Advanced Spring: Effective Integration Testing with Spring Boot

Learn how to write several types of integration testing for both web and client applications, using Spring Boot.

Introduction

• Take advantage of Spring events
• What you need to know
• Why bother testing?

1. Explore the Power of Spring Boot Libraries

• Creating a Spring Boot application from start.spring.io
• Creating human-readable tests with Mockito and AssertJ

2. Integration Testing Against a Real Database

• Effective ways to test your data access
• Writing integration tests for a JPA repository
• Challenge: Write tests for a custom query
• Solution: Write tests for a custom query

3. Integration Testing Against Services with Caching Support

• Writing integration tests for the service layer
• Writing integration tests for cache
• Challenge: Write an integration test for exceptions
• Solution: Write an integration test for exceptions

4. Integration Testing Against a Web Controller

• Which type of web controller responsibilities to test?
• Writing integration tests for a web controller
• Testing custom exception returns

5. Integration Testing for the Client App

• Integration testing without making an external API call
• Writing integration tests for rest endpoints
• Introduction to Spring Cloud Contract
• Ensuring client app (rest call) and web app (controller) are in sync

Conclusion

• More Spring Boot integration testing resources