How can I reuse containers during integration tests with quarkus?

Question

I currently have a few integration tests that are running fine, however I'm using the annotation @QuarkusTestResource to launch containers via testcontainers before quarkus is launched and I adapt my properties to the random test container port by overriding the start method of my container class extending QuarkusTestResourceLifecycleManager.

To optimize a little bit I'd like for example to reuse my container that launches kafka since it takes 6-8 seconds to start it and reuse it for several of my integration tests. I've not been able to do so. Since Quarkus manages the lifecycle every times it stops, between every test class, it also stops every container. I tried mixing singleton containers from testcontainers with the Quarkus test resources but it doesn't work. Here's a snippet of the start of one of my integration test class :

@QuarkusTest @Tag(INTEGRATION_TEST) @QuarkusTestResource(value = KafkaNode.class, restrictToAnnotatedClass = true, parallel = true) class MyIntegrationTest { ... }

And my KafkaNode class :

public class KafkaNode implements QuarkusTestResourceLifecycleManager { static KafkaContainer kafka = new KafkaContainer(DockerImageName.parse("confluentinc/cp-kafka:6.2.1")) .withNetworkAliases("kafkaNode") .withNetwork(CommonNetwork.getInstance()); @Override public Map<String, String> start() { kafka.start(); return Collections.singletonMap("myapp.kafka.servers", kafka.getBootstrapServers()); } @Override public void stop() { kafka.close(); } }

I'm open to ideas to reuse of even rework my tests so that I can reuse containers in another way.

This won't work. When Quarkus determines that the application needs to be restarted (due to different test configuration), the containers are also stopped and restarted. Feel free to open an issue asking for this feature. — geoand
– geoand, Commented Mar 31, 2022 at 6:32

Alex Stockinger · Accepted Answer · 2022-04-01 15:30:41Z

You can use the experimental reusable mode for your container via .withReuse(true).

Please note that in order for this to work you need to:

set the testcontainers.reuse.enable=true property in the ~/.testcontainers.properties file
NOT call .close() (which programmatically stops the container in any way)

Once you've setup everything accordingly your container should

not be stopped/garbage collected at the end of the test run anymore
be picked up again at the next test run - avoiding a new container start

Please note that all runtime modifications (configuration, data, topics etc.) will still be there at the next test run. You need to take suitable measures to avoid non-deterministic tests - like using different / random topic names for each test run.

Also note that you'll need to manually stop/delete the container when you're done with it. Testcontainers will not remove the container for you anymore.

You can also read this article that describes how to do it from spring for inspiration: Reuse Containers With Testcontainers for Fast Integration Test

When using multiple QuarkusTestProfile's, the test context will be reset completely, so that even static variables are not preserved. I have not yet found a way to use e.g. a single database across all QuarkusTest's in one single test suite when using different QuarkusTestProfile's. Even if it seems that the container exists across test run boundaries, I can't reference it in later test runs to determine the mapped port, for example.

Philipp Li · Accepted Answer · 2022-06-03 20:10:49Z

When using multiple QuarkusTestProfile's, the test context will be reseted completely, so that even static variables are not preserved. I have not yet found a way to use e.g. a single database across all QuarkusTest's in one test when using different QuarkusTestProfiles. Even if it seems that the container exists across test run boundaries, I can't reference it in later test runs to determine the mapped port, etc.

Collectives™ on Stack Overflow

How can I reuse containers during integration tests with quarkus?

2 Answers 2

1 Comment

Comments

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Related