Looking for the Needle in the Haystack: End-to-end Tests in Open Source Projects.

There’s a common agreement in the industry that integration and end-to-end (e2e) tests are a challenge for many teams wanting to enable frequent deployments while at the same time guaranteeing quality. What this means for the research community is that there are open research problems that might be interesting to solve. However, little effort is put by academia on these integration and e2e tests. Truth is that all datasets available for research in software testing are focused on unit tests.