A method includes identifying a set of tests for a source code, analyzing the set of tests to identify overlapping blocks of the source code that are to be tested by each of the set of tests, merging a subset of the tests that include the overlapping blocks of the source code to create a merged test, and causing the merged test to be executed to test the source code. In an implementation, code coverage results are used when analyzing the set of tests to identify overlapping blocks of the source code.