Abstract
Software maintenance is an important and costly activity of the software development lifecycle. Regression testing is the process of validating modifications introduced in a system during software maintenance. It is very inefficient to re-execute every test case in regression testing for small changes. This issue of retesting of software systems can be handled using a good test case prioritization technique. A prioritization technique schedules the test cases for execution so that the test cases with higher priority executed before lower priority. The objective of test case prioritization is to detect fault as early as possible. Early fault detection can provide a faster feedback generating a scope for debuggers to carry out their task at an early stage. Model Based Prioritization has an edge over Code Based Prioritization techniques. The issue of dynamic changes that occur during the maintenance phase of software development can only be addressed by maintaining statistical data for system models, change models and fault models. In this paper we present a novel approach for test case prioritization by evaluating the Business Criticality Value (BCV) of the various functions present in the software using the statistical data. Then according to the business criticality value of various functions present in the change and fault model we prioritize the test cases are prioritized.
Highlights
Software developers often save the test suites they develop for their software, so that they can reuse those suites later as the software evolves
Regression testing can be defined as follows: Let P be a program and P’ be a modified version of P with T be a test suite developed for P, regression testing is concerned with validating P’
Kumar et al.[18] have proposed a new approach which considers the severity of faults based on requirement prioritization. They considered four different factors to assign the weights to the requirements: Business Value Measure (BVM), Project Change Volatility (PCV), Development Complexity (DC), and Fault Proneness of Requirements
Summary
Software developers often save the test suites they develop for their software, so that they can reuse those suites later as the software evolves. There is safe regression test selection techniques that can ensure that the selected subset of a test suite has the same fault detection capabilities as the original test suite, the conditions under which safety can be achieved do not always hold. For these reasons testers may want to order their test cases or reschedule the test cases [5]. In general test case prioritization, given a program P and test suite T, we prioritize the test cases in T with the intent of finding an ordering of test cases that will be useful over a succession of subsequent modified versions of P.
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