Abstract
The importance of Software Testing (ST) in the Software Development Life Cycle (SDLC) can never be ignored. Smarter ST can give us more relievable and defect-free products which are as per our stakeholder demand. That is the reason it takes more time and resources. But unfortunately, the limited time has left when the product reached the testing stage, especially in Regression Testing (RT). That is the reason proper planning is required in each SDLC phase, especially in the testing phase. Regression testing is an essential part of the testing phase. It guarantees defect-free software after any changes made to the requirement or software product. Because of the limited time available, it is impossible to execute all the test cases every time any changes made in the code there comes the role of the test case prioritization. TCP chooses only test cases that are most important to execute. The priority of test cases could be based on code, requirement, defects, execution time, cost, etc. After TCP the developer and tester have a minimum test case suite with better coverage in all respects. TCP definitely improves the quality of software and brings the best product within a limited time and cost. In this paper, we have provided a detailed survey of the TCP methodologies. This survey includes 2010 to the most recent studies. In this study, we have select carefully the most recent and relevant study of our topic. (C) 2021 The Authors. Published by IASE.