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A @QuarkusTest with a ParameterResolver that return a java record, throws an exception

See original GitHub issue

Describe the bug

During a QuarkuTest, when using a junit “ParameterResolver” that return a java record with at least one field, xstream return this error:

com.thoughtworks.xstream.converters.ConversionException: 
---- Debugging information ----
cause-exception     : java.lang.UnsupportedOperationException
cause-message       : can't get field offset on a record class: private final java.lang.String com.example.TestRecord.test
class               : com.example.TestRecord
required-type       : com.example.TestRecord
converter-type      : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path                : /com.example.TestRecord/test
line number         : 2
version             : 1.4.15
-------------------------------

The problem in quarkus is at io.quarkus.test.junit.internal.XStreamDeepClone.doClone(XStreamDeepClone.java:49)

As far as I understand, this class use xstream to just create a copy of the object (the java record) in the Quarkus ClassLoader. If it’s the only usage, i think we can use another library that support records (and maybe use json instead of XML).

what do you think?

The cause is:

java.lang.UnsupportedOperationException: can't get field offset on a record class: private final java.lang.String com.example.TestRecord.test
	at jdk.unsupported/sun.misc.Unsafe.objectFieldOffset(Unsafe.java:648)
	at com.thoughtworks.xstream.converters.reflection.SunUnsafeReflectionProvider.getFieldOffset(SunUnsafeReflectionProvider.java:105)

To Reproduce

It’s very simple.

1- Create a Java record, with at least one field record TestRecord(String test)

2- Create a ParameterResolver that return the record new TestRecord("my test")

3- Create a quarkus test that use that ParameterResolver eg:

@QuarkusTest
@ExtendWith(TestRecordResolver.class)
public class QuarkusRecordTest {
  @Test
  public void test(TestRecord record) {
    assert record != null;
  }

}