Hello lovely Kotliners! In my test, this line whe...

# getting-started

[Noah]

Hello lovely Kotliners!

In my test, this line where I mock a return from repository

every { repository.save(any()) } returns fleetEntity

Returns the following after switching JDK from Eclipse Temurin to docker.io/ibm-semeru-runtimes:open-17.0.13_11-jdk

FleetServiceTest > should return created fleet given request() FAILED
    io.mockk.MockKException at FleetServiceTest.kt:44
        Caused by: java.lang.ClassCastException at FleetServiceTest.kt:44

repository interface:

package org.springframework.data.repository;

import java.util.Optional;

@NoRepositoryBean
public interface CrudRepository<T, ID> extends Repository<T, ID> {
    <S extends T> S save(S entity);

    <S extends T> Iterable<S> saveAll(Iterable<S> entities);

    Optional<T> findById(ID id);

    boolean existsById(ID id);

    Iterable<T> findAll();

    Iterable<T> findAllById(Iterable<ID> ids);

    long count();

    void deleteById(ID id);

    void delete(T entity);

    void deleteAllById(Iterable<? extends ID> ids);

    void deleteAll(Iterable<? extends T> entities);

    void deleteAll();
}

Any ideas as to why this CastException occurs all of a sudden after changing the JDK? This is important because the new JDK image has a significantly smaller memory footprint.

[ephemient]

there is a #C9EJFT6DB channel

[ephemient]

but as you mention IBM Semeru, this looks like an existing bug: https://github.com/mockk/mockk/issues/726