US Patent 11513944 Ranking tests based on code change and coverage

A system can determine a group of changed lines in a file comprising computer-executable instructions. The system can, for the respective changed lines, produce a mapping that identifies respective tests that test the respective changed lines. The system can, from the mapping and for the respective tests, determine a merge that identifies respective ones of the respective changed lines that are tested by the respective tests. The system can, from the merge and for the respective tests of the group of tests, determine respective coverage ratios that represent respective ratios between the respective ones of the respective changed lines of the group of changed lines that are tested by the respective tests and respective total changed lines in the file. The system can select an updated group of tests from the group of tests based on the respective ratios.