Svelte With Test Driven Development

Build robust and performant applications by developing SvelteKit applications using automated testing and TDD techniques, including unit and end-to-end testing, custom matchers, component mocking, and authentication Purchase of the print or Kindle book includes a free PDF eBook Key Features Understand and master the test-driven development (TDD) workflow Explore the principles of unit testing with Vitest and end-to-end testing using Playwright and Cucumber.js Leverage practical examples of unit tests covering a range of SvelteKit framework features Book Description Svelte is a popular front-end framework used for its focus on performance and user-friendliness, and test-driven development (TDD) is a powerful approach that helps in creating automated tests before writing code. By combining them, you can create efficient, maintainable code for modern applications. Svelte with Test-Driven Development will help you learn effective automated testing practices to build and maintain Svelte applications. In the first part of the book, you'll find a guided walkthrough on building a SvelteKit application using the TDD workflow. You'll uncover the main concepts for writing effective unit test cases and practical advice for developing solid, maintainable test suites that can speed up application development while remaining effective as the application evolves. In the next part of the book, you'll focus on refactoring and advanced test techniques, such as using component mocks and writing BDD-style tests with the Cucumber.js framework. In the final part of the book, you'll explore how to test complex application and framework features, including authentication, Svelte stores, and service workers. By the end of this book, you'll be well-equipped to build test-driven Svelte applications by employing theoretical and practical knowledge. What you will learn Create clear and concise Vitest unit tests helping the implementation of Svelte components Use Playwright and Cucumber.js to develop end-to-end tests that simulate user interactions and test the functionality of your application Leverage component mocks to isolate and test individual components Write unit tests for a range of Svelte framework features Explore effective refactoring techniques to keep your Svelte application code and test suites clean Build high-quality Svelte applications that are well-tested, performant, and resilient to changes Who this book is for This book is an essential guide for Svelte developers seeking to enhance their development process by learning the TDD workflow and its application. Whether you are an experienced developer or new to automated testing, this book helps you gain a practical approach to improving your workflow. The examples are written in JavaScript, making them accessible to all developers, including TypeScript developers.

Build robust and performant applications by developing SvelteKit applications using automated testing and TDD techniques, including unit and end-to-end testing, custom matchers, component mocking, and authentication Purchase of the print or Kindle book includes a free PDF eBook Key Features: Understand and master the test-driven development (TDD) workflow Explore the principles of unit testing with Vitest and end-to-end testing using Playwright and Cucumber.js Leverage practical examples of unit tests covering a range of SvelteKit framework features Book Description: Svelte is a popular front-end framework used for its focus on performance and user-friendliness, and test-driven development (TDD) is a powerful approach that helps in creating automated tests before writing code. By combining them, you can create efficient, maintainable code for modern applications. Svelte with Test-Driven Development will help you learn effective automated testing practices to build and maintain Svelte applications. In the first part of the book, you'll find a guided walkthrough on building a SvelteKit application using the TDD workflow. You'll uncover the main concepts for writing effective unit test cases and practical advice for developing solid, maintainable test suites that can speed up application development while remaining effective as the application evolves. In the next part of the book, you'll focus on refactoring and advanced test techniques, such as using component mocks and writing BDD-style tests with the Cucumber.js framework. In the final part of the book, you'll explore how to test complex application and framework features, including authentication, Svelte stores, and service workers. By the end of this book, you'll be well-equipped to build test-driven Svelte applications by employing theoretical and practical knowledge. What You Will Learn: Create clear and concise Vitest unit tests helping the implementation of Svelte components Use Playwright and Cucumber.js to develop end-to-end tests that simulate user interactions and test the functionality of your application Leverage component mocks to isolate and test individual components Write unit tests for a range of Svelte framework features Explore effective refactoring techniques to keep your Svelte application code and test suites clean Build high-quality Svelte applications that are well-tested, performant, and resilient to changes Who this book is for: This book is an essential guide for Svelte developers seeking to enhance their development process by learning the TDD workflow and its application. Whether you are an experienced developer or new to automated testing, this book helps you gain a practical approach to improving your workflow. The examples are written in JavaScript, making them accessible to all developers, including TypeScript developers.

Learn how to leverage the officially supported Svelte framework to build faster and more powerful web applications by following along with real-world scenarios. Key Features Develop JavaScript applications with an intuitive and beginner-friendly framework Grasp the core concepts of SvelteKit effortlessly with real-world examples Discover how SvelteKit minimizes obstacles in building modern web applications, enhancing productivity and efficiency Book DescriptionThe JavaScript ecosystem has grown vast, complex, and daunting for newcomers. Fortunately, SvelteKit has emerged, simplifying the process of building JavaScript-based web applications. This book aims to demystify SvelteKit, making it as approachable as it makes web app development. With SvelteKit Up and Running you’ll be introduced to the philosophy and technologies underlying SvelteKit. First, you’ll follow a standard educational programming approach, progressing to a 'Hello World' application. Next, you’ll explore the fundamental routing techniques, data loading management, and user submission, all through real-world scenarios commonly encountered in day-to-day development, before discovering various adapters employed by SvelteKit to seamlessly integrate with diverse environments. You’ll also delve into advanced concepts like dynamic route management, error handling, and leveraging SvelteKit to optimize SEO and accessibility. By the end of this book, you’ll have mastered SvelteKit and will be well-equipped to navigate the complexities of web app development.What you will learn Gain a comprehensive understanding of the core technologies of SvelteKit Dive deep into SvelteKit's file-based routing system and uncover basic and advanced concepts Master code organization in SvelteKit through effective data-loading techniques Elevate your application's visibility by incorporating SEO and accessibility Streamline the deployment process of your SvelteKit apps by using adapters Optimize your SvelteKit app by exploring various configuration and tooling options Who this book is forThis book is for web developers aiming to enhance their SvelteKit skills. Whether you're selecting your first JavaScript framework or seeking to stand out among job applicants by adding the latest technology to your resume, this book is your ultimate guide to becoming a SvelteKit master. A solid understanding of HTML, CSS, JavaScript, and Svelte is a must.

Develop applications for the real world with a thorough software testing approach Key Features Develop a thorough understanding of TDD and how it can help you develop simpler applications with no defects using C# and JavaScript Adapt to the mindset of writing tests before code by incorporating business goals, code manageability, and other factors Make all your software units and modules pass tests by analyzing failed tests and refactoring code as and when required Book Description Test-Driven Development (TDD) is a methodology that helps you to write as little as code as possible to satisfy software requirements, and ensures that what you've written does what it's supposed to do. If you're looking for a practical resource on Test-Driven Development this is the book for you. You've found a practical end-to-end guide that will help you implement Test-Driven Techniques for your software development projects. You will learn from industry standard patterns and practices, and shift from a conventional approach to a modern and efficient software testing approach in C# and JavaScript. This book starts with the basics of TDD and the components of a simple unit test. Then we look at setting up the testing framework so that you can easily run your tests in your development environment. You will then see the importance of defining and testing boundaries, abstracting away third-party code (including the .NET Framework), and working with different types of test double such as spies, mocks, and fakes. Moving on, you will learn how to think like a TDD developer when it comes to application development. Next, you'll focus on writing tests for new/changing requirements and covering newly discovered bugs, along with how to test JavaScript applications and perform integration testing. You’ll also learn how to identify code that is inherently un-testable, and identify some of the major problems with legacy applications that weren’t written with testability in mind. By the end of the book, you’ll have all the TDD skills you'll need and you’ll be able to re-enter the world as a TDD expert! What you will learn The core concepts of TDD Testing in action with a real-world case study in C# and JavaScript using React Writing proper Unit Tests and testable code for your application Using different types of test double such as stubs, spies, and mocks Growing an application guided by tests Exploring new developments on a green-field application Mitigating the problems associated with writing tests for legacy applications Modifying a legacy application to make it testable Who this book is for This book is for software developers with a basic knowledge of Test Driven Development (TDD) who want a thorough understanding of how TDD can benefit them and the applications they produce. The examples in this book are in C#, and you will need a basic understanding of C# to work through these examples.

Elevate your testing game to the next level using advanced techniques and proven strategies with this book for WebdriverIO beginners and automation pros alike Key Features Improve your coding skills and empower your automation journey Leverage self-healing objects and adaptive frameworks for cutting-edge WebdriverIO automation Overcome script stability challenges and ensure robust, dependable test execution Purchase of the print or Kindle book includes a free PDF eBook Book DescriptionThis book helps you embark on a comprehensive journey to master the art of WebdriverIO automation, from installation through to advanced framework development. You’ll start by following step-by-step instructions on installing WebdriverIO, configuring Node packages, and creating a simple test. Here you’ll gain an understanding of the mechanics while also learning to add reporting and screen captures to your test results to enhance your test case documentation. In the next set of chapters, you’ll delve into the intricacies of configuring and developing robust method wrappers, a crucial skill for supporting multiple test suites. The book goes beyond the basics, exploring testing techniques tailored for Jenkins as well as LambdaTest cloud environments. As you progress, you’ll gain a deep understanding of both TypeScript and JavaScript languages and acquire versatile coding skills. By the end of this book, you’ll have developed the expertise to construct a sophisticated test automation framework capable of executing an entire suite of tests using WebdriverIO in either TypeScript or JavaScript, as well as excel in your test automation endeavors and deliver reliable, efficient testing solutions.What you will learn Discover techniques to efficiently maintain and enhance your Page Object Model, saving time and effort Gain insight into diagnosing and resolving script instability issues to ensure reliable test execution Improve test resilience by building objects that adapt to changing element locators Enhance your testing productivity by learning to write effective test cases with TypeScript Explore strategies for comprehensive result analysis to enable data-driven decision-making Develop frameworks that adapt to evolving user journeys, ensuring long-term test sustainability Who this book is forWhether you are a novice software development engineer in test (SDET) joining your first WebdriverIO automation project building test cases in TypeScript, or a seasoned lead framework architect experienced in solutioning daily test automation challenges, this book is for you. This book will also help developers and framework architects with basic knowledge of JavaScript or TypeScript who are looking to gain expertise in functional frontend testing. A basic understanding of CSS and XPath will help you get the most out of this book.

For JavaScript developers working on increasingly large and complex projects, effective automated testing is crucial to success. Test-Driven JavaScript Development is a complete, best-practice guide to agile JavaScript testing and quality assurance with the test-driven development (TDD) methodology. Leading agile JavaScript developer Christian Johansen covers all aspects of applying state-of-the-art automated testing in JavaScript environments, walking readers through the entire development lifecycle, from project launch to application deployment, and beyond. Using real-life examples driven by unit tests, Johansen shows how to use TDD to gain greater confidence in your code base, so you can fearlessly refactor and build more robust, maintainable, and reliable JavaScript code at lower cost. Throughout, he addresses crucial issues ranging from code design to performance optimization, offering realistic solutions for developers, QA specialists, and testers. Coverage includes • Understanding automated testing and TDD • Building effective automated testing workflows • Testing code for both browsers and servers (using Node.js) • Using TDD to build cleaner APIs, better modularized code, and more robust software • Writing testable code • Using test stubs and mocks to test units in isolation • Continuously improving code through refactoring • Walking through the construction and automated testing of fully functional software The accompanying Web site, tddjs.com, contains all of the book’s code listings and additional resources.

Your code is a testament to your skills as a developer. No matter what language you use, code should be clean, elegant, and uncluttered. By using test-driven development (TDD), you'll write code that's easy to understand, retains its elegance, and works for months, even years, to come. With this indispensable guide, you'll learn how to use TDD with three different languages: Go, JavaScript, and Python. Author Saleem Siddiqui shows you how to tackle domain complexity using a unit test-driven approach. TDD partitions requirements into small, implementable features, enabling you to solve problems irrespective of the languages and frameworks you use. With Learning Test-Driven Development at your side, you'll learn how to incorporate TDD into your regular coding practice. This book helps you: Use TDD's divide-and-conquer approach to tame domain complexity Understand how TDD works across languages, testing frameworks, and domain concepts Learn how TDD enables continuous integration Support refactoring and redesign with TDD Learn how to write a simple and effective unit test harness in JavaScript Set up a continuous integration environment with the unit tests produced during TDD Write clean, uncluttered code using TDD in Go, JavaScript, and Python

You work in a loop: write code, get feedback, iterate. The faster you get feedback, the faster you can learn and become a more effective developer. Test-Driven React helps you refine your React workflow to give you the feedback you need as quickly as possible. Write strong tests and run them continuously as you work, split complex code up into manageable pieces, and stay focused on what's important by automating away mundane, trivial tasks. Adopt these techniques and you'll be able to avoid productivity traps and start building React components at a stunning pace!