Book Image

Spring Boot and Angular

By : Devlin Basilan Duldulao, Seiji Ralph Villafranca
Book Image

Spring Boot and Angular

By: Devlin Basilan Duldulao, Seiji Ralph Villafranca

Overview of this book

Angular makes building applications with the web easy and Spring Boot helps get an application up and running using just a few lines of code and minimal configuration. This book provides insights into building full-stack apps using Angular and Spring Boot effectively to reduce overall development time and increase efficiency. You'll start by setting up your CI/CD pipeline and then build your web application’s backend guided by best practices. You'll then see how Spring Boot allows you to build applications faster and more efficiently by letting the Spring Framework and Spring Boot extension do the heavy lifting. The book demonstrates how to use Spring Data JPA and add its dependencies along with Postgres dependencies in the project to save or persist a user's data in a database for future use. As you advance, you'll see how to write tests and test a service using Mockito. Finally, you'll create a CI workflow or pipeline for a Spring Boot and Angular application to enable operations to deliver quality applications faster. By the end of this Spring Boot and Angular book, you'll be able to build a full-stack web application and deploy it through continuous integration and continuous deployment.
Table of Contents (24 chapters)
Part 1: Overview of Spring Boot and Angular Development
Part 2: Backend Development
Part 3: Frontend Development
Part 4: Deployment

Writing a test

In this section, we will now start writing our unit tests in our Spring Boot application. As we go back to our application, the services and repository are the essential parts of our application where we need to implement unit tests, as the services contain the business logic and can be modified often, especially when new features are added. The repository includes methods for CRUD and other operations.

We will be implementing two approaches in writing our unit tests. The first method is using an in-memory database such as H2 to store our created data when running unit tests. The second method is mocking our objects and repository using the Mockito framework.

Testing with the H2 database

The first approach that we will implement in writing our tests is using JUnit and AssertJ with the H2 database. The H2 database is an in-memory database that allows us to store data in the system memory. Once the application is closed, it will delete all the stored data. H2...