I pasted screenshots below on this paper and I just need help writing a page ess
ID: 3715610 • Letter: I
Question
I pasted screenshots below on this paper and I just need help writing a page essay on it for my software engineering class.
Does Test-Driven Development Really Improve Software Design Quality? David S. Janzen, California Polytechnic State University, San Luis Obispo Hossein Saiedian, University of Kansas oftware developers are known for adopting new technologies and practices on the basis of their novelty or anecdotal evidence of their promise. Who can blame them? With constant pressure to produce more with less, we often can't wait for evidence foremost a design practice. The question is, how good are the resulting designs? Empirical studies help clarify the practice and answercommon association this question. re jumping in. We become convinced that competition won't let us wait. Advocates for test-driven development claim who were using TDD and willing to participate in that TDD produces code that's simpler, more co the study. We interviewed representatives from four hesive, and less coupled than code developed in a reputable Fortune 500 companies who claimed to be more traditional test-last way. Support for TDD is using TDD. However, when we dug a little deeper, growing in many development contexts beyond its we discovered some unfortunate misconceptions: Examples such as Robert C. Martin's bowling game Misconception #1: TDD equals automated test- demonstrate the clean and sometimes surprising deing. Some developers we met placed a heavy signs that can emerge with TDD, and the buzz hasmphasis on automated testing. Because TDD proven sufficient for many software developers to has helped propel automated testing to the fore- try it. Positive personal experiences have led many front, many seem to think that TDD is only to add TDD to their list of "best practices," but for about writing automated tests. others, the jury is still out. And although the litera- Misconception #2: TDD means write all tests ture includes many publications that teach us howist. Some developers thought that TDD in- to do TDD, it includes less empirical evaluation of volved writing the tests all the tests) first, rather than using the short, rapid test-code it- the results In 2004, we began a study to collect evidence or question the claims re- erations of TDD. garding TDD's influence on software. Unfortunately, these perspectives miss TDD's pri- mary purpose, which is design. Granted, the tests are important, and automated test suites that can run at the click of a button are great. However, TDD misconceptions We looked for professional development teamsExplanation / Answer
Test Driven Development , started its roots in Extreme Programming (XP) approach. After a decade, it became a popular method by itself. TDD was initially called “Test First Programming”. Simple essence of Test Driven Development is to write tests before the code is written. First, unit tests are written from the requirements. These tests will definitely fail because the code for it has not been written. In order to write the tests, it is necessary for the developer to understand the requirements well. Then, code that run the test case is written. The code that is written should be just enough so that the tests pass, no more, no less. This means that no prediction about the future story must be make. Test driven approach is best approach. This means that code is written at that time from the user point of requirements without making any assumptions or predictions about future. After writing the code, the tests are run and seen if they succeed. If they do, then programmer can be assured that the requirements were met. After this, a process called refactoring is done. This refers to improving the quality of code and removing any duplication in the code. If the design is changed for the better, the developer can be sure he is not breaking any functionality by running the tests again.