Stop Firefighting and Start Deploying with Confidence 🍃
Become a More Productive Spring Boot Developer 🧪
Hi Mailwal,
For the past 11 days, I've been showing you the testing problems I see in Spring Boot teams and how to solve them.
Today, I want to tell you about Testing Spring Boot Applications Masterclass - the course I built to teach this systematically.
For the past 11 days, I've been showing you the testing problems I see in Spring Boot teams and how to solve them.
Today, I want to tell you about Testing Spring Boot Applications Masterclass - the course I built to teach this systematically.
Why I created the Masterclass 🧪
For years, I kept seeing the same pattern:
Developers know they should test. They've read about JUnit and Mockito. But when it comes to actually testing a Spring Boot application - with database access, HTTP clients, messaging queues, OAuth2 security - they're stuck.
Most tutorials teach you how to test a calculator. That doesn't prepare you for the real world.
The answers exist - scattered across blog posts, Stack Overflow, and documentation. But nobody had created a complete path from "I don't know how to test Spring Boot" to "I deploy with complete confidence."
So I built it.
Developers know they should test. They've read about JUnit and Mockito. But when it comes to actually testing a Spring Boot application - with database access, HTTP clients, messaging queues, OAuth2 security - they're stuck.
Most tutorials teach you how to test a calculator. That doesn't prepare you for the real world.
The answers exist - scattered across blog posts, Stack Overflow, and documentation. But nobody had created a complete path from "I don't know how to test Spring Boot" to "I deploy with complete confidence."
So I built it.
What is the Testing Spring Boot Applications Masterclass?
Testing Spring Boot Applications Masterclass is a 12+ hour on-demand video course with 130+ lessons that teaches you battle-tested recipes for testing real-world Spring Boot applications.
It's not about toy examples. It's about the patterns that work in production.
It's not about toy examples. It's about the patterns that work in production.
The Book Reviewr application 🍃
Everything we test in the course is based on a real-world application I built specifically for this: Book Reviewr.
It's a self-contained system where users can:
It's a self-contained system where users can:
- Enter reviews for books
- Get review statistics
- Manage their reviews
The application includes everything you'll face in production:
- PostgreSQL database
- Amazon SQS messaging
- External HTTP APIs
- OAuth2 authentication with Keycloak
- Spring Security
All the testing recipes apply to any database, messaging system, or architecture. This is just the vehicle for teaching.
What you'll learn (8 modules) 📋
Module 1: Introduction & Application Walkthrough
Get familiar with the Book Reviewr application. Set it up locally. Understand the AWS and OAuth2 setup.
Module 2: Testing With Spring Boot Starter Test
Master the swiss-army knife every Spring Boot project includes. Deep dive into JUnit 5 (parallelization, custom extensions) and Mockito for mocking.
Module 3: Testing Database Access
Write efficient tests for your database layer using @DataJpaTest, TestEntityManager, and @Sql. Learn the pitfalls when the EntityManager is involved. Replace in-memory databases with Testcontainers.
Module 4: Testing the Web Layer
Test your REST controllers in isolation with @WebMvcTest and MockMvc. Test secured endpoints with ease. Verify authentication and authorization rules.
Module 5: Testing Further Slices
Test HTTP clients (WebClient and RestTemplate), business logic in isolation, and messaging consumers. Write custom test slices for your specific needs.
Module 6: Writing Tests With the Whole Spring Context
Integration tests with @SpringBootTest. Mock external systems that are required during startup (OAuth2 providers, external APIs) using WireMock. Structure your integration test strategy.
Module 7: Writing Web Tests
End-to-end tests with Selenide and Testcontainers. No manual WebDriver setup. Record videos of your tests. Make screenshots on failure. Start your entire Docker Compose environment for testing.
Module 8: Testing Best Practices
The module where everything comes together. Making the most of Spring's context caching to drastically reduce build times (this is where the 25min → 12min case study lives). Test naming conventions. Working with time. Mocking static methods. Visualizing test results in CI.
Get familiar with the Book Reviewr application. Set it up locally. Understand the AWS and OAuth2 setup.
Module 2: Testing With Spring Boot Starter Test
Master the swiss-army knife every Spring Boot project includes. Deep dive into JUnit 5 (parallelization, custom extensions) and Mockito for mocking.
Module 3: Testing Database Access
Write efficient tests for your database layer using @DataJpaTest, TestEntityManager, and @Sql. Learn the pitfalls when the EntityManager is involved. Replace in-memory databases with Testcontainers.
Module 4: Testing the Web Layer
Test your REST controllers in isolation with @WebMvcTest and MockMvc. Test secured endpoints with ease. Verify authentication and authorization rules.
Module 5: Testing Further Slices
Test HTTP clients (WebClient and RestTemplate), business logic in isolation, and messaging consumers. Write custom test slices for your specific needs.
Module 6: Writing Tests With the Whole Spring Context
Integration tests with @SpringBootTest. Mock external systems that are required during startup (OAuth2 providers, external APIs) using WireMock. Structure your integration test strategy.
Module 7: Writing Web Tests
End-to-end tests with Selenide and Testcontainers. No manual WebDriver setup. Record videos of your tests. Make screenshots on failure. Start your entire Docker Compose environment for testing.
Module 8: Testing Best Practices
The module where everything comes together. Making the most of Spring's context caching to drastically reduce build times (this is where the 25min → 12min case study lives). Test naming conventions. Working with time. Mocking static methods. Visualizing test results in CI.
What you get 🎁
- 130+ video lessons with over 10 hours of content
- Short, focused lessons (5-15 minutes each) that you can watch at your own pace
- Real-world code examples: The complete Book Reviewr application source code on GitHub
- Battle-tested recipes: Copy-paste patterns for every common testing scenario
- Industry best practices: Years of experience distilled into actionable advice
- Certificate of completion: Share on LinkedIn or add to your CV
- Lifetime access: One-time payment, keep access forever, including all future updates
- Up-to-date with a recent Spring Boot version and Java 21: All content works with the latest versions
Who this is for ⚡️
The Masterclass is for you if:
- You're building Spring Boot applications professionally
- You know basic Java and Spring Boot but struggle with testing
- Your test suite is slow, flaky, or doesn't catch bugs
- You're stuck in firefighting mode, jumping from one bugfix to another
- You treat testing as an afterthought and want to change that
- You want proven recipes instead of piecing together blog posts
The Masterclass is NOT for you if:
- You're brand new to Java (prerequisite: basic Java and Spring Boot knowledge)
- You don't use Spring Boot
- You're looking for a course on developing microservices (this is testing-focused)
- You're already an expert and consulting other companies on test strategy
- What are you waiting for?
What happens next
Tomorrow, I'll break down the pricing for you.
There are three editions to choose from, and right now there's a 30% discount running.
I'll help you figure out which edition makes sense for your situation.
» Start exploring the Testing Spring Boot Applications Masterclass
PS: Want to see actual lessons before deciding? Request access to four preview lessons at the landing page. No payment required.
Joyful testing,
Philip
There are three editions to choose from, and right now there's a 30% discount running.
I'll help you figure out which edition makes sense for your situation.
» Start exploring the Testing Spring Boot Applications Masterclass
PS: Want to see actual lessons before deciding? Request access to four preview lessons at the landing page. No payment required.
Joyful testing,
Philip
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