Test Case Prioritization: Various Techniques–A Review

Regression testing is extremely very expensive process for software development and maintenance. Whenever software is modified then re-executing all the test cases that have previously tested to ensure that there no new errors have been introduced in the code due to modification. For this researchers can prioritize the test cases to increase the effectiveness of the testing process and to reduce the cost of regression testing. With the help of test case prioritization researchers can schedule test cases in a test suite by ordering them in such a way that those with higher priority according to some criterion are executed earlier than those with lower priority. In this paper we present the review of some popular test case prioritization techniques like Average Percentage of Fault Detection (APFD), Severity of Faults, Mutation Faults, Ordered Sequence of Program Elements, and Search Algorithm are some popular techniques of test case prioritization with their pros and cons.