Testing a software or application is the most important phase of Software Development Life Cycle (SDLC). It plays a very essential role in deciding the quality and functionality of the software and ensures that the end product is as per client’s demand. The Testing of the software is done to detect faults and errors in its functionality, on the basis of which the performance and quality of the software is further improved. Test Prioritization is an extension of software testing, which is implemented to decide the priority of the test cases. This priority of the test cases is decided through various factors that depend upon the need of the software, which are then assigned to the test cases for further processes. By prioritizing test cases, testers and developers are able to minimize the time and cost of software testing phase and make sure that the delivered product is of exceptional quality.
The term ‘test prioritization’ refers to the subjective and difficult part of testing that allows testers to manage risks, plan tests, consider cost value, and be analytical about which test to run in the context of the specific project. This process, is well known as Test Case Prioritization, which is a method of prioritizing and scheduling test cases. This techniques is used in order to run test cases of higher priority in order to minimize time, cost and efforts during software testing phase. Furthermore, test case prioritization provides assistance with regression testing and improves its performance. Through this method, testers can easily run test cases, which have the highest priority and provide earlier defect faults. Also, an improved rate of fault detection during the testing phase, allows faster feedback of the system that is under test. With test case prioritization software engineers can get assistance in correcting faults earlier than might otherwise be possible. Moreover, to decide the priority of test cases, various factors depending upon the need of the software are decided.
Test case prioritization is an extremely important element of software testing. It allows testers to test highest priority test cases, which helps them resolve most critical issues earlier in the testing phase. However, it is essential for the testers to follow several factors while executing test case prioritization. These factors ensures that proper testing is executed in appropriate order and also validates that all discrepancies are detected during the process of testing. The aspects that are required to be considered while prioritizing test cases are:
From reducing the cost and time of testing, to helping testers in managing the testing procedure, test case prioritization is extremely beneficial in software testing phase. It is a process which takes into consideration that no extra efforts are wasted in the process of testing, as it prioritises the test cases that require earlier and extra attention and focus of the team. Other benefits of test prioritization are:
The process of test case prioritization is a difficult one and it requires knowledge of expert and experienced team of testers. Moreover, there are several factors that affect a tester’s decision of choosing a particular prioritization technique. These not only affect the process of testing, but also aim at making the process time and cost effective. Hence, here are some of the major techniques of test case prioritization used by software engineers all around the world.
While executing test case prioritization, the team of testers can encounter several challenges that make the process of testing time consuming and difficult. Therefore, the team of testers are required to pay additional attention to the following mentioned challenges. By taking care of these factors, the testers can initiate safe and secure testing as well as get accurate result. These challenges are:
Test case prioritization is best technique to ensure the effectiveness as well as the quality of a product, during its development and testing process. It is one such method that prioritizes and schedules test cases according their highest and lowest requirement. Through test case prioritization, testers can effectively make sure that the most important test cases are executed first. This way important problems and defects can be found in the software or application as early as possible. Moreover, this testing provides assistance in regression testing and allows testers to order their test cases, so that test cases with highest priority are executed in the testing process, than the lower priority test cases. In short, this subjective and difficult part of testing is about risk management, test planning, and being analytical about the tests that are required to be executed in the context of the project that is specified.