The best explanation on spring boot and integration tests with testcontainer. Your videos are so precious. Thank you so much

Dan, you are really an asset for whoever wants to learn spring in very easy way.

🎉I like the style you show the stuff 🎉

Great tutorial. Thanks for that.

Thank you, a great and practical tutorial

Great video thanks 👍

Loved the video. Thank you!

so easy, unbelievable

great tutorial thanks

Awesome dude

Learned so much!

@DanVega

8 ай бұрын

Thank you for watching 🤩

Great stuff.

@DanVega

8 ай бұрын

Thanks!

Yes you are right, often due to time constraints we often skip writing test cases😅

@DanVega

8 ай бұрын

Right!

@IvanRandomDude

8 ай бұрын

Yeah. So called TDD - Testless Driven Development

Great tutorial as already stated by most commenters. One thing though: Around 31 minutes in, your test fails because you now have 31 objects in your test data. You update the test to make the test pass. Might the reason the test fails in the first place be that the @Transactional and @Rollback does not work when inserting to the database via the RestTemplate? The Spring docs state that: "The Spring Framework does not support propagation of transaction contexts across remote calls, as high-end application servers do." Since this is a call onto the endpoint, not on the repository, this may be the cause of the error. Im all new to both Spring, Spring boot and Spring data jdbc and transactions, so I might very well be wrong.

@sohaibelbokhari8319

9 күн бұрын

That's exactly what I noticed; the rollback is not considered when we perform HTTP calls during test execution

hey @dan!, great resources! I love the way you express the process :D Im also trying to follow best practices, and noted that you skip adding the public modifiers on method? are you following some specific convention that I can check out? or is just for tutorial simplicity and speed? thanks again for your time and effort!

Hey Dan, love the videos. Can we consider this still in the scope of Unit Tests? I have the impression this is actually a semi-Integration test

This video are awsome, better then Testcontainers doc, I'll immediatly start to follow you 😅

Hi Dan, thank you a lot for this video. Do you have any examples using Kafka with test containers?

Nice video and great explanation! I have one question: If I have so many test classes that share read/write resources, best approach is to decouple dependencies between them first? What about parallelism with multiple container instances? Thank you so much!

Great video again, Dan. Could you please add the link to the blog post you mentioned at the end of the video. Thank you so much.

Dan where can someone get a spring t-shirt? 😢 I have looked everywhere…

Just discovered your channel these past days, big gold mine! Keep it up and thanks for the help! I was wondering how you easily use the HTTP instead of curl command and the JSON being formatted.. I tried various packages but it did not work for me.

@m3hdim3hdi

2 ай бұрын

HTTPie

Thank you Dan for this useful video. It seems @Transactional and @Rollback don't work with servlet environment (client and server run in separate threads -> in separate transactions). I have used annotations @Order and @TestMethodOrder to set the order of tests' execution.

Dan, can you cover integration test cases using H2 database

Hello Dan. I do not understand why i got this message when i launch test into Intellij IDEA : " java: invalid source release 19 with --enable-preview (preview language features are only supported for release 21) " All is fine, in terminal with mvn command "mvn clean test" but not in the IDE. why ?

I assume you are not going to write sql schemas all the time? It's a great video, but my gripe with such tutorials is that they most of the time don't show the complexity of real world scenarios. Two big aspects lacking here in my opinion: 1- handling migrations to the testcontainer in a more realistic way than writing schemas manually. 2- handling authentication. It's a great video nonetheless and much appreciated, but I hope you can talk more about that and show use cases that are more "real-world".

You are always best sir!!

@DanVega

8 ай бұрын

Thank you so much 😀

@Dan Vega is it possible to test security context when making these tests? Thanks

Thanks for the great videos, as always. One small thing: I guess your update test is not doing anything since you never called update endpoint. 😀

The spring-boot-starter-data-jdbc was missing in my project.

Hey this is good, i just want to ask, what if i want to test the database with the @DataJpaTest without the whole App context, could I use this ? Also if I want a fixed port, Cant I just pull the url & passwords from the .properties files ?

Very great explanation till the last minute 👏🏼 About the last bit though: When we're not specifying orders for our Unit Tests, it might run them in any order, right? So when we're writing tests, they should pass independently and constantly (regardless of the order). Now, when we're inserting a new post, then the vount would be 101. If it runs the count test first, it would be 100. So, either a test on the count is not a good idea, or we should remove the recently added post right after testing insertion in the same test method.

@mehnaazmohiuddin

7 ай бұрын

Yes, they run in any order

Thanks for sharing! Very useful. Is there a way to speed up the compile time ? I'm using Mysql image for test containers. I takes about a minute to compile before tests are running.

@DanVega

6 ай бұрын

It should not take that long. I have used MySQL / PostgreSQL and it takes seconds. It might help to turn on more logging and see if you notice anything strange going on.

Loved the content and appreciate the effort, I often struggle with writing better logs which actually meaningful when time comes, what your say on it. TIA Anand

In my case i could not get the Rollback annotation to roll back so as to remove the added post in the successful test case, which caused a failed count on the find all test case of 101 instead of 100.

in public void setup we are using the system undertest . is this ok ?

What is the best way to configure test container in multi-module gradle project?

What are the tradeoffs of using it rather than the docker-compose file with the new docker-compose support of spring boot? Doesn’t it seems you now have two places where you configure your infrastructure? 🤔 One in the docker compose yml file and another with the testcontainer Java code. 😢 Great videos by the way! 😊

@DanVega

8 ай бұрын

The docker compose is used for development. When you run a test you don't have access to that.

I don't think the transactional is working as we think in the video: According to the Spring Boot 3.2 Docs: If your test is @Transactional, it rolls back the transaction at the end of each test method by default. However, as using this arrangement with either RANDOM_PORT or DEFINED_PORT implicitly provides a real servlet environment, the HTTP client and server run in separate threads and, thus, in separate transactions. Any transaction initiated on the server does not roll back in this case. Why are the Spring Boot docs better than the Spring Framework? I have been muddling through this issue.

How to create tables for database while using JDBC?

i think that @Transactional rollback could not be done when we performe http call in integration tests

I have a doubt. Without configuring the datasouce (url, username, password) how it is working and storing the data in db?

@sefumies

21 күн бұрын

Its not you are correct, in fact Im suprised its working here as no jdbc connection has been setup in the repo application.properties file

didnt work for me the image does not get pulled edit: i was using @Test from junit 4 instead of 5

It's not easy at all. We have used testcontainers for blackbox testing. It depends on the microservice, but it took 1-3 min to build up the entire test environment. Their experimental feature allows us to reuse docker networks. So I could reduce the time to build up containers to 20-30 seconds. The second problem is to automate these tests, automic jar is not a solution for this problem. It's just a way of solving a problmen when you have no solution. In conclusion, it's not easy to write integrationtests with testcontainer. It will have consequences for the projects. There are reasons to use this framework for sure but there are also weak points and if you are not solve these weak points, then this framework will turn against you

Hey Dan, I followed along with you, but I'm getting this error: Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.NoClassDefFoundError: org/springframework/data/jdbc/repository/config/AbstractJdbcConfiguration [in thread "main"] Maybe it won't work since I'm using JPA instead of JDBC?