Porting check for #844

from FasterXML/jackson-module-kotlin#855

Author: k163377

src/test/kotlin/io/github/projectmapk/jackson/module/kogera/zPorted/test/github/GitHub844.kt

@@ -0,0 +1,30 @@
+package io.github.projectmapk.jackson.module.kogera.zPorted.test.github
+
+import com.fasterxml.jackson.annotation.JsonTypeInfo
+import com.fasterxml.jackson.databind.ObjectMapper
+import io.github.projectmapk.jackson.module.kogera.readValue
+import io.github.projectmapk.jackson.module.kogera.registerKotlinModule
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "_type")
+private sealed class BaseClass
+
+private data class ChildClass(val text: String) : BaseClass()
+
+class GitHub844 {
+    @Test
+    fun test() {
+        val json = """
+        {
+            "_type": "ChildClass",
+            "text": "Test"
+        }
+        """
+
+        val jacksonObjectMapper = ObjectMapper().registerKotlinModule()
+        val message = jacksonObjectMapper.readValue<BaseClass>(json)
+
+        assertEquals(ChildClass("Test"), message)
+    }
+}