Book Image

Mastering Spring Cloud

By : Piotr Mińkowski
Book Image

Mastering Spring Cloud

By: Piotr Mińkowski

Overview of this book

Developing, deploying, and operating cloud applications should be as easy as local applications. This should be the governing principle behind any cloud platform, library, or tool. Spring Cloud–an open-source library–makes it easy to develop JVM applications for the cloud. In this book, you will be introduced to Spring Cloud and will master its features from the application developer's point of view. This book begins by introducing you to microservices for Spring and the available feature set in Spring Cloud. You will learn to configure the Spring Cloud server and run the Eureka server to enable service registration and discovery. Then you will learn about techniques related to load balancing and circuit breaking and utilize all features of the Feign client. The book now delves into advanced topics where you will learn to implement distributed tracing solutions for Spring Cloud and build message-driven microservice architectures. Before running an application on Docker container s, you will master testing and securing techniques with Spring Cloud.
Table of Contents (22 chapters)
Title Page
Copyright and Credits
Packt Upsell

Testing strategies

There are five different microservices testing strategies. The first three of them are the same as for monolithic applications:

  • Unit tests: With unit tests, we test the smallest pieces of code, for example, a single method or component, and mock every call of other methods and components. There are many popular frameworks that support unit tests in Java, such as JUnit, TestNG, and Mockito (for mocking). The main task of this type of testing is to confirm that the implementation meets requirements. Unit testing can be a powerful tool, especially when combined with test-driven development.
  • Integration tests: Using only unit testing doesn't guarantee that you will verify the behavior of the whole system. Integration tests take the modules and try to test them together. This approach gives you an opportunity to exercise communication paths within the subsystem. We are testing the interaction and communication between components based on their interfaces with external services...