Quarkus, Jackson and Kotlin 1.4

Describe the bug

• Upgraded to Kotlin 1.4
• Use Jackson and Jackson-module-kotlin
• Running with @QuarkusTest fails
• Same test without @QuarkusTest is ok

Se repository: https://github.com/kny78/quarkus-kotlin14-jackson-fail See failure output: https://github.com/kny78/quarkus-kotlin14-jackson-fail/tree/master/failure-logs

Expected behavior Both tests should run ok:

• im.kny.DeSerializeQuarkusTest (Fails)
• im.kny.DeSerializeNonQuarkusTest (Ok)

Actual behavior The test im.kny.DeSerializeQuarkusTest fail.s

To Reproduce Steps to reproduce the behavior:

1. git clone [e-mail]:kny78/quarkus-kotlin14-jackson-fail.git
2. mvnw install

**Environment (please complete the following information):**
 - Output of `uname -a` or `ver`:

        Linux kjetil 5.7.15-200.fc32.x86_64 #1 SMP Tue Aug 11 16:36:14 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

 - Output of `java -version`: 

        openjdk version "11.0.8" 2020-07-14
        OpenJDK Runtime Environment 18.9 (build 11.0.8+10)
        OpenJDK 64-Bit Server VM 18.9 (build 11.0.8+10, mixed mode, sharing)

 - GraalVM version (if different from Java): N/A
 - Quarkus version or git rev: 1.7.0
 - Build tool (ie. output of `mvnw --version` or `gradlew --version`): 

        Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
        Maven home: /home/kny/.m2/wrapper/dists/apache-maven-3.6.3-bin/1iopthnavndlasol9gbrbg6bf2/apache-maven-3.6.3
        Java version: 11.0.8, vendor: Red Hat, Inc., runtime: /usr/lib/jvm/java-11-openjdk-11.0.8.10-2.fc32.x86_64
        Default locale: en_GB, platform encoding: UTF-8
        OS name: "linux", version: "5.7.15-200.fc32.x86_64", arch: "amd64", family: "unix"


**Additional context**
(Add any other context about the problem here.)

[pschyma]

I tried to debug this for a short time, but my breakpoints were never hit in the tests.

Maybe I’ll find some time on the weekend to understand kotlin internals here.

Meanwhile I made another observation: when I remove the “reflect” dependency and Gradle pulls the 1.3.72 version from jackson-module-kotlin, my tests work again on Quarkus 1.8.0.Final. On Quarkus 1.7.3.Final hibernate-types fails to deserialize a JSON field because it gets confused by the class hierarchy of that field (serialized as @JsonTypeInfo(use = Id.MINIMAL_CLASS, include = As.WRAPPER_OBJECT)).

I’m not sure who to blame now: Quarkus, Kotlin, Jackson, … so I’ll go back to kotlin 1.3.72 and wait for the jackson module update.

[pwongv]

Sure thing. I’ve spliced the Pact tutorial example into the Quarkus quickstart :

0001-Splicing-in-Pact-test-example-to-demonstrate-11549.patch.TXT

If you set a breakpoint in au.com.dius.pact.core.model.BasePact::lookupVersion you should be able to poke around.