Methods and apparatus, including computer program products, for testing software involve generating a software build of source files and initiating tests on the software build. Each test is performed using a portion of the software build that corresponds to one or more of the source files. Results data relating to the tests, such as an indication of errors identified in the tests, is stored. The results data further identifies source files associated with each of the tests. A notification message relating to the results data is sent to a user.