Testing Spring Boot Applications Masterclass

Learn everything you need to know about testing Spring Boot applications

7th early-bird batch started*

*the Masterclass is incrementally released (module after module) and you have the chance to sign up early for a massive discount


... left until the 40% discount expires 

Send me some examples first!

Knowing how to effectively test separates the serious engineer from a hobby developer

“Quality is not an act. It is a habit.” – Aristotle

Do you remember writing your first Spring Boot application? You were excited that you now finally expose data via an API and can connect to a database.

Testing your application was the last thing you could think of at this moment.

Once you start using Spring Boot in a professional environment there is no way around testing. Testing your application gives you confidence, fearless deployments on Friday afternoons and a good night of sleep.

Most tutorials and courses about testing barely go beyond the Hello World example of testing a calculator.

This does not prepare you for the real world where your application faces database access, external systems, messaging system, network, etc.

There are so many great libraries and techniques out there for the Java ecosystem when it comes to testing. Mastering them all, right after you understand the basics about Spring Boot, is hard.

Testing can be joy, if you are familiar with all the great tools you have access to: JUnit, Mockito, AssertJ, Hamcrest, JsonPath, JSONAssert, Testcontainers, Selenium, LocalStack, Awaitility, and not to forget the whole Spring Testing support.

Especially with Spring Boot you get so much functionality when it comes to testing. What you need are recipes to tackle testing different parts of your applications and then apply them.

This Testing Spring Boot applications Masterclass is all about making you an expert when it comes to testing Spring Boot applications in an efficient way.

All you need to know about testing
Spring Boot applications

The number of testing libraries is huge in the Java ecosystem. One might get overwhelmed with all the different solutions. 

This online Masterclass guides you through every testing library you need to verify your Spring Boot application is working as expected.

After working with this course, you not only have recipes at hand to test different parts of your application, but you are also familiar with industry best practice.

Want some first-hand insights to the Masterclass?

Subscribe to the newsletter and I'll send you four Masterclass preview lessons from different modules to your inbox

Enroll now and get a huge early bird discount ! 

Current early-bird price: $159 » $95.4

Here’s What You’ll Get When You Sign Up

Whether you just started with Spring Boot or are already using it in several projects, this Spring Boot Testing Masterclass guides you through all relevant parts of testing Spring Boot applications.

Understand what and how to test

You are unsure which parts of your application to test? There is a good chance that you are not focusing on the relevant parts of your application you should test.

Go beyond trivial unit testing

After working with this course you'll have recipes at hand to test all non-trivial parts of your application like database access, HTTP communication, using cloud services (e.g. SQS from AWS), etc.

Master different testing libraries

Not only will you be able to use all presented testing libraries for your application, but also understand what they are about and when to use which. Knowing when to use which library is a key skill.

Best practices for testing

This Masterclass includes an own section about industry best practices for testing applications. Make use of knowledge from years of writing tests for enterprise applications.

Here’s what people are saying about the course*

* currently placeholder

Marie Fisher

Developer at MyEnterprise

This course helped me to land a six-figures job at MyEnterprise! I always had a hate-relationship when it comes to testing. Now I am loving it! Can't be happier, thank you Philip!

Carl Numan

Engineering Manager at QualitySoft Inc.

I always recommend this course to my team members. When it comes to on-boarding junior developers about testing, this course is helping us a lot. 

Keep up the good work Philip!

Gary Howard

Recruiter at WhiteboardRecruitment Inc.

Recruiters hate this course. There is literally nothing we can bug our interview candidates about testing applications with Spring Boot. Fortunately they still all fail to reverse a linked list using Fortran.

Seems like Philip is doing an great job!

Course curriculum

Overview of the different Masterclass modules


Module 1: Introduction 

We'll start with an application walk-through, to get you familiar with the code base we test throughout the Masterclass.

At the end of this module you'll be able to start the Book Reviewr application and its infrastructure components on your machine. (already available)


Module 2: Testing with the Spring Boot Starter Test

Getting familiar with the swiss-army knife that every Spring Boot project includes: Spring Boot Starter Test.

We'll cover all testing libraries that come with this starter and take a detailed look into ttesting with JUnit 5 and mocking with Mockito. (already available)


Module 3: Testing database access

Start writing efficient tests for your database layer while utilizing Spring Boot test features like @DataJpaTest, TestEntityManager, @Sql, etc.

Furthermore, with this module you'll start using Testcontainers to replace the default in-memory database, learn how you can pre-populate your database, and understand the pitfalls when writing tests where the EntityManger is involved.(already available)


Module 4: Testing the web layer

MockMvc to the rescue!

Learn how to effectively test your web-layer (@RestController and @Controller) in isolation. You have your endpoints secured with Spring Security? No problem! There is great support available to ensure only authenticated users with the correct privileges reach your endpoints. (already available)


Module 5: Testing further slices of our application

Ever wanted to know how to test your WebClient or RestTemplate HTTP calls? How to ensure your business logic is working as expected and how to verify your messaging controllers?

In this module, we'll tackle further slices to effectively test different parts of our application in isolation. In addition, we'll write our own test slice. (already available)


Module 6: Writing tests with the whole Spring Context

It's time to write integration tests using @SpringBootTest!

With the knowledge of previous modules, we can mock almost any external infrastructure component, expect Keycloak. We'll introduce WireMock to mock the HTTP interaction with the identity provider or any other system during application startup (e.g. Salesforce, Stripe, SAP, etc.). (already available)


Module 7: Writing web tests

Writing end-to-end tests to ensure our users can interact with our application.

We'll make the most of Selenium and Selenide by verifying your application with automated tests for different browsers. (planned release end of September)


Module 8: Best practices for integration testing

Maven/Gradle configuration, naming techniques, CI/CD considerations, etc. (planned release beginning of October)

Talk is cheap, show me some real lessons!

About The Course Teacher, Philip

Philip is a Senior Java Software Engineer and working in Berlin for Germany's leading online real estate marketplace. He started with Spring Boot back in 2015 and has used it for multiple applications in several industries. Testing is an integral part of his daily work as he is a profound craftsman.

Once Philip understood the Java testing  landscape, writing tests makes as much fun as writing production code for him. He is also a won around TDD (Test Driven Development) practitioner and constantly shares testing techniques among his colleagues.

He started teaching Java topics on YouTube in 2018 and is writing content about the Java ecosystem on his blog for now more than three years.

Besides that, he's also actively helping developers on StackOverflow with their questions around testing .

Philip Riecks (rieckpil)

Here’s what people are saying about the course instructor

Tom Hombergs reflectoring.io

Tom Hombergs

Founder of reflectoring.io

Philip is a dedicated developer and doesn't give up until he has understood the details of a topic.

In his courses and articles, he transfers this knowledge to you and they leave you smarter than before. 

Looking forward to working with you in the future, Philip

Vlad Mihalcea

Vlad Mihalcea

Founder of vladmihalcea.com

Philip is a very skilled content creator who managed to publish high quality articles and videos that cover a wide range of topics, like Spring, Java EE, or Jakarta EE.

He pays a lot of attention to details, so if you enjoyed his articles and videos, you are surely going to love his video courses.

Marco Behler

Marco Behler

Founder of marcobehler.com

How can you not love what Philip is doing?

Tons of actionable tutorials and content across the Jakarta EE and Spring universes.

Highly recommended!

Why you should invest in learning how to test Spring Boot applications

When was your last outage or downtime caused by a bug that could have been prevented with a test? How much did your company lost in direct revenue or indirectly by losing customer satisfaction?

Putting in numbers is hard but I guess every minute a non trivial application is not working as expected results in costs or lost revenue of $ 1.000 - 10.000+

On the other side, consider how uncertainty paralyses you when you want to refactor an existing code base that lacks tests. Or you are new to a project and want to introduce a new feature. Testing things afterwards manually is a cumbersome and repetitive tasks. 

We as engineers are lucky to have tools around us that can automate such cumbersome and repetitive tasks. So let's start using them by learning how to effectively test our applications.

Once you know your testing toolkit, writing tests becomes joyful.

Masterclass course

Get full access to the whole course content


159 95.4

Single-User License

  • Lifetime access
  • Immediate start as an early-bird
  • Single-User License
  • Access to the source code
  • Free updates on new lessons
  • Q/A Session with the instructor and access to private Slack workspace
  • JUnit 5, Spring Boot 2.3, Java 14
  • Real-world application using ReactJS with TypeScript
  • English course content

Early-bird batch #7


... left to register to the course for a discounted price as an early-bird user with the coupon code


and get a 40% discount

80% discount 8th of August - 16th of August

70% discount 17th of August - 23th of August

65% discount 24th of August - 30th of August

60% discount 31st of August - 13th of September

55% discount 14th of September - 20th of September

50% discount 21th of September - 27th of September

40% discount currenlty

Discounted price for the Masterclass goes up with the next module


100% Satisfaction Guarantee for 30-Days

You are not satisfied with the content of the Masterclass? No problem!

Contact me (via Mail, Slack, Twitter, etc.) within 30 days after you got access to the Masterclass and I'll send you a refund. 

Please note that you can't re-join afterwards for the same early-bird price .

Don’t wait! Look at what other early-bird students say about this course

Vlad Flore

Vlad Flore

Software Engineer - Homepage

Testimonial on Twitter

Bought it a couple of days ago and had a look at it -> it's awesome! Really like the tech stack and the project looks altogether very professional! Lots of good stuff in there!

Joined with the Early-Bird Batch #1

Wim Deblauwe Course Student

Wim Deblauwe

Software Engineer - Homepage

Testimonial via Mail

Philip has made a fantastic overview of the full testing landscape of Spring. The videos are clear and explain details and common pitfalls in great depth. Looking forward to the rest of the course.

PS: Wim is also book author of the Practical Guide to Building an API Back End with Spring Boot

Joined with the Early-Bird Batch #2

Vladi Course Student


Software Engineer - GitHub

Testimonial on Twitter

Check it out!!! @rieckpil is making great materials once again

Joined with the Early-Bird Batch #1

Frequently Asked Questions

How long does it take to complete the course?

The planned course length is 5 - 7 hours. You don't have to watch all sections in a row and can come back any time. 

As I recommend to code in parallel, I assume it takes you about 10 hours in total to work through this masterclass and get the most of it.

Can I get a refund?

Yes, I offer a 30-days back money gurantee

Is this course for me?

You are a Java developer, work with the Spring framework and want to write tests with joy?

Then it definitely is!

I won't explain what Spring and Spring Boot is all about as there are quite good resources for this available. I assume you have basic knowledge with Spring Boot and Java.

What library versions are in use?

I'm constantly updating all library version and try to be up-to-date.

Right now they are:

  • Spring Boot 2.3.0
  • Testcontainers 1.13.4
  • WireMock 2.27.1
  • Selenium 3.141.59
  • JUnit 5.6.2
  • Mockito 3.3.3
  • Awaitility

When do you expect all modules to be availabe?

With my current plan I'm expecting all modules of the Testing Spring Boot Applications Masterclass to be available at the end of September.

You can already sign up for the Masterclass and get a massive discount. Each upcoming module (~ one is uploaed module per week) is free-of-charge.

Can I watch a demo lesson?

Yes, subscribe to the newsletter and I'll send you four lessons from four different modules.

Can I get a discount as a student?

Yes, just send me a confirmation about you being a student and I'll send you a special coupon code.

Where can I register?

If you already have an account for my online courses then you can reuse this account. Otherwise create your course account here (no payment info required, just email).

Where can I reset my password?

If you forgot your password or want to reset it, you can reqeuest a new password here.

Where can I login?

You can either login with your course account inside the course sections or here.

How many videos are already available?

As of the 20th of September the first six modules are available with 95 videos and a duration of 6h in total.

Where can I get a multi-user license?

If you are part of a team and want to use this course together with your co-workers, reach out to me ([email protected]) and I'll offer you a reduced price per active user.

What does early-bird mean?

While the application we'll use throughout the Masterclass is already developed and I have the learning parts ready, not everything is recorded and uploaded yet.

That's why I offer an early-bird access where you join during the course creation and benefit for a cheaper price will waiting for the upcoming modules to be released.

You can find the currently available modules at the agenda of the Masterclass and can expect ~ one module to be released each week.

Do you offer an affiliate program?


If you are convinced about the Masterclass and want to earn money, you can join as an affiliate.

I'm offering 30% commission for each sale that was made with your link (2 week cookie period).

Not convinced yet?

Let me send you four Masterclass lessons that are part of different Modules. This way you can see for yourself first-hand the quality of the lessons.

The mission behind this Masterclass

I believe this Masterclass can have an impact in the overall quality of the applications we write and use. Everybody is benefiting from less bugs and less outages as software is indispensable from our daily life .

As I'm also part of interviewing new candidates, I can see that basic testing techniques is something that almost every Junior Developer I interviewed is missing. Having such skills also uplifts your chances of getting a job. 

Not only does it make you a better engineer, but also once you apply the techniques presented in this Masterclass, your coworkers' skills will grow too. Let's spread the news that testing can be fun and is an essential tool of every serious engineer.

Have fun working with this Masterclass,

Your instructor,