Improving Test Quality by a Test Type Analysis Based Method

This paper describes an easy adapted method of improving test coverage and effectiveness in an on-going industrial project by introducing and applying ’test type’ into test case design and execution. It presents comparison results of the number of system test item, effectiveness of test cases, and defect detection percentage between two increments in a real-world telecom project. It argues the importance of carrying out a test type analysis approach for test design, and proved a better test effectiveness (improved 5%) and DDP(improved 14%) can be performed by implementing the proposed approach. There was only a slightly increase of the budget after adapting the approach.