Improving Software Testing in an Agile Environment

Sammanfattning: Software development has evolved at an ever-increasing pace over the past years, one of the forces behind this acceleration is the move from on-premise application to cloud- based software: Software as a service (SaaS). Cloud computing has changed the way applications are deployed used and tested. Time-to-market for software has decreased from the order of month to the order of day. Furthermore, Source Code Management based on Git (introduced in 2005), changed the way software is developed allowing for collaborative work thanks to automatic merge and versioning. Additionally, continuous integration (CI) tools developed on top of Git facilitate regular testing, build and deployment. Nevertheless, despite of being necessary Integration tools, they require an extensive amount of cloud resources which may stretch the duration of code integration. The goal of this thesis is to optimize the speed of the CI pipeline, improve the software tests while optimizing the load on the cloud resources. As a result of the work of this thesis the completion time of the software test has been decreased by 21%, and the total continuous integration completion time decreased by 18%. Furthermore, new bugs and anomalies were detected thanks to improved soft- ware test and new approaches for the emulation of extreme scenarios. The bugs were corrected making the system more resilient and improving the user experience.