Continuous testing classloading issue

[kenfinnigan]

Describe the bug

Resuming tests when running mvn quarkus:dev leads to following error:

: groovy.lang.MissingMethodException: No signature of method: com.fasterxml.jackson.databind.MappingJsonFactory.createJsonGenerator() is applicable for argument types: (ByteArrayOutputStream, com.fasterxml.jackson.core.JsonEncoding) values: [, UTF8]
Possible solutions: createJsonGenerator(java.io.OutputStream), createJsonGenerator(java.io.Writer), createJsonGenerator(java.io.OutputStream, com.fasterxml.jackson.core.JsonEncoding)
The following classes appear as argument class and as parameter class, but are defined by different class loader:
com.fasterxml.jackson.core.JsonEncoding (defined by 'QuarkusClassLoader:Quarkus Base Runtime ClassLoader: TEST@5bf4e32' and 'QuarkusClassLoader:Augmentation Class Loader: DEV@7b4cb9bd')
If one of the method suggestions matches the method you wanted to call, 
then check your class loader setup.
	at io.restassured.internal.RequestSpecificationImpl.body(RequestSpecificationImpl.groovy:753)
	at quarkus.accounts.AccountResourceTest.testCreateAccount(AccountResourceTest.java:69)

Expected behavior

Tests complete without exception

Actual behavior

No response

How to Reproduce?

https://github.com/jclingan/manning-kube-native-microservices/tree/master/chapter2/account-service is the project.

Run mvn quarkus:dev, then press "r" to resume testing.

Output of uname -a or ver

Darwin MacBook-Pro 20.6.0 Darwin Kernel Version 20.6.0: Wed Jun 23 00:26:31 PDT 2021; root:xnu-7195.141.2~5/RELEASE_X86_64 x86_64

Output of java -version

openjdk version "11.0.11" 2021-04-20

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.1.3.Final and 2.2.1.Final

Build tool (ie. output of mvnw --version or gradlew --version)

Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d)

Additional information

No response

[quarkus-bot]

/cc @stuartwdouglas

[kenfinnigan]

@stuartwdouglas this sounds similar to some issues you've resolved in the past.

The problem with the test is triggered when trying to convert an object to JSON for a POST: https://github.com/jclingan/manning-kube-native-microservices/blob/master/chapter2/account-service/src/test/java/quarkus/accounts/AccountResourceTest.java#L69

[kenfinnigan]

/cc @jclingan

[stuartwdouglas]

@kenfinnigan is that a private repo?

[kenfinnigan]

Sorry @stuartwdouglas, forgot about that!

I've forked it and given you access to take a look: https://github.com/kenfinnigan/manning-kube-native-microservices

[stuartwdouglas]

Quick workaround for now is to add

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <scope>test</scope>
    </dependency>

I am not sure where databind is coming from atm, it is an optional restassured dep so it does not end up in the test class loader, but it is present in the augmentation class loader.

[kenfinnigan]

Awesome, thanks!

[stuartwdouglas]

Linked PR should resolve the issue.

[kenfinnigan]

Confirmed the workaround works great! Thanks