Test case prioritization involves scheduling test cases in an order that increases the effectiveness in achieving some performance goals. One of the most important performance goals is the rate of fault detection. Test cases should run in an order that increases the possibility of fault detection and also that detects the most severe faults at the earliest in its testing life cycle. A test case prioritization, assigns each test case a selection probability according to its potential ability to achieve some certain testing goal. It selects prioritized test cases to run to get higher testing Performance. Test case prioritization techniques could be of great benefit to increasing the effectiveness of test suites in practice. Test case prioritization is a technique. It helps to increase the rate of fault detection or code. Whereas Regression test prioritization is completed in a time constrained execution environment in which testing occurs for only a fixed time period. Based on test case prioritization using regression testing calculating the efficiency for each test cases. This can support to make a better software product.

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Test Case Regression Testing Test Case Prioritization Error Testing Efficiency