The most common reason for Continuous Integration (CI) builds to break is failing tests. When a build breaks, a developer often has to scroll through hundreds to thousands of log lines to find which test is failing and why. Finding the issue is a tedious process that relies on a developer’s experience and increases the cost of software testing. We investigate how presenting different kinds of contextual information about CI builds in the Integrated Development Environment (IDE) impacts the time developers take to fix a broken build. Our IntelliJ plugin ToolX surfaces additional information such as a unique view of the code under test that was changed leading up to the build failure. We conduct a user experiment and show that ToolX helps developers fix failing tests 13.4% to 48.6% faster. The participants found the features of ToolX useful and would incorporate it in their development workflow to save time. With ToolX we set an important step towards removing the need to manually inspect build logs and bringing CI build results to the IDE, ultimately saving developers time.
