Summary of Xtrem TDD by Example (Yoan Thirion and Guillaume Faas)

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00:00:00 - 01:00:00

This video provides an introduction to the Xtrem TDD methodology, demonstrating how it can be used to improve code quality and efficiency. The presenter shows how to use TDD on a sample project, discussing how it can be used to test existing code and refactor it to introduce new functions.

00:00:00 The speakers present Extreme TDD, a methodology for delivering quality software more quickly. They explain that the name of the methodology is inspired by the acronym "TDD," and that it provides solutions for various developer profiles. The website x20dd.com provides resources for increasing learning for developers.
00:05:00 This video explains how Xtrem TDD (test-driven development) can be used to increase efficiency and improve code quality. The presenter demonstrates a sample project, called "Monikata," which is built using Xtrem TDD.
00:10:00 In this video, Yoan Thirion and Guillaume Faas demonstrate how they use TDD to write code in C Sharp and skeletal. They explain that TDD is a practical approach that is similar to scientific method. They go on to say that every time a test fails, the developer must stop and fix the code before continuing. They also explain that compilation traders are considered normal code.
00:15:00 This video tutorial explains how to use TDD to write code for a financial system. The tutorial begins with an introduction to the problem and the proposed solution, then goes on to show how the TDD process was used to write some code for the system. Finally, the tutorial discusses how to use the code written in the tutorial to test the system.
00:20:00 In this video, Xtrem TDD by Example, Yoan Thirion and Guillaume Faas show how to use mutation testing in order to ensure the quality of code. They start by introducing mutation testing and explaining how it works. They then show how to run a mutation report and explain the results.
00:25:00 The video discusses how to use mutation testing to improve the quality of a software project. Xtrem TDD is a popular mutation testing approach that is explained in detail. Tests are written so that they can be run automatically, and a report is generated that shows how many mutants have survived and how many have been killed.
00:30:00 The video demonstrates how to test a class by example, using the example of a portfolio that includes money. The first step is to create a class to represent the portfolio, and the second step is to add states to the class to represent different amounts of money.
00:35:00 In this video, Yoan Thirion and Guillaume Faas discuss how they implemented a TDD workflow for testing a currency conversion algorithm. They start by creating a simple test that fails due to a typo, and then refactor the code to fix the mistake. They continue by adding a second test that uses a different currency and also fails. They conclude by reflecting on the project and discussing where users can find exchange rates.
00:40:00 In this video, Yoan Thirion and Guillaume Faas demonstrate how to use TDD with Xtrem. They start by creating a bank with ex and then use it to convert Euros to USD. They then refactor the code to use the bank only in the evaluate method, and the tests still pass.
00:45:00 The video discusses how the team at a software company worked to improve their testing process by implementing TDD and primitive obsession sessions. The team found that they needed to change some of their tests to be more generic in order to work better with their money-based business concept.
00:50:00 The video explains how to calculate the cyclometric complexity of a method, and shows an example of how to do it. It then goes on to explain how to use this information to decide where to use the method.
00:55:00 The video demonstrates how to use TDD on existing code by refactoring and introducing new functions.

01:00:00 - 01:35:00

In the video, Yoan Thirion and Guillaume Faas discuss how to apply "Xtrem TDD" in order to speed up development. They cover the basics of Xtrem TDD, including how to use property-based testing and how to implement variance and invariance. The video also discusses the importance of following TDD guidelines, and provides an example of when not to follow TDD guidelines.

01:00:00 The video tutorial explains how Xtrem TDD can help you better understand your business. It covers the basics of Xtrem TDD, including how to use property-based testing and how to implement variance and invariance.
01:05:00 The video discusses the use of TDD and automation in order to speed up development. Xtrem TDD by Example demonstrates a few different TDD techniques, including using function-based testing and automated testing coverage.
01:10:00 In this video, Yoan Thirion and Guillaume Faas discuss how to apply TDD and mutation testing. They note that test coverage is not as important as a high mutation score, and that in order to have a good mutation score, you should follow TDD and refactor your code as you go.
01:15:00 The presenter discusses the importance of following TDD guidelines, and how to do so without breaking the code. He also provides an example of when not to follow TDD guidelines.
01:20:00 In this video, Yoan Thirion and Guillaume Faas discuss using a library called Freon for TDD. They explain that they have used a function to call the function and that when they apply the function on the new money, the results of the call should be the same as the results of the function when it was applied on the old money. They also mention that they find records useful for TDD, and that the goal is not to remove the data builders, but to use them in a more generic way. The next video discusses a common idea, but they explain that it is not yet possible to do in pure functional languages. They then move on to the next video, which discusses how to do a cqs in a functional language. They explain that the cqs is being treated as a command and query, but that in the future, they want to be able to demonstrate both function functions and cqs patterns.
01:25:00 The presenter discusses various books and methods for developing software, including technique patterns, refactoring, and unit testing. He suggests that programmers should also read Vladimir Koikov's book on cognitive science to improve their code reading and writing skills.
01:30:00 In this video, Yoan Thirion and Guillaume Faas discuss the basics of TDD and how it can be applied in various contexts. They also introduce the kin architecture, which is a constraint-based design methodology. Finally, they give a brief summary of the session and invite viewers to connect with them on social media.
01:35:00 This video demonstrates the use of "Xtrem TDD" by example. The video discusses how Yoan Thirion and Guillaume Faas developed a web application using this technique.