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Building Web Apps with Spring 5 and Angular

Building Web Apps with Spring 5 and Angular

By : Ajitesh Kumar Shukla
2.1 (8)
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Building Web Apps with Spring 5 and Angular

Building Web Apps with Spring 5 and Angular

2.1 (8)
By: Ajitesh Kumar Shukla

Overview of this book

Spring is the most popular application development framework being adopted by millions of developers around the world to create high performing, easily testable, reusable code. Its lightweight nature and extensibility helps you write robust and highly-scalable server-side web applications. Coupled with the power and efficiency of Angular, creating web applications has never been easier. If you want build end-to-end modern web application using Spring and Angular, then this book is for you. The book directly heads to show you how to create the backend with Spring, showing you how to configure the Spring MVC and handle Web requests. It will take you through the key aspects such as building REST API endpoints, using Hibernate, working with Junit 5 etc. Once you have secured and tested the backend, we will go ahead and start working on the front end with Angular. You will learn about fundamentals of Angular and Typescript and create an SPA using components, routing etc. Finally, you will see how to integrate both the applications with REST protocol and deploy the application using tools such as Jenkins and Docker.
Table of Contents (12 chapters)
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Unit testing the services


In this section, you will learn how to write unit tests for services. Services are meant to be reused in one or more components. There can be different kinds of services, such as those providing utility APIs, reusable business rules/logic, and data processing tasks (also termed data services) such as retrieving data from the server. Components inject these services via the constructor, and later, use one or more APIs of the injected services to perform different tasks such as sending/retrieving data to/from the server. Externalizing the data handling logic in the services helps the components stay lean and easy to unit test, as the services can be mocked.

In this section, we will learn some of the following aspects of unit tests for data services that invoke one or more server APIs for data processing:

  • Test double for HTTP
  • MockBackend
  • BaseRequestOptions

Service under test - DoctorService

For illustration purposes, we will consider DoctorService, which has these two APIs...

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Building Web Apps with Spring 5 and Angular
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