add test replay token with complex object as String context

Author: MateuszNaKodach

kotlin/src/test/kotlin/org/axonframework/extensions/kotlin/serializer/AxonSerializersTest.kt

@@ -15,6 +15,11 @@
  */
 package org.axonframework.extensions.kotlin.serializer
 
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.module.kotlin.KotlinModule
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import org.axonframework.eventhandling.GapAwareTrackingToken
 import org.axonframework.eventhandling.GlobalSequenceTrackingToken
@@ -38,6 +43,7 @@ import org.axonframework.serialization.SimpleSerializedObject
 import org.axonframework.serialization.SimpleSerializedType
 import org.axonframework.serialization.json.JacksonSerializer
 import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertInstanceOf
 import org.junit.jupiter.api.Test
 
 internal class AxonSerializersTest {
@@ -101,6 +107,25 @@ internal class AxonSerializersTest {
         assertEquals(token, serializer.deserializeTrackingToken(token.javaClass.name, json))
     }
 
+    @Test
+    fun `replay token with complex object as String context`() {
+        @Serializable
+        data class ComplexContext(val value1: String, val value2: Int, val value3: Boolean)
+        val complexContext = ComplexContext("value1", 2, false)
+
+        val token = ReplayToken.createReplayToken(
+            GlobalSequenceTrackingToken(15),
+            GlobalSequenceTrackingToken(10),
+            Json.encodeToString(complexContext)
+        )
+        val json = """{"tokenAtReset":{"type":"org.axonframework.eventhandling.GlobalSequenceTrackingToken","globalIndex":15},"currentToken":{"type":"org.axonframework.eventhandling.GlobalSequenceTrackingToken","globalIndex":10},"context":"{\"value1\":\"value1\",\"value2\":2,\"value3\":false}"}""".trimIndent()
+        assertEquals(json, serializer.serialize(token, String::class.java).data)
+        val deserializedToken = serializer.deserializeTrackingToken(token.javaClass.name, json) as ReplayToken
+        assertEquals(token, deserializedToken)
+        assertInstanceOf(String::class.java, deserializedToken.context())
+        assertEquals(complexContext, Json.decodeFromString<ComplexContext>(deserializedToken.context() as String))
+    }
+
     @Test
     fun globalSequenceTrackingToken() {
         val token = GlobalSequenceTrackingToken(5)