Manually merge one test from 2.12

Author: cowtowncoder

src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/github/Github308.kt

@@ -0,0 +1,35 @@
+package com.fasterxml.jackson.module.kotlin.test.github
+
+import com.fasterxml.jackson.annotation.JsonIgnore
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties
+import com.fasterxml.jackson.annotation.JsonProperty
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.fasterxml.jackson.module.kotlin.readValue
+import org.junit.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+import kotlin.test.assertNull
+
+class Github308 {
+
+    @JsonIgnoreProperties(ignoreUnknown = true)
+    data class TestDto(
+            @JsonIgnore
+            var id: Long? = null,
+            var cityId: Int? = null
+    ) {
+        @JsonProperty("id")
+        private fun unpackId(idObj: Int?) {
+            cityId = idObj
+        }
+    }
+
+    @Test
+    fun createTestDto() {
+        val dto: TestDto = jacksonObjectMapper().readValue("""{"id":12345}""")
+
+        assertNotNull(dto)
+        assertNull(dto.id)
+        assertEquals(dto.cityId, 12345)
+    }
+}