Simplify Testing with React Testing Library. Create maintainable tests using RTL that do not break with changes

Scottie Crump

React Testing Library (RTL) is a lightweight and easy-to-use tool for testing the document object model (DOM) output of components. This book will show you how to use this modern, user-friendly tool to test React components, reducing the risk that your application will not work as expected in production.The book demonstrates code snippets that will allow you to implement RTL easily, helping you to understand the guiding principles of the DOM Testing Library to write tests from the perspective of the user. You'll explore the advantages of testing components from the perspective of individuals who will actually use your components, and use test-driven development (TDD) to drive the process of writing tests. As you advance, you'll discover how to add RTL to React projects, test components using the Context API, and also learn how to write user interface (UI) end-to-end tests using the popular Cypress library. Throughout this book, you’ll work with practical examples and useful explanations to be able to confidently create tests that don't break when changes are made.By the end of this React book, you will have learned all you need to be able to test React components confidently.

Single Page Web Applications. Programowanie aplikacji internetowych z JavaScript

Michael Mikowski, Josh Powell

Gdy uruchamiasz aplikację na swoim komputerze, tak naprawdę nie wiesz, czy jest to tradycyjna aplikacja działająca na Twoim sprzęcie czy też może aplikacja internetowa. Nie widać przejść między stronami, a atrakcyjny interfejs użytkownika pozwala Ci błyskawicznie wykonać konieczne zadania. Być może za wyświetlanie interfejsu odpowiedzialna jest wyłącznie przeglądarka, która z serwerem komunikuje się tylko w celu wymiany danych. Tak właśnie działają jednostronicowe aplikacje internetowe (ang. Single Page Applications). Jeżeli masz pomysł na taką aplikację, a nie wiesz, od czego zacząć, sięgnij po tę książkę. Dzięki niej zbudujesz swoją pierwszą jednostronicową aplikację internetową oraz poznasz możliwości współczesnego języka JavaScript. W kolejnych rozdziałach będziesz budować aplikację, jednocześnie zdobywając wiedzę na temat wzorca MVC, modelu danych, modułów oraz interfejsu. Kiedy już opanujesz tworzenie klienta, przyjdzie czas na implementację serwera. Jest on odpowiedzialny za przetwarzanie danych otrzymywanych z przeglądarki. W trakcie lektury poznasz możliwości Node.js oraz skonfigurujesz bazę danych. Na sam koniec przygotujesz Twoją aplikację do pracy w środowisku produkcyjnym. Dzięki tej książce: poznasz możliwości języka JavaScript skorzystasz ze wzorca MVC zbudujesz jednostronicową aplikację internetową skonfigurujesz serwer współdziałający z Twoją aplikacją wykorzystasz potencjał Node.js Zbuduj swoją pierwszą jednostronicową aplikację internetową!

Skalowalne witryny internetowe. Budowa, skalowanie i optymalizacja aplikacji internetowych nowej generacji

Cal Henderson

Naucz się tworzyć aplikacje internetowe nowej generacji i dołącz do nurtu Web 2.0 Chcesz tworzyć bardziej wydajne aplikacje internetowe? Chcesz poznać zasady projektowania skalowalnych architektur? Chcesz efektywnie zarządzać danymi w aplikacjach internetowych? Oblicze internetu podlega nieustannym zmianom. Obecnie coraz częściej obok klasycznych witryn internetowych pojawiają się aplikacje internetowe, które charakteryzują się odseparowaniem warstwy danych od warstwy prezentacji. Zmiana modelu programowania wymaga przygotowania odpowiedniej platformy sprzętowej i programowej oraz zaprojektowania nowego systemu obsługi danych. Zastosowanie przy wykonywaniu tych zadań sprawdzonych strategii wykorzystywanych przez pionierów tworzących aplikacje internetowe nowej generacji pozwoli Ci zaoszczędzić czas i koszty. Książka "Skalowalne witryny internetowe..." to zaawansowany i wszechstronny przegląd zagadnień związanych z budowaniem takich właśnie aplikacji internetowych. Pomoże Ci ona w rozwiązaniu problemów i uniknięciu pułapek czyhających na programistów witryn internetowych nowej generacji. Poznasz sprawdzone strategie projektowania architektury oprogramowania, przygotowywania środowiska programistycznego, zapewniania niezawodności aplikacji czy wydajnego zarządzania informacjami. Dowiesz się także, jak tworzyć skalowalne i łatwe w konserwacji witryny, które będą zapewniać komfort pracy niezależnie od upływu czasu i wzrostu liczby użytkowników. Projektowanie architektury aplikacji internetowych Przygotowywanie środowiska programistycznego Tworzenie aplikacji wielojęzycznych Zarządzanie bazami danych Integrowanie poczty elektronicznej z witrynami Stosowanie usług zdalnych Wykrywanie i rozwiązywanie problemów z wydajnością Skalowanie aplikacji internetowych Monitorowanie funkcjonowania aplikacji Korzystanie z interfejsów API

Smarty. Szablony w aplikacjach PHP

H. Hayder, J. P. Maia, L. Gheorge

Wykorzystaj nowoczesne narzędzia w swoich projektach internetowych Projektuj własne szablony Twórz aplikacje wielojęzyczne Popraw wydajność witryn internetowych Współczesne witryny WWW to nie tylko prezentacje podstawowych informacji o firmach. W sieci można znaleźć setki sklepów internetowych, portali informacyjnych i innych serwisów będących samodzielnymi przedsięwzięciami. Coraz częściej strony WWW wykorzystywane są również jako interfejs użytkownika dla aplikacji. Tak rozbudowane projekty internetowe są realizowane przez zespoły składające się z programistów odpowiedzialnych za "zaplecze" serwisu i projektantów, których zadaniem jest opracowanie wyglądu witryny. W takich przypadkach niezbędny jest mechanizm pozwalający na oddzielenie treści i logiki stron WWW od ich prezentacji. Do tego celu stosowane są narzędzia umożliwiające skonstruowanie warstwy prezentacyjnej serwisu WWW w oparciu o szablony. PHP, jeden z najpopularniejszych języków programowania wykorzystywany do tworzenia witryn i aplikacji internetowych, oferuje mechanizm szablonów noszący nazwę Smarty. Książka "Smarty. Szablony w aplikacjach PHP" to kompletny przewodnik po tej technologii. Zawiera zasady działania szablonów Smarty oraz możliwości wykorzystania ich w projektach internetowych. Czytając ją, dowiesz się, jak zainstalować i skonfigurować Smarty, jak zbudowane są witryny oparte o ten system oraz jak kreować własne szablony. Poznasz oferowane przez Smarty funkcje, metody i modyfikatory, które będziesz mógł wykorzystać podczas budowy złożonych projektów. Przeczytasz o buforowaniu, poprawie wydajności aplikacji, rozszerzeniu możliwości Smarty za pomocą wtyczek i tworzeniu aplikacji wielojęzycznych. Instalacja i konfiguracja systemu Smarty Struktura witryny opartej na szablonach Smarty Narzędzia do projektowania szablonów Tworzenie prostych szablonów Korzystanie z modyfikatorów w szablonach Funkcje w szablonach Wykrywanie i usuwanie błędów Buforowanie stron i optymalizacja wydajności witryn Rozbudowywanie Smarty za pomocą wtyczek Poznaj sposoby tworzenia profesjonalnych aplikacji sieciowych.

Social Media for Wordpress: Build Communities, Engage Members and Promote Your Site. A quicker way to build communities, engage members, and promote your site with this book and

Michael Kuhlmann

Socket.IO Cookbook. Over 40 recipes to help you create real-time JavaScript applications using the robust Socket.IO framework

Tyson Cadenhead

Socket.IO is a JavaScript library that provides you with the ability to implement real-time analytics, binary streaming, instant messaging, and document collaboration. It has two parts: a client-side library that runs in the browser, and a server-side library for node.js. Socket.IO is event-driven and primarily uses the WebSocket protocol that allows us to emit data bi-directionally from the server and the client. Socket.IO This book is a complete resource, covering topics from webSocket security to scaling the server-side of a Socket.IO application and everything in between.This book will provide real-world examples of how secure bi-directional, full-duplex connections that can be created using Socket.IO for different environments. It will also explain how the connection vulnerabilities can be resolved for large numbers of users and huge amounts of data/messages.By the end of the book, you will be a competent Socket.IO developer. With the help of the examples and real-world solutions,you will learn to create fast, scalable, and dynamic real-time apps by creating efficient messaging systems between the server side and the client side using Socket.IO.

Software Architecture with C# 12 and .NET 8. Build enterprise applications using microservices, DevOps, EF Core, and design patterns for Azure - Fourth Edition

Gabriel Baptista, Francesco Abbruzzese

Software Architecture with C# 12 and .NET 8 puts high-level design theory to work in a .NET context, teaching you the key skills, technologies, and best practices required to become an effective .NET software architect.This fourth edition puts emphasis on a case study that will bring your skills to life. You’ll learn how to choose between different architectures and technologies at each level of the stack. You’ll take an even closer look at Blazor and explore OpenTelemetry for observability, as well as a more practical dive into preparing .NET microservices for Kubernetes integration.Divided into three parts, this book starts with the fundamentals of software architecture, covering C# best practices, software domains, design patterns, DevOps principles for CI/CD, and more. The second part focuses on the technologies, from choosing data storage in the cloud to implementing frontend microservices and working with Serverless. You’ll learn about the main communication technologies used in microservices, such as REST API, gRPC, Azure Service Bus, and RabbitMQ. The final part takes you through a real-world case study where you’ll create software architecture for a travel agency.By the end of this book, you will be able to transform user requirements into technical needs and deliver highly scalable enterprise software architectures.

Solidity Programming Essentials. A beginner's guide to build smart contracts for Ethereum and blockchain

Ritesh Modi

Solidity is a contract-oriented language whose syntax is highly influenced by JavaScript, and is designed to compile code for the Ethereum Virtual Machine. Solidity Programming Essentials will be your guide to understanding Solidity programming to build smart contracts for Ethereum and blockchain from ground-up.We begin with a brief run-through of blockchain, Ethereum, and their most important concepts or components. You will learn how to install all the necessary tools to write, test, and debug Solidity contracts on Ethereum. Then, you will explore the layout of a Solidity source file and work with the different data types. The next set of recipes will help you work with operators, control structures, and data structures while building your smart contracts. We take you through function calls, return types, function modifers, and recipes in object-oriented programming with Solidity. Learn all you can on event logging and exception handling, as well as testing and debugging smart contracts.By the end of this book, you will be able to write, deploy, and test smart contracts in Ethereum. This book will bring forth the essence of writing contracts using Solidity and also help you develop Solidity skills in no time.

Solidity Programming Essentials. A guide to building smart contracts and tokens using the widely used Solidity language - Second Edition

Ritesh Modi

Solidity is a high-level language for writing smart contracts, and the syntax has large similarities with JavaScript, thereby making it easier for developers to learn, design, compile, and deploy smart contracts on large blockchain ecosystems including Ethereum and Polygon among others. This book guides you in understanding Solidity programming from scratch.The book starts with step-by-step instructions for the installation of multiple tools and private blockchain, along with foundational concepts such as variables, data types, and programming constructs. You’ll then explore contracts based on an object-oriented paradigm, including the usage of constructors, interfaces, libraries, and abstract contracts. The following chapters help you get to grips with testing and debugging smart contracts. As you advance, you’ll learn about advanced concepts like assembly programming, advanced interfaces, usage of recovery, and error handling using try-catch blocks. You’ll also explore multiple design patterns for smart contracts alongside developing secure smart contracts, as well as gain a solid understanding of writing upgradable smart concepts and data modeling. Finally, you’ll discover how to create your own ERC20 and NFT tokens from scratch.By the end of this book, you will be able to write, deploy, and test smart contracts in Ethereum.

Spring 5.0 By Example. Grasp the fundamentals of Spring 5.0 to build modern, robust, and scalable Java applications

Claudio Eduardo de Oliveira

With growing demands, organizations are looking for systems that are robust and scalable. Therefore, the Spring Framework has become the most popular framework for Java development. It not only simplifies software development but also improves developer productivity. This book covers effective ways to develop robust applications in Java using Spring.The book has three parts, where each one covers the building of a comprehensive project in Java and Spring. In the first part, you will construct a CMS Portal using Spring's support for building REST APIs. You will also learn to integrate these APIs with AngularJS and later develop this application in a reactive fashion using Project Reactor, Spring WebFlux, and Spring Data. In the second part, you’ll understand how to build a messaging application, which will consume the Twitter API and perform filtering and transformations. Here, you will also learn about server-sent events and explore Spring’s support for Kotlin, which makes application development quick and efficient. In the last part, you will build a real microservice application using the most important techniques and patterns such as service discovery, circuit breakers, security, data streams, monitoring, and a lot more from this architectural style.By the end of the book, you will be confident about using Spring to build your applications.

Spring 5.0 Cookbook. Recipes to build, test, and run Spring applications efficiently

Sherwin John C.Tragura

The Spring framework has been the go-to framework for Java developers for quite some time. It enhances modularity, provides more readable code, and enables the developer to focus on developing the application while the underlying framework takes care of transaction APIs, remote APIs, JMX APIs, and JMS APIs. The upcoming version of the Spring Framework has a lot to offer, above and beyond the platform upgrade to Java 9, and this book will show you all you need to know to overcome common to advanced problems you might face.Each recipe will showcase some old and new issues and solutions, right from configuring Spring 5.0 container to testing its components. Most importantly, the book will highlight concurrent processes, asynchronous MVC and reactive programming using Reactor Core APIs. Aside from the core components, this book will also include integration of third-party technologies that are mostly needed in building enterprise applications. By the end of the book, the reader will not only be well versed with the essential concepts of Spring, but will also have mastered its latest features in a solution-oriented manner.

Spring 5.0 Microservices. Scalable systems with Reactive Streams and Spring Boot - Second Edition

Rajesh R V

The Spring Framework is an application framework and inversion of the control container for the Java platform. The framework’s core features can be used by any Java application, but there are extensions to build web applications on top of the Java EE platform.This book will help you implement the microservice architecture in Spring Framework, Spring Boot, and Spring Cloud. Written to the latest specifications of Spring that focuses on Reactive Programming, you’ll be able to build modern, internet-scale Java applications in no time. The book starts off with guidelines to implement responsive microservices at scale. Next, you will understand how Spring Boot is used to deploy serverless autonomous services by removing the need to have a heavyweight application server.Later, you’ll learn how to go further by deploying your microservices to Docker and managing them with Mesos. By the end of the book, you will have gained more clarity on the implementation of microservices using Spring Framework and will be able to use them in internet-scale deployments through real-world examples.

Spring 5.0 Projects. Build seven web development projects with Spring MVC, Angular 6, JHipster, WebFlux, and Spring Boot 2

Nilang Patel

Spring makes it easy to create RESTful applications, merge with social services, communicate with modern databases, secure your system, and make your code modular and easy to test. With the arrival of Spring Boot, developers can really focus on the code and deliver great value, with minimal contour.This book will show you how to build various projects in Spring 5.0, using its features and third party tools. We'll start by creating a web application using Spring MVC, Spring Data, the World Bank API for some statistics on different countries, and MySQL database. Moving ahead, you'll build a RESTful web services application using Spring WebFlux framework. You'll be then taken through creating a Spring Boot-based simple blog management system, which uses Elasticsearch as the data store. Then, you'll use Spring Security with the LDAP libraries for authenticating users and create a central authentication and authorization server using OAuth 2 protocol. Further, you'll understand how to create Spring Boot-based monolithic application using JHipster. Toward the end, we'll create an online book store with microservice architecture using Spring Cloud and Net?ix OSS components, and a task management system using Spring and Kotlin.By the end of the book, you'll be able to create coherent and ?exible real-time web applications using Spring Framework.

Spring Boot 2.0 Projects. Build production-grade reactive applications and microservices with Spring Boot

Mohamed Shazin Sadakath

Spring Boot is a lightweight framework that provides a set of tools to create production-grade applications and services. Spring Boot 2.0 Projects is a comprehensive project-based guide for those who are new to Spring, that will get you up to speed with building real-world projects. Complete with clear step-by-step instructions, these easy-to-follow tutorials demonstrate best practices and key insights into building efficient applications with Spring Boot. The book starts off by teaching you how to develop a web application using Spring Boot, followed by giving you an understanding of creating a Spring Boot-based simple blog management system that uses Elasticsearch as the data store. Next, you’ll build a RESTful web services application using Kotlin and the Spring WebFlux framework - a new framework that enables you to create reactive applications in a functional way. Toward the last few chapters, you will build a taxi-hailing API with reactive microservices using Spring Boot, in addition to developing a Twitter clone with the help of a Spring Boot backend. To build on your knowledge further, you’ll also learn how to construct an asynchronous email formatter.By the end of this book, you’ll have a firm foundation in Spring programming and understand how to build powerful, engaging applications in Java using the Spring Boot framework.

Spring: Developing Java Applications for the Enterprise. Build robust applications and microservices with Spring Framework, Spring Boot, and Spring Cloud

Ravi Kant Soni, Rajesh R V, Amuthan Ganeshan

This carefully designed course aims to get you started with Spring, the most widely adopted Java framework, and then goes on to more advanced topics such as building microservices using Spring Boot within Spring. With additional coverage of popular web frameworks such as Struts, WebWork, Java Server Faces, Tapestry, Docker, and Mesos, you'll have all the skills and expertise you need to build great applications. Starting with the Spring Framework architecture and setting up the key components of the Spring Application Development Environment, you will learn how to configure Spring Container and manage Spring beans using XML and Annotation. Next, you will delve into Spring MVC, which will help you build flexible and loosely coupled web applications. You'll also get to grips with testing applications for reliability. Moving on, this course will help you implement the microservice architecture in Spring Framework, Spring Boot, and Spring Cloud. Written to the latest specifications of Spring, this book will help you build modern, Internet-scale Java applications in no time.This Learning Path combines some of the best that Packt has to offer in one complete, curated package. It includes content from the following Packt products:? Learning Spring Application Development by Ravi Kant Soni? Spring MVC Beginner's Guide - Second Edition by Amuthan Ganeshan? Spring Microservices by Rajesh RV

Spring Microservices. Internet-scale architecture with Spring framework, Spring Cloud, Spring Boot

Rajesh R V

The Spring Framework is an application framework and inversion of the control container for the Java platform. The framework's core features can be used by any Java application, but there are extensions to build web applications on top of the Java EE platform. This book will help you implement the microservice architecture in Spring Framework, Spring Boot, and Spring Cloud. Written to the latest specifications of Spring, you'll be able to build modern, Internet-scale Java applications in no time.We would start off with the guidelines to implement responsive microservices at scale. We will then deep dive into Spring Boot, Spring Cloud, Docker, Mesos, and Marathon. Next you will understand how Spring Boot is used to deploy autonomous services, server-less by removing the need to have a heavy-weight application server. Later you will learn how to go further by deploying your microservices to Docker and manage it with Mesos. By the end of the book, you'll will gain more clarity on how to implement microservices using Spring Framework and use them in Internet-scale deployments through real-world examples.