Rspec Essentials
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Rspec Essentials
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Author : Mani Tadayon
language : en
Publisher: Packt Publishing Ltd
Release Date : 2016-04-21
Rspec Essentials written by Mani Tadayon and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-21 with Computers categories.
Develop testable, modular, and maintainable Ruby software for the real world using RSpec About This Book Explore the concept of testability and how to implement tests that deliver the most value Maximize the quality of your Ruby code through a wide variety of tests Master the real-world tradeoffs of testing through detailed examples supported by in-depth discussion Who This Book Is For This book is aimed at the software engineer who wants to make their code more reliable and their development process easier. It is also aimed at test engineers who need to automate the testing of complex systems. Knowledge of Ruby is helpful, but even someone new to the language should find it easy to follow the code and tests. What You Will Learn Identify a unit of software for the purposes of testing Manage test states with hooks, fixtures, and mocks Handle external web services in tests using various techniques Configure RSpec flexibly and cleanly using support code and environment variables Interact with rich web apps in tests using Capybara Build the right feature with behavior-driven development Customize matchers and failure messages Verify correct development and production environments In Detail This book will teach you how to use RSpec to write high-value tests for real-world code. We start with the key concepts of the unit and testability, followed by hands-on exploration of key features. From the beginning, we learn how to integrate tests into the overall development process to help create high-quality code, avoiding the dangers of testing for its own sake. We build up sample applications and their corresponding tests step by step, from simple beginnings to more sophisticated versions that include databases and external web services. We devote three chapters to web applications with rich JavaScript user interfaces, building one from the ground up using behavior-driven development (BDD) and test-driven development (TDD). The code examples are detailed enough to be realistic while simple enough to be easily understood. Testing concepts, development methodologies, and engineering tradeoffs are discussed in detail as they arise. This approach is designed to foster the reader's ability to make well-informed decisions on their own. Style and approach This comprehensive tutorial is packed with real-world examples of testing with RSpec. The most important features of RSpec are introduced in the early chapters and are used in examples of growing complexity in the following chapters. Concepts and methodologies are discussed in detail.
Rspec Essentials
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Author : Mani Tadayon
language : en
Publisher: Packt Publishing
Release Date : 2016-04-20
Rspec Essentials written by Mani Tadayon and has been published by Packt Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-20 with Computers categories.
Develop testable, modular, and maintainable Ruby software for the real world using RSpecAbout This Book- Explore the concept of testability and how to implement tests that deliver the most value- Maximize the quality of your Ruby code through a wide variety of tests- Master the real-world tradeoffs of testing through detailed examples supported by in-depth discussionWho This Book Is ForThis book is aimed at the software engineer who wants to make their code more reliable and their development process easier. It is also aimed at test engineers who need to automate the testing of complex systems. Knowledge of Ruby is helpful, but even someone new to the language should find it easy to follow the code and tests.What You Will Learn- Identify a unit of software for the purposes of testing- Manage test states with hooks, fixtures, and mocks- Handle external web services in tests using various techniques- Configure RSpec flexibly and cleanly using support code and environment variables- Interact with rich web apps in tests using Capybara- Build the right feature with behavior-driven development- Customize matchers and failure messages- Verify correct development and production environmentsIn DetailThis book will teach you how to use RSpec to write high-value tests for real-world code. We start with the key concepts of the unit and testability, followed by hands-on exploration of key features. From the beginning, we learn how to integrate tests into the overall development process to help create high-quality code, avoiding the dangers of testing for its own sake.We build up sample applications and their corresponding tests step by step, from simple beginnings to more sophisticated versions that include databases and external web services. We devote three chapters to web applications with rich JavaScript user interfaces, building one from the ground up using behavior-driven development (BDD) and test-driven development (TDD).The code examples are detailed enough to be realistic while simple enough to be easily understood. Testing concepts, development methodologies, and engineering tradeoffs are discussed in detail as they arise. This approach is designed to foster the reader's ability to make well-informed decisions on their own.Style and approachThis comprehensive tutorial is packed with real-world examples of testing with RSpec. The most important features of RSpec are introduced in the early chapters and are used in examples of growing complexity in the following chapters. Concepts and methodologies are discussed in detail.
Rails Essentials
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Author : Richard Johnson
language : en
Publisher: HiTeX Press
Release Date : 2025-05-30
Rails Essentials written by Richard Johnson and has been published by HiTeX Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-05-30 with Computers categories.
"Rails Essentials" "Rails Essentials" is an indispensable guide for developers seeking mastery over Ruby on Rails, whether building robust web applications from the ground up or refining large-scale projects. Covering core concepts such as the Rails philosophy of convention over configuration, the application boot process, modular architecture, and seamless integration with Rack and middleware, this comprehensive work ensures readers understand both the fundamentals and the sophisticated mechanisms that underpin every Rails application. With detailed insight into project structure, secrets management, and dependency strategies, the book equips teams with practices to create maintainable and scalable codebases. Venturing beyond the basics, "Rails Essentials" provides authoritative coverage of advanced topics including ActiveRecord’s ORM capabilities, optimized query strategies, schema evolution, and integration with both SQL and NoSQL data sources. It elucidates the intricate request lifecycle, RESTful routing, controller design, and view rendering patterns using ERB, Haml, Slim, and Hotwire’s latest advances. Extensive chapters on software quality introduce systematic testing approaches, from fast unit tests to real-time feature validation, paired with thorough explorations of test data management, CI/CD, and code quality metrics. Security, performance, and deployment are addressed as first-class concerns, with hands-on guidance for authentication, authorization, vulnerability mitigation, background processing, and real-time system architecture. Readers will also learn best practices for scaling, production monitoring, zero-downtime deployments, and leveraging service-oriented architecture. The final chapters empower developers to extend Rails through engines, custom generators, and cutting-edge patterns, making "Rails Essentials" a definitive reference for modern Rails practitioners striving for technical excellence.
Capybara Essentials
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Author : Richard Johnson
language : en
Publisher: HiTeX Press
Release Date : 2025-06-05
Capybara Essentials written by Richard Johnson and has been published by HiTeX Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-05 with Computers categories.
"Capybara Essentials" Capybara Essentials is a comprehensive guidebook meticulously crafted for developers, test engineers, and automation architects seeking to master the art and science of end-to-end web application testing with Capybara. From foundational concepts—including Capybara’s role in the modern testing ecosystem, architectural underpinnings, and the spectrum of supported drivers—to the nuances of advanced session management, asynchronous interaction, and dynamic UI handling, this book distills years of real-world expertise into practical guidance and actionable techniques. Best practices for structuring enterprise-grade test suites, integrating with popular frameworks, and optimizing installation in varying environments are thoroughly explored, helping teams to lay robust foundations and scale with confidence. Moving beyond fundamentals, Capybara Essentials delves into the intricacies of selectors, element strategies, browser drivers, and the trade-offs between headless and headed executions. Readers will discover how to architect maintainable, efficient test suites using industry patterns like the Page Object and Screenplay models, build resilient custom selectors, and ensure determinism in the face of flakiness, performance bottlenecks, and environmental inconsistencies. Extensive sections cover parallel execution, test data management, comprehensive assertions across both visual and non-visual behaviors, and cutting-edge integration with QA tooling—empowering practitioners to both maintain test reliability and drive continuous delivery pipelines with confidence. The book culminates in advanced customization, extensibility patterns, and foresight into the future of Capybara and web automation itself. Readers of Capybara Essentials will not only learn how to craft reusable plugins, extend capabilities for accessibility and localization, and enforce privacy and compliance, but also how to leverage emerging trends like AI-driven testing, cloud-native execution, and community-driven innovation. With case studies, anti-patterns, and sustainability strategies, this is the definitive resource for those committed to advancing Capybara automation in complex, evolving web landscapes.
Rake Task Management Essentials
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Author : Andrey Koleshko
language : en
Publisher: Packt Publishing Ltd
Release Date : 2014-04-21
Rake Task Management Essentials written by Andrey Koleshko and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-21 with Computers categories.
A step-by-step and interactive approach explaining the Rake essentials along with code examples and advanced features. If you are a developer who is acquainted with the Ruby language and want to speed up writing the code concerned with files, then this book is for you. To start reading this book, basic Ruby knowledge is required; however, a huge amount of experience with the language is not necessary.
Logstash Essentials
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Author : Richard Johnson
language : en
Publisher: HiTeX Press
Release Date : 2025-06-15
Logstash Essentials written by Richard Johnson and has been published by HiTeX Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-15 with Computers categories.
"Logstash Essentials" "Logstash Essentials" is a comprehensive guide for engineers, architects, and practitioners seeking to master the robust capabilities of Logstash within modern data pipelines. From foundational principles to advanced architecture, this book navigates the internal workings of Logstash pipelines, plugin ecosystems, and the nuanced configuration DSL that underpins reliable, scalable event processing. Readers will explore high-performance input strategies for ingesting data from diverse sources—such as syslog, HTTP, Kafka, and Beats—and learn how to develop custom plugins to extend and tailor Logstash to fit any environment. Delving deeper, the book provides an expert’s perspective on sophisticated event processing, including advanced parsing, dynamic enrichment, sensitive data redaction, and complex conditional logic for real-world requirements. Detailed chapters on output optimization examine Elasticsearch internals, integration with distributed queues, delivery guarantees, and building resilient, high-throughput pipelines. Throughout, readers will find guidance for performance tuning, horizontal scaling, disaster recovery, and ensuring compliance with security best practices, including end-to-end encryption, access controls, and audit logging. With a strong emphasis on observability, troubleshooting, automation, and future trends, "Logstash Essentials" equips professionals to monitor pipeline health, visualize data movements, automate deployments, and integrate seamlessly with broader ecosystems such as Elasticsearch, Kibana, SIEM, and emerging technologies like OpenTelemetry. Real-world use cases highlight Logstash’s transformative role in serverless, AI/ML, IoT, and security analytics—making this book an indispensable reference for building resilient, next-generation data infrastructure.
Puppet Configuration Management Essentials
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Author : Richard Johnson
language : en
Publisher: HiTeX Press
Release Date : 2025-05-23
Puppet Configuration Management Essentials written by Richard Johnson and has been published by HiTeX Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-05-23 with Computers categories.
"Puppet Configuration Management Essentials" "Puppet Configuration Management Essentials" provides a comprehensive and insightful exploration into mastering configuration management using Puppet. Beginning with foundational concepts, the book introduces readers to the modern landscape of configuration management in distributed systems and unpacks Puppet’s declarative model and robust architecture. Detailed examinations of Puppet's internal workings, security model, and the larger ecosystem equip practitioners with the architectural understanding necessary to confidently deploy and manage infrastructure as code at scale. Progressing into the technical core, the book takes an in-depth approach to Puppet’s unique language constructs, promoting advanced code reuse, strong type safety, and customization through functions and resource management techniques. It guides readers through building scalable modules, parameterization, effective use of roles and profiles, robust versioning, and module testing—ensuring manageability and quality across evolving Puppet codebases. A special focus on Hiera elevates expertise in data abstraction, secure secrets management, and context-driven configuration, all indispensable for dynamically managed infrastructures. The latter chapters extend beyond fundamentals to address the realities of operating Puppet in large and complex organizations. Readers learn best practices for testing, validation, and continuous integration, along with strategies for scaling Puppet masters, orchestrating code deployment, ensuring compliance, and bolstering disaster recovery. Practical guidance in modern integrations—multi-cloud, containers, CI/CD, and event-driven workflows—ensures applicability to current operational demands. Advanced topics in security, auditability, automation, and extending Puppet’s capabilities round out this essential reference for both aspiring and experienced infrastructure engineers who seek to automate confidently, securely, and at scale.
Beginning Ruby
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Author : Peter Cooper
language : en
Publisher: Apress
Release Date : 2017-01-11
Beginning Ruby written by Peter Cooper and has been published by Apress this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-11 with Computers categories.
Based on the bestselling first edition, Beginning Ruby: From Novice to Professional, Second Edition is the leading guide for every type of reader who wants to learn Ruby from the ground up. The new edition of this book provides the same excellent introduction to Ruby as the first edition plus updates for the newest version of Ruby, including the addition of the Sinatra and Ramaze web application frameworks and a chapter on GUI development so developers can take advantage of these new trends. Beginning Ruby starts by explaining the principles behind object-oriented programming and within a few chapters builds toward creating a full Ruby application. By the end of the book, in addition to in-depth knowledge of Ruby, you'll also have basic understanding of many ancillary technologies such as SQL, XML, web frameworks, and networking. Introduces readers to the Ruby programming language Takes readers from basic programming skills to web development with topics like Ruby-based frameworks and GUI programming Covers many ancillary technologies in order to provide a broader picture (e.g., databases, XML, network daemons)
Puppet 4 Essentials
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Author : Felix Frank
language : en
Publisher: Packt Publishing Ltd
Release Date : 2015-12-11
Puppet 4 Essentials written by Felix Frank and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-11 with Computers categories.
Acquire skills to manage your IT infrastructure effectively with Puppet About This Book Breeze through Puppet 4's key features and performance improvements to bring real advantage to your IT infrastructure Discover Puppet best practices to help you avoid common mistakes and pitfalls Blitz through easy-to-follow examples to get to grips with Puppet and succeed with everyday IT automation Who This Book Is For If you're an experienced IT professional and a new Puppet user, this book will provide you with all you need to know to go from installation to advanced automation in no time at all. Get a rapid introduction to the essential topics and then tackle Puppet for advanced automation. What You Will Learn Write and employ individual Puppet manifests Understand how Puppet implements system abstraction Deploy the Puppet master and agents Leverage and extend Facter to summarize your systems Create modular and reusable Puppet code Extend your code base with publicly available Puppet modules Use the modern features of Puppet 4 Separate logic from data using Hiera In Detail Puppet is a configuration management tool that allows you to automate all your IT configurations, giving you control over what you do to each Puppet Agent in a network, and when and how you do it. In this age of digital delivery and ubiquitous Internet presence, it's becoming increasingly important to implement scalable and portable solutions, not only in terms of software, but also the systems that run it. The free Ruby-based tool Puppet has established itself as the most successful solution to manage any IT infrastructure. Ranging from local development environments through complex data center setups to scalable cloud implementations, Puppet allows you to handle them all with a unified approach. Puppet 4 Essentials, Second Edition gets you started rapidly and intuitively as you'll put Puppet's tools to work right away. It will also highlight the changes associated with performance improvements as well as the new language features in Puppet 4. We'll start with a quick introduction to Puppet to get you managing your IT systems quickly. You will then learn about the Puppet Agent that comes with an all-in-one (AIO) package and can run on multiple systems. Next, we'll show you the Puppet Server for high-performance communication and passenger packages. As you progress through the book, the innovative structure and approach of Puppet will be explained with powerful use cases. The difficulties that are inherent to a complex and powerful tool will no longer be a problem for you as you discover Puppet's fascinating intricacies. By the end of the book, you will not only know how to use Puppet, but also its companion tools Facter and Hiera, and will be able to leverage the flexibility and expressive power implemented by their tool chain. Style and approach This quick learning guide for Puppet follows a practical approach, starting with some basic commands that you can use from the shell right away. It comprises a series of examples that will get you familiar with the most important aspects of Puppet in a flash.
Puppet 5 Essentials
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Author : Martin Alfke
language : en
Publisher: Packt Publishing Ltd
Release Date : 2017-09-13
Puppet 5 Essentials written by Martin Alfke and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-13 with Computers categories.
A Guide to managing servers and automation About This Book Breeze through Puppet's key features and performance improvements to bring real advantages to your IT infrastructure Discover Puppet best practices to help you avoid common mistakes and pitfalls Examples to help you get to grips with Puppet and succeed with everyday IT automation Who This Book Is For This book targets experienced IT professionals and new Puppet uses, who will learn all they need to know to go from installation to advanced automation. Get a rapid introduction to the essential topics and learn how to build best practices for advanced automation with Puppet. What You Will Learn Understand declarative configuration management Make use of GIT-based deployment workflows Extend Factor with secure elements Create modular and reusable Puppet code Extend your code base with publicly available Puppet modules Separate logic from data by using Hiera Understand and develop Puppet Roles and Profiles In Detail Puppet is a configuration management tool that allows you to automate all your IT configurations, giving you control over what you do to each Puppet Agent in a network, and when and how you do it. In this age of digital delivery and ubiquitous Internet presence, it's becoming increasingly important to implement scaleable and portable solutions, not only in terms of software, but also the system that runs it. This book gets you started quickly with Puppet and its tools in the right way. It highlights improvements in Puppet and provides solutions for upgrading. It starts with a quick introduction to Puppet in order to quickly get your IT automation platform in place. Then you learn about the Puppet Agent and its installation and configuration along with Puppet Server and its scaling options. The book adopts an innovative structure and approach, and Puppet is explained with flexible use cases that empower you to manage complex infrastructures easily. Finally, the book will take readers through Puppet and its companion tools such as Facter, Hiera, and R10k and how to make use of tool chains. Style and approach This book aims to impart all the knowledge required to tap into not only the basics of Puppet, but also its core. The basic ideas and principles of Puppet-based designs are explored and explained. Sophisticated tools are presented to enable you to use Puppet efficiently and productively.