BsonReaderDecoder throws BsonInvalidOperationException when skipping an object or array value

[rohitkumbhar]

Expected Behavior

BsonReaderDecoder should be able to skip any non-primitive value

Actual Behaviour

BsonReaderDecoder gets an exception when trying to skip an object or array value

readStartDocument can only be called when State is VALUE, not when State is END_OF_DOCUMENT.
org.bson.BsonInvalidOperationException: readStartDocument can only be called when State is VALUE, not when State is END_OF_DOCUMENT.
	at app//org.bson.AbstractBsonReader.throwInvalidState(AbstractBsonReader.java:668)
	at app//org.bson.AbstractBsonReader.verifyBSONType(AbstractBsonReader.java:686)
	at app//org.bson.AbstractBsonReader.checkPreconditions(AbstractBsonReader.java:721)
	at app//org.bson.AbstractBsonReader.readStartDocument(AbstractBsonReader.java:449)
	at app//io.micronaut.serde.bson.BsonReaderDecoder.nextToken(BsonReaderDecoder.java:99)
	at app//io.micronaut.serde.support.AbstractStreamDecoder.skipValue(AbstractStreamDecoder.java:844)
	at io.micronaut.serde.bson.BsonReaderDecoderJsonSpec.skip unknown object decode(BsonReaderDecoderJsonSpec.groovy:150)

Steps To Reproduce

Failing test:

 def 'skip unknown object decode'() {
        given:
        // data has a key "nested" with an object as a value 
        def data = '{ "name": "Foo", "nested": {"key": "value"}}'
        when:
        def w = createDecoder(data).decodeObject()
        then:

        while (true) {
            def key = w.decodeKey()
            if (key == "nested") {
                // Attempt to skip nested
                w.skipValue()
                break
            } else {
                w.decodeString()
            }
        }
    }

The skipValue() call causes the exception above.
NOTE: If I change the value type of the nested key to a String, the skipValue() call does not throw an exception

Environment Information

No response

Example Application

No response

Version

micronaut-serde-bson 1.3.3