Reset EmbeddedKafka After Every Test Method

Question

I am writing a test class that has multiple methods that require Kafka. Each one requires different broker properties, so I want a separate instance of EmbeddedKafka for each. Doing

@EmbeddedKafka(
    partitions = 20,
    topics = {"topic"},
    controlledShutdown = false,
    brokerProperties = {
      "listeners=PLAINTEXT://localhost:9091",
      "port=9091",
      "auto.create.topics.enable=false",
      "delete.topic.enable=true"
    })

Uses the broker properties for each method in the class. I don't want this. One way to overcome this would be to put each test method in a separate class with different broker properties. But I don't want to do this, as this would blow up the number of files I need.

Is there some way around this?

score 7 · Accepted Answer · edited Nov 25 '19 at 14:19

7

It's better to use different topics in each test. However, you can add @DirtiesContext to each test method or add @DirtiesContext(classMode = ClassMode.AFTER_EACH_TEST_METHOD) to the test class.

edited Nov 25 '19 at 14:19

fresskoma

25,481
10
85
128

answered Jun 06 '19 at 12:58

Gary Russell

166,535
14
146
179

3

This solution slows down tests considerably. Any alternative without recreating the context? – alex Jun 24 '21 at 08:32
I tried to delete the topics before each test but after a while I end up getting: Expected 3 but got 0 partitions java.lang.IllegalStateException: Expected 3 but got 0 partitions at org.springframework.kafka.test.utils.ContainerTestUtils.waitForSingleContainerAssignment(ContainerTestUtils.java:115) any ideas why? – la00 Jul 26 '22 at 07:46

Reset EmbeddedKafka After Every Test Method

1 Answers1