Fix attribute serializer

maps-kt-features/src/commonMain/kotlin/center.sciprog.attributes/AttributesSerializer.kt

@@ -6,9 +6,7 @@ import kotlinx.serialization.KSerializer
 import kotlinx.serialization.descriptors.SerialDescriptor
 import kotlinx.serialization.encoding.Decoder
 import kotlinx.serialization.encoding.Encoder
-import kotlinx.serialization.json.Json
-import kotlinx.serialization.json.JsonObject
-import kotlinx.serialization.json.buildJsonObject
+import kotlinx.serialization.json.*
 
 public class AttributesSerializer(
     private val serializableAttributes: Set<SerializableAttribute<*>>,
@@ -21,7 +19,13 @@ public class AttributesSerializer(
         val attributeMap: Map<SerializableAttribute<*>, Any> = jsonElement.entries.associate { (key, element) ->
             val attr = serializableAttributes.find { it.serialId == key }
                 ?: error("Attribute serializer for key $key not found")
-            val value = Json.decodeFromJsonElement(attr.serializer, element) ?: error("Null values are not allowed")
+
+            val json = if (decoder is JsonDecoder) {
+                decoder.json
+            } else {
+                Json { serializersModule = decoder.serializersModule }
+            }
+            val value = json.decodeFromJsonElement(attr.serializer, element) ?: error("Null values are not allowed")
 
             attr to value
         }
@@ -33,9 +37,16 @@ public class AttributesSerializer(
             value.content.forEach { (key, value) ->
                 if (key !in serializableAttributes) error("An attribute key $key is not in the list of allowed attributes for this serializer")
                 val serializableKey = key as SerializableAttribute
+
+                val json = if (encoder is JsonEncoder) {
+                    encoder.json
+                } else {
+                    Json { serializersModule = encoder.serializersModule }
+                }
+
                 put(
                     serializableKey.serialId,
-                    Json.encodeToJsonElement(serializableKey.serializer as KSerializer<Any>, value)
+                    json.encodeToJsonElement(serializableKey.serializer as KSerializer<Any>, value)
                 )
             }
         }

maps-kt-features/src/commonTest/kotlin/center/sciprog/attributes/AttributesSerializationTest.kt

@@ -7,10 +7,18 @@ import kotlin.test.assertEquals
 
 internal class AttributesSerializationTest {
 
+    internal class TestAttributeContainer(val attributes: Attributes)
+
+//    internal object TestContainerAttribute: SerializableAttribute<TestAttributeContainer>("container", se)
+
     internal object TestAttribute : SerializableAttribute<Map<String, String>>("test", serializer())
 
     @Test
     fun restore() {
+//
+//        val serializersModule = SerializersModule {
+//            contextual(AttributesSerializer(setOf()))
+//        }
         val serializer = AttributesSerializer(setOf(NameAttribute, TestAttribute))