ausmanki / springboot-testcontainers-demo

Spring Boot Test Containers Demo

springboot-testcontainers-demo

Tools and technologies used

1. Java 11+
2. Spring Boot
3. Spring Data JPA
4. MySQL
5. Lombok
6. JUnit 5 Framework
7. IntelliJ IDEA
8. Testcontainers
9. Docker
10. Maven

What is Integration Testing

As the name suggests, integration tests focus on integrating different layers of the application. That also means no mocking is involved.

Basically, we write integration tests for testing a feature that may involve interaction with multiple components.

Examples: Integration testing of complete Employee Management Feature ( EmployeeRepository, EmployeeService, EmployeeController).

Integration testing of complete User Management Feature (UserController, UserService, and UserRepository).

Integration testing of complete Login Feature (LoginRespository, LoginController, Login Service), etc

What is Testcontainers?

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

Using Testcontainers is fairly easy and it gives us the opportunity to create integration tests without the need for pre-installed components.

Using Testcontainers, we would always start with a clean database and our integration tests could run on any machine.

Testcontainer allows us to use Docker containers within our tests. As a result, we can write self-contained integration tests that depend on external resources.

Things todo list:

1. Clone this repository: git clone https://github.com/hendisantika/springboot-testcontainers-demo.git
2. Navigate to the folder: cd springboot-testcontainers-demo
3. Run the integration test: mvn clean test