Testing Java: JUnit 5, Mockito, Testcontainers, REST Assured (Udemy.com)

I found this course on Testing Java: JUnit 5, Mockito, Testcontainers, REST Assured to be very well-structured and easy to follow. The concepts are explained clearly, making it simple to understand even the more advanced topics. What I especially liked is the engaging teaching style—the instructor keeps the sessions interesting and practical, which really helps in retaining the concepts. The hands-on approach and real-world examples made it easier for me to connect theory with actual implementation. Overall, it’s a great course for anyone looking to strengthen their Java testing skills. I would definitely recommend it to both beginners and those looking to refresh or deepen their knowledge.

Very good course that describes in detail how you can write unit tests. I was able to successfully use the testing methods described in the course to write unit and integration tests for other Spring Boot projects I already have in my collection.

I really enjoyed this course. The structure is clear and well thought out, and the topics are very well chosen — it genuinely felt like all the important concepts around testing in Java were covered. From testing HTTP endpoints with REST Assured and databases using Testcontainers, all the way down to testing individual methods in isolation with JUnit and Mockito, everything was included. I also liked the didactic approach: first the theory is explained, and then it’s immediately applied in practice. I especially appreciated that there was concrete code provided to write tests against, which made the learning very practical and hands-on instead of abstract. Another big plus is that the instructor is responsive and helpful — I asked a question and got a reply, which always makes a huge difference in an online course. Overall, a very solid and well-designed course that I’d definitely recommend.

Best JUnit course I have ever taken. The lecturer explains each concept in a clear and straightforward manner. The hands-on projects are thoughtfully designed and well-connected, improving practical learning. I highly recommend this course without any hesitation.

This course is a must-have for any Java developer looking to get started with unit and integration testing. Sergey does a fantastic job of breaking down complex topics into easy-to-understand lessons. He starts with the absolute basics of JUnit 5, explaining the "why" behind testing, before moving on to essential tools like Mockito. The sections on Spring Boot integration are particularly valuable, showing exactly how to test controllers and data layers in a real-world application. The pacing is perfect, and the hands-on coding makes it very easy to follow along. I now feel confident in my ability to write meaningful tests for my projects. Highly recommended!

Solid course on testing in Java/SpringBoot environment. Pros: - It gives you everything you need to start off: JUnit, Mockito, Testcontainers, plus the specific Spring tools. It doesn't go very deep, as this is an introductory course, but it does cover them in enough depth to get you up and running, and you'll understand what you're doing. - It has a perfect pace and doesn't spoonfeed you. If you hate it when a course explains obvious stuff, it's too slow or repeats everything ad nauseam, this course is for you. On the other hand, you'll need to work on the material and can't be too passive, so this point could actually be a downside for some people. Cons: - The Mockito section is way too short. - It could do with more slides and other visual aids as it relies too much on verbal explanations. Sergey's English is pretty good, but his monotone delivery isn't the most engaging, to be honest.

Sergey is the only teacher till now I found engaging. His teaching style is mostly hands on and hence I didn't get any monotonous feeling. I am looking forward to his other courses like microservice and AWS deployment etc.

Very complete and instructive course. Theory is provided first (on TDD for example) and then explainde with examples and excersises for student. There are also quizes so you can check your learning progress after some lessons.

This course is really amazing for someone who wants to learn test driven development as well as how to write web layer testing along with Integration testing. I would request author to also update some course material as and when spring updates its APIs and also cover test methods for all HTTP Methods.

I really liked this course. You will understand the whole concept of testing and practical usage. It is detailed enough to start applying that right away, but not too detailed to get lost. It is real-life oriented, not just listing of all Junit / Mockito functions.