Approach of automated testing generation in regression testing

In general,software regression testing applied existing set of test cases for testing.The critical issue would be how to apply the test case efficaciously.This paper did research on expanding existing set of test case,including to change the executing order of test case automatically and to increase or decrease the numbers of executing test cases.Proposed an approach of generation new set of test case automatically based on existing set of test case.The experiment proves that the new test file can run under the testing environment successfully and implement expanding and reducing the scope of testing as well as the time of testing.It provided a useful automated tool for regression testing.