Usigned numbers don't serialize as expected

[rotilho]

Describe the bug
Unsigned numbers inside a object serializes as signed numbers

To Reproduce
Create a data class with an ULong.MAX_VALUE field
Try to serialize it

Expected behavior
Serialize as ULong.MAX_VALUE instead of -1

Versions
Kotlin:
Jackson-module-kotlin: 2.13
Jackson-databind: 2.13

[cowtowncoder]

Although description should be enough to reproduce the issue, adding sample test inline (or PR if preferred) could speed up resolution.

[rotilho]

Sorry! Please find below:

    data class TestClass(val myNumber : ULong)
    
    @Test
    fun `test wrapped ULong`() {
        val test = TestClass(ULong.MAX_VALUE)
        val json = mapper.writeValueAsString(test)
        val deserialized = mapper.readValue<TestClass>(json)
        assertThat(deserialized, equalTo(test))
    }

Obs.: This test will also fail due to #525

[k163377]

unsigned integers is a value class (inline class).
Therefore, it is assumed that jackson-module-kotlin does not support those cases yet.

Although serializers for unsigned integers are defined, they only apply to the following patterns that are not unboxed.
https://kotlinlang.org/docs/inline-classes.html#representation

These, along with #525, seem to be related to #199.

[k163377]

@rotilho
I came up with a plan to improve on this problem and created a PR.
#527

[dinomite]

@rotilho I merged @k163377 's fix in #527. This should be fixed when 2.13.2 is released

[rotilho]

Thank you for the work guys. Looking forward for the 2.13.2 release