Spring-Boot tests log `MongoSocketReadException: Prematurely reached end of stream` after tests finished

[pas2al]

The tests are ok, but they stop with a log entry:

com.mongodb.MongoSocketReadException: Prematurely reached end of stream

I use Kotlin and the JUnit 5 support from testcontainers to set up the tests and @DynamicPropertySource from Spring Boot to configure the container. Is that a problem I should care about and if so, how do I avoid it? Is there a way to gracefully shut down the connection? I am not sure if this is really related to testcontainers.

[tranchiendang]

Did you have a look at Singleton containers

[krisgerhard]

Don't close mongo container manually.

[kiview]

As others have pointed out, make sure to not close the container, while it is still in use. JUnit5 support will start and stop containers. So instead, it can be better to start the container yourself (and let them run until the JVM exits). Else, you can also just ignore the log message.

[blekione]

I have the same problem even when as suggested I do not close container manually.

I believe this is a problem with Spring Boot trying to reach MongoDB (sending heartbeat?) after all tests are completed and MongoDB container being already closed. I can see in the logs this line

15:00:03.235 [main] TRACE org.testcontainers.utility.ResourceReaper - Stopping container: 7ef66fe109e5642f674eb8181e14a85e6329ee13065eafb24d1971bd164166dd

before the actual exception is thrown

[imrich-olha]

I have found a workable alternative solution there: https://stackoverflow.com/a/74274007

• remove the annotation @container
• start container automatically

        static MongoDBContainer mongoDBContainer = new MongoDBContainer("mongo:5.0.13");
    
        static {
            mongoDBContainer.start();
        }
    
        @DynamicPropertySource  
        static void setProperties(DynamicPropertyRegistry registry) {  
           ...
        }

[auvaibhavsingh]

thx @imrich-olha Working.

[cakirburak]

I have found a workable alternative solution there: https://stackoverflow.com/a/74274007

• remove the annotation @container
• start container automatically

        static MongoDBContainer mongoDBContainer = new MongoDBContainer("mongo:5.0.13");
    
        static {
            mongoDBContainer.start();
        }
    
        @DynamicPropertySource  
        static void setProperties(DynamicPropertyRegistry registry) {  
           ...
        }

Thanks a lot!

[leccyril]

i had the same issue the workaround is not working for me

private static final MongoDBAtlasLocalContainer mongoDBContainer = new MongoDBAtlasLocalContainer("mongodb/mongodb-atlas-local:latest");

	static {
		mongoDBContainer.start();
	}

@AfterAll
	static void tearDown() {
		mongoDBContainer.stop();
	}

com.mongodb.MongoSocketReadException: Prematurely reached end of stream i guess we need to stop after tests :)