continuous development and integration, where software is built in small increments and new features are integrated as soon as<br/>possible. It is therefore important that developers are notified about possible faults quickly. In this article, we propose a test case prioritization schema that combines the use of a static and a dynamic prioritization algorithm. The dynamic prioritization algorithm rearranges the order of execution of tests on the fly, while the tests are being executed. We propose to use a conditional probability<br/>dynamic algorithm for this. We evaluate our solution on three industrial datasets and utilize Average Percentage of Fault Detection<br/>for that. The main findings are that our dynamic prioritization algorithm can: a) be applied with any static algorithm that assigns<br/>a priority score to each test case b) can improve the performance of the static algorithm if there are failure correlations between test<br/>cases c) can also reduce the performance of the static algorithm, but only when the static scheduling is performed at a near optimal<br/>level.<br/>