Behavior change in 0.86.1 - expected or not?

[jpd236]

In 0.86.0, the following code:

    @Serializable
    @SerialName("test-b")
    data class TestB(val data: Boolean)

    @Test
    fun parse() {
        val xml = "<test-a data=\"true\"></test-a>"
        val testB = XML.decodeFromString(TestB.serializer(), xml)
        println(testB)
    }

will result in an error:

nl.adaptivity.xmlutil.XmlException: local name test-a does not match expected "test-b"
	at nl.adaptivity.xmlutil.XmlReader$DefaultImpls.require(XmlReader.kt:78)
	at nl.adaptivity.xmlutil.XmlBufferedReaderBase.require(XmlBufferedReaderBase.kt:27)
	at nl.adaptivity.xmlutil.XmlReader$DefaultImpls.require(XmlReader.kt:84)
	at nl.adaptivity.xmlutil.XmlBufferedReaderBase.require(XmlBufferedReaderBase.kt:27)
	at nl.adaptivity.xmlutil.serialization.XmlDecoderBase$TagDecoder.endStructure(XMLDecoder.kt:849)
	at com.jeffpdavidson.kotwords.model.CrosswordTest$TestB$$serializer.deserialize(CrosswordTest.kt:18)
	at com.jeffpdavidson.kotwords.model.CrosswordTest$TestB$$serializer.deserialize(CrosswordTest.kt:18)
	at nl.adaptivity.xmlutil.serialization.XmlDecoderBase$XmlDecoder.decodeSerializableValue(XMLDecoder.kt:236)
	at nl.adaptivity.xmlutil.serialization.XML.decodeFromReader(XML.kt:414)
	at nl.adaptivity.xmlutil.serialization.XML.decodeFromReader$default(XML.kt:385)
	at nl.adaptivity.xmlutil.serialization.XML.decodeFromString(XML.kt:351)
	at nl.adaptivity.xmlutil.serialization.XML$Companion.decodeFromString(XML.kt:783)

This makes sense to me, and is long-standing behavior - the tag specified in @SerialName doesn't match the tag in the XML.

However, in 0.86.1 (or 0.86.2), parsing succeeds as TestB(data=true).

Is it expected that parsing should work even if the root tag is wrong? I looked at the 0.86.1 release notes and didn't see anything that obviously corresponded to such a behavior change.

[pdvrieze]

This is an issue (#187 )