Automatic test generation using checkpoint encoding and antirandom testing

The implementation of an efficient automatic test generation scheme for black box testing is discussed. It uses checkpoint encoding and antirandom testing schemes. Checkpoint encoding converts test generation to a binary problem. The checkpoints are selected as the boundary and illegal cases in addition to valid cases to probe the input space. Antirandom testing selects each test case such that it is as different as possible from all the previous tests. The implementation is illustrated using benchmark examples that have been used in the literature. Use of random testing both with checkpoint encoding and without is also reported. Comparison and evaluation of the effectiveness of these methods is also presented. Implications of the observations for larger software systems are noted. Overall, antirandom testing gives higher code coverage than encoding random testing, which gives higher code coverage than pure random testing.