Fault detection using breakpoint value-based fingerprints of failing regression test cases

A system for performing fault detection, the system comprising:

• at least one processor;
• and
• at least one memory storing computer-executable instructions, wherein the at least one processor is configured to access the at least one memory and execute the computer-executable instructions to:
• execute a set of test cases on source code;
• determine that one or more test cases in the set of test cases fail to successfully execute;
• select a particular failing test case from the one or more test cases that fail to successfully execute;
• generate a set of failing cases based on the particular failing test case by creating a respective new test case with respect to each attribute in the particular failing test case;
• determine a first set of fingerprints respectively corresponding to the set of failing test cases;
• determine a second set of fingerprints respectively corresponding to a set of passing test cases that successfully execute on the source code;
• storing, in a data structure, the first set of fingerprints and the second set of fingerprints, wherein a fingerprint of a test case represents a set of breakpoints encountered by the test case;
• determine, based at least in part on a comparison of the first set of fingerprints to the second set of fingerprints, one or more lines of the source code that are contributing to a fault, wherein determining the one or more lines of the source code that are contributing to the fault comprises:
• determining a set of breakpoint encounters that are present in the first set of fingerprints and absent from the second set of fingerprints;
• and
• determining the one or more lines of the source code based at least in part on a correspondence between the one or more lines of the source code and the set of breakpoint encounters.

A computer program product for performing fault detection, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions readable by a processing circuit to cause the processing circuit to perform a method comprising:

• executing a set of test cases on source code;
• determining that one or more test cases in the set of test cases fail to successfully execute;
• selecting a particular failing test case from the one or more test cases that fail to successfully execute;
• generating a set of failing test cases based on the particular failing test case by creating a respective new test case with respect to each attribute in the particular failing test case;
• determining a first set of fingerprints respectively corresponding to the set of failing test cases;
• determining a second set of fingerprints respectively corresponding to a set of passing test cases that successfully execute on the source code;
• storing, in a data structure, the first set of fingerprints and the second set of fingerprints, wherein a fingerprint of a test case represents a set of breakpoints encountered by the test case;
• determining, based at least in part on a comparison of the first set of fingerprints to the second set of fingerprints, one or more lines of the source code that are contributing to a fault, wherein determining the one or more lines of the source code that are contributing to the fault comprises:
• determining a set of breakpoint encounters that are present in the first set of fingerprints and absent from the second set of fingerprints;
• and
• determining the one or more lines of the source code based at least in part on a correspondence between the one or more lines of the source code and the set of breakpoint encounters.