Common mistakes in tdd can you guess
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Slides for my talk on TDD, the usual mistakes that developers make when practising TDD, the wider issues in TDD and suggestions how to make TDD work better
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The problem with tdd
Dror Helper discusses the potential benefits and challenges of test-driven development (TDD). Some key points made include:
1) TDD involves writing tests before code to ensure functionality is tested and defined up front, though this approach seems counterintuitive to some.
2) Studies show TDD can increase development speed and lower defect rates compared to traditional development methods. However, TDD requires additional time spent writing tests initially.
3) Not all code is easily testable, such as user interfaces, but TDD can still be applied to test business logic. Overall, TDD aims to prevent defects and enable modular, maintainable code through iterative testing.
4) While TDD faces
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This document discusses test driven development (TDD), including that it was created by Kent Beck in 2003 based on concepts from extreme programming. TDD focuses on writing tests before code using cycles of writing a failing test, making it pass, and refactoring. Benefits include more tests and less bugs, higher code quality, and a more modular system, while limitations include needing management support and potential for fake tests. The document provides an example of TDD using JUnit tests for a NameRetriever class.
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Making sure that those guidelines are followed is a difficult task - even if all team members agree to do so, sometimes we simply forget or don't have time to implement the necessary changes.
Once we've agreed on our development guidelines, I was looking for a tool to automate such auditing for our team, so that in the same way as eslint can be used for testing code guidelines based on the rules, we could use this tool to audit our repositories in GitHub organisations. I couldn't find one so I created it.
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The problem with tdd
Dror Helper discusses the potential benefits and challenges of test-driven development (TDD). Some key points made include:
1) TDD involves writing tests before code to ensure functionality is tested and defined up front, though this approach seems counterintuitive to some.
2) Studies show TDD can increase development speed and lower defect rates compared to traditional development methods. However, TDD requires additional time spent writing tests initially.
3) Not all code is easily testable, such as user interfaces, but TDD can still be applied to test business logic. Overall, TDD aims to prevent defects and enable modular, maintainable code through iterative testing.
4) While TDD faces
Test driven development
This document discusses test driven development (TDD), including that it was created by Kent Beck in 2003 based on concepts from extreme programming. TDD focuses on writing tests before code using cycles of writing a failing test, making it pass, and refactoring. Benefits include more tests and less bugs, higher code quality, and a more modular system, while limitations include needing management support and potential for fake tests. The document provides an example of TDD using JUnit tests for a NameRetriever class.
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We think FindBugs is a great tool for finding coding style and best practice types of issues, so we conducted a little experiment a few months ago. We analyzed Jenkins core code with both FindBugs and Coverity. These slides provide a high-level summary of our results.
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Making sure that those guidelines are followed is a difficult task - even if all team members agree to do so, sometimes we simply forget or don't have time to implement the necessary changes.
Once we've agreed on our development guidelines, I was looking for a tool to automate such auditing for our team, so that in the same way as eslint can be used for testing code guidelines based on the rules, we could use this tool to audit our repositories in GitHub organisations. I couldn't find one so I created it.
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TDD and agile methods originated from attempts to manage large software projects more effectively. TDD involves writing automated tests before code to specify requirements and catch errors early. It helps avoid major redesigns later. Tests should fail initially and then code is written to pass the test, followed by refactoring. Patterns like starting simply, faking dependencies, and generalizing from examples help get code passing tests quickly. Pitfalls include not starting with a failing test or refactoring tests improperly. The session covered TDD history and techniques, with examples and opportunities for further learning.
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03 - chomu prohramisty ne testuiut - yurii chulovskyi - it event 2013 (5)
Чи траплялася вам ситуація, коли на ретроспективі, ви домовилися що будете писати тести. І всі розуміють яку користь вони дадуть. Але й після цього тести пишуться дуже рідко.
Ця презентація є спробою знайти причини і роздумом на тему: “Які технічні знання, зміни в технічному і соціальному середовиці необхідні для покращення тестів”.
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http://itevent.if.ua/lecture/chomu-programisti-ne-testuyut
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1. Writing any tests, even quick and easy ones, is better than no tests, as it helps maintain old code with new bugs, hardware/OS, and third party changes.
2. Starting with characterization tests that validate expected failures can help fix complicated algorithms.
3. Writing tests divided by separated tasks and flows, focusing on the main path and avoiding edge cases, can help test legacy code not originally designed for testing.
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Test Driven Development (TDD) provides several benefits over traditional waterfall and iterative development models:
1) It establishes a fast feedback cycle between writing code and writing tests, allowing developers to quickly validate functionality.
2) The automated tests that are written serve as documentation and specifications for the code, giving confidence that changes don't break existing functionality.
3) High test coverage promotes well-designed, loosely-coupled code that is easier to maintain and extend over time.
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TDD and agile methods originated from attempts to manage large software projects more effectively. TDD involves writing automated tests before code to specify requirements and catch errors early. It helps avoid major redesigns later. Tests should fail initially and then code is written to pass the test, followed by refactoring. Patterns like starting simply, faking dependencies, and generalizing from examples help get code passing tests quickly. Pitfalls include not starting with a failing test or refactoring tests improperly. The session covered TDD history and techniques, with examples and opportunities for further learning.
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This document discusses test-driven development (TDD). TDD involves writing tests before code in short cycles of writing tests, code to pass tests, and refactoring. Tests provide clarity about requirements and help discover edge cases early. Tests should be readable and organized with clear setup/teardown. Not all code needs 100% coverage but tests should cover fundamental behaviors. Mocks are used to isolate tests from external dependencies for performance. Behavior-driven development groups tests by behaviors and scenarios to connect similar functionality. The goals of TDD are for tests to be profitable, help maintainability, provide common understanding of behaviors, and ensure quality.
03 - chomu prohramisty ne testuiut - yurii chulovskyi - it event 2013 (5)
Чи траплялася вам ситуація, коли на ретроспективі, ви домовилися що будете писати тести. І всі розуміють яку користь вони дадуть. Але й після цього тести пишуться дуже рідко.
Ця презентація є спробою знайти причини і роздумом на тему: “Які технічні знання, зміни в технічному і соціальному середовиці необхідні для покращення тестів”.
Юрій Чуловський
http://itevent.if.ua/lecture/chomu-programisti-ne-testuyut
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Talk given to Sydney Ruby (a.k.a. rorosyd) on 8 July, 2014. Inspired by the discussions that ensued from DHH's provocative pronouncement that "TDD is Dead".
Open source bridge testing antipatterns presentation
These are the slides for the presentation I gave on antipatterns used in testing. This was at Open Source Bridge in June of 2011.
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Presentation made to CoastNerds November 2010 by Scott Wallace and Robert Dyball. Entitled "Test Driven Development - A Testing Journey", it describes the path we've started in agile development through test last, test first, TDD, ATDD and on to BDD. (The principles in the presentation apply to any language.)
Code reviews
Star Wars themed slides from my talk about code reviews at VilniusPHP meetup, which was held on Star Wars day - May 4th.
May the force be with you and your code!
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Janet Gregory presented on the mindset change needed for agile testers. She discussed how testers should focus on collaboration, communication, and adding value beyond just finding bugs. Testers need to adopt a mindset of being analytical, curious, and skeptical. Gregory also covered different levels of testing from iteration to release level and techniques like exploratory testing, using examples, and mind mapping. She emphasized the importance of imagination and adapting different testing tools to context.
Thesis week9 2_s1150033
The document proposes using WordNet, an English lexical database, to semantically expand user search queries. It outlines experiments conducted using WordNet to expand query sets for a semantic search engine. The results showed some effective expansions but also problems with execution time.
Thesis week9 s1150033
The document proposes using WordNet, an English lexical database, to semantically expand user search queries. It outlines experiments conducted using WordNet to expand query sets for a semantic search engine. The results showed some effective expansions but also problems with execution time.
Testing strategies for legacy code
The document discusses strategies for testing legacy code, including:
1. Writing any tests, even quick and easy ones, is better than no tests, as it helps maintain old code with new bugs, hardware/OS, and third party changes.
2. Starting with characterization tests that validate expected failures can help fix complicated algorithms.
3. Writing tests divided by separated tasks and flows, focusing on the main path and avoiding edge cases, can help test legacy code not originally designed for testing.
Test Driven Development
Test Driven Development (TDD) provides several benefits over traditional waterfall and iterative development models:
1) It establishes a fast feedback cycle between writing code and writing tests, allowing developers to quickly validate functionality.
2) The automated tests that are written serve as documentation and specifications for the code, giving confidence that changes don't break existing functionality.
3) High test coverage promotes well-designed, loosely-coupled code that is easier to maintain and extend over time.
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This session delves into how these challenges were addressed through:
1. Automate the setup of essential dependencies to ensure a consistent testing environment.
2. Create standardized templates for executing API tests, API workflow tests, and end-to-end tests in the Build pipeline, streamlining the testing process.
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Computer conferences organized by ScienceFather group. ScienceFather takes the privilege to invite speakers participants students delegates and exhibitors from across the globe to its International Conference on computer conferences to be held in the Various Beautiful cites of the world. computer conferences are a discussion of common Inventions-related issues and additionally trade information share proof thoughts and insight into advanced developments in the science inventions service system. New technology may create many materials and devices with a vast range of applications such as in Science medicine electronics biomaterials energy production and consumer products.
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如何办理(hull学位证书)英国赫尔大学毕业证硕士文凭原版一模一样
原版定制【微信:bwp0011】《(hull学位证书)英国赫尔大学毕业证硕士文凭》【微信:bwp0011】成绩单 、雅思、外壳、留信学历认证永久存档查询，采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信bwp0011】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信bwp0011】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
一比一原版(sdsu毕业证书)圣地亚哥州立大学毕业证如何办理
原版一模一样【微信：741003700 】【(sdsu毕业证书)圣地亚哥州立大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(sdsu毕业证书)圣地亚哥州立大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(sdsu毕业证书)圣地亚哥州立大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(sdsu毕业证书)圣地亚哥州立大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(sdsu毕业证书)圣地亚哥州立大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
The Role of DevOps in Digital Transformation.pdf
DevOps plays a crucial role in driving digital transformation by fostering a collaborative culture between development and operations teams. This approach enhances the speed and efficiency of software delivery, ensuring quicker deployment of new features and updates. DevOps practices like continuous integration and continuous delivery (CI/CD) streamline workflows, reduce manual errors, and increase the overall reliability of software systems. By leveraging automation and monitoring tools, organizations can improve system stability, enhance customer experiences, and maintain a competitive edge. Ultimately, DevOps is pivotal in enabling businesses to innovate rapidly, respond to market changes, and achieve their digital transformation goals.
Photoshop Tutorial for Beginners (2024 Edition)
Photoshop Tutorial for Beginners (2024 Edition)
Explore the evolution of programming and software development and design in 2024. Discover emerging trends shaping the future of coding in our insightful analysis."
Here's an overview:Introduction: The Evolution of Programming and Software DevelopmentThe Rise of Artificial Intelligence and Machine Learning in CodingAdopting Low-Code and No-Code PlatformsQuantum Computing: Entering the Software Development MainstreamIntegration of DevOps with Machine Learning: MLOpsAdvancements in Cybersecurity PracticesThe Growth of Edge ComputingEmerging Programming Languages and FrameworksSoftware Development Ethics and AI RegulationSustainability in Software EngineeringThe Future Workforce: Remote and Distributed TeamsConclusion: Adapting to the Changing Software Development LandscapeIntroduction: The Evolution of Programming and Software Development
Photoshop Tutorial for Beginners (2024 Edition)Explore the evolution of programming and software development and design in 2024. Discover emerging trends shaping the future of coding in our insightful analysis."Here's an overview:Introduction: The Evolution of Programming and Software DevelopmentThe Rise of Artificial Intelligence and Machine Learning in CodingAdopting Low-Code and No-Code PlatformsQuantum Computing: Entering the Software Development MainstreamIntegration of DevOps with Machine Learning: MLOpsAdvancements in Cybersecurity PracticesThe Growth of Edge ComputingEmerging Programming Languages and FrameworksSoftware Development Ethics and AI RegulationSustainability in Software EngineeringThe Future Workforce: Remote and Distributed TeamsConclusion: Adapting to the Changing Software Development LandscapeIntroduction: The Evolution of Programming and Software Development
The importance of developing and designing programming in 2024
Programming design and development represents a vital step in keeping pace with technological advancements and meeting ever-changing market needs. This course is intended for anyone who wants to understand the fundamental importance of software development and design, whether you are a beginner or a professional seeking to update your knowledge.
Course objectives:
1. **Learn about the basics of software development:
- Understanding software development processes and tools.
- Identify the role of programmers and designers in software projects.
2. Understanding the software design process:
- Learn about the principles of good software design.
- Discussing common design patterns such as Object-Oriented Design.
3. The importance of user experience (UX) in modern software:
- Explore how user experience can improve software acceptance and usability.
- Tools and techniques to analyze and improve user experience.
4. Increase efficiency and productivity through modern development tools:
- Access to the latest programming tools and languages used in the industry.
- Study live examples of applications
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Common mistakes in tdd can you guess
- 1. Common mistakes in TDD - can you guess?
- 3. What is Test Driven Development (TDD)?
- 4. What TDD isn’t •TDD tests are not Unit Tests •TDD tests are not User Acceptance Tests
- 5. What does TDD have to offer? • Small pieces of code • Short feedback loop • Helps create design specification • Reduces time to do bug fixes and add new features • Reduces debugger-driven development • Makes the code more adaptable
- 6. Common TDD mistakes #1 Not using a Mocking Framework
- 7. Common TDD mistakes #2 Too much test setup
- 8. Common TDD mistakes #3 Asserting everything
- 9. Common TDD mistakes #4 Unnecessary testing
- 10. Unnecessary testing - example public class StudentService() { //….other code ommitted public Student GetByID(string id) { return studentRepository.GetByID(id); } }
- 11. Larger issues with TDD #1 False confidence
- 12. Larger issues with TDD #2 Testing too much is expensive
- 13. Larger issues with TDD #3 Test induced architecture damage
- 14. Larger issues with TDD #4 Heavy Mocking
- 15. Larger issues with TDD #5 TDD in the real world
- 16. Larger issues with TDD #6 No everyone can think in TDD terms
- 17. Make TDD work for you Use the right tool for the job
- 18. TDD with Model-View-Controller(MVC) public Controller UserController() { //...other code ommitted public IHttpViewResult GetAllUsers() { return new UserView(userService.GetAllUsers()); } }
- 19. Make TDD work for you • Code-to-test radio => 1:2 • Find the right coverage ratio • Test should take less time to write than actual code • Keep clear separation between unit & integration tests • Find the best approach to code first (30:70?
- 20. Questions?
Editor's Notes
- Barclays example.
- TDD mandate should not dictate.
- Obsessed with Green Testing has cost
- The MAXIM of TDD Do the simplest thing that could possibly work Needless indirection, conceptual overhead Unnecessary Friction Architect story