Fix #807 by enabling MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS on selected tests

src/test/kotlin/tools/jackson/module/kotlin/kogeraIntegration/deser/valueClass/JacksonInjectTest.kt

@@ -1,11 +1,13 @@
 package tools.jackson.module.kotlin.kogeraIntegration.deser.valueClass
 
 import com.fasterxml.jackson.annotation.JacksonInject
-import tools.jackson.module.kotlin.jacksonObjectMapper
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertThrows
 import org.junit.Test
 import tools.jackson.databind.InjectableValues
+import tools.jackson.databind.MapperFeature
+import tools.jackson.module.kotlin.jacksonMapperBuilder
+import tools.jackson.module.kotlin.jacksonObjectMapper
 
 class JacksonInjectTest {
     // This is specified as a getter because there is a possibility of problems if it is assigned to a field.
@@ -63,7 +65,9 @@ class JacksonInjectTest {
     fun dataBind4218Failing() {
         val injectables = InjectableValues.Std(mapOf("pNn" to Primitive(0), "pN" to Primitive(1)))
 
-        val reader = jacksonObjectMapper()
+        val reader = jacksonMapperBuilder()
+            .enable(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS)
+            .build()
             .readerFor(DataBind4218FailingDto::class.java)
             .with(injectables)
 

src/test/kotlin/tools/jackson/module/kotlin/test/KotlinFeatures.kt

@@ -10,6 +10,7 @@ import tools.jackson.module.kotlin.readValue
 import org.hamcrest.CoreMatchers.equalTo
 import org.hamcrest.MatcherAssert.assertThat
 import org.junit.Test
+import tools.jackson.databind.MapperFeature
 import kotlin.properties.Delegates
 import kotlin.test.assertNull
 import kotlin.test.fail
@@ -19,6 +20,9 @@ private data class DataClassPerson(val name: String, val age: Int)
 
 class TestM11Changes {
     val mapper = jacksonObjectMapper()
+    val mapperWithFinalFieldsAsMutators = jacksonMapperBuilder()
+        .enable(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS)
+        .build()
 
     private class Class_With_One_Constructor(val name: String, val age: Int)
 
@@ -61,8 +65,9 @@ class TestM11Changes {
         val expectedJson = """{"name":"John Smith","age":30,"otherThing":"franky"}"""
         val expectedPerson = Class_With_Init_Constructor("John Smith", 30)
 
-        val actualJson = mapper.writeValueAsString(expectedPerson)
-        val newPerson  = mapper.readValue<Class_With_Init_Constructor>(actualJson)
+        // 22-Jun-2024, tatu: Requires forcibly setting val (final field) hence:
+        val actualJson = mapperWithFinalFieldsAsMutators.writeValueAsString(expectedPerson)
+        val newPerson  = mapperWithFinalFieldsAsMutators.readValue<Class_With_Init_Constructor>(actualJson)
 
         assertThat(actualJson, equalTo(expectedJson))
         assertThat(newPerson, equalTo(expectedPerson))

src/test/kotlin/tools/jackson/module/kotlin/test/ParameterNameTests.kt

@@ -9,6 +9,7 @@ import tools.jackson.module.kotlin.*
 import org.hamcrest.CoreMatchers.equalTo
 import org.hamcrest.MatcherAssert.assertThat
 import org.junit.Test
+import tools.jackson.databind.MapperFeature
 import java.io.StringWriter
 import java.util.*
 import kotlin.properties.Delegates
@@ -48,6 +49,7 @@ class ParameterNameTests {
     private val pascalCasedJson = """{"Name":"Frank","Age":30,"PrimaryAddress":"something here","Renamed":true,"CreatedDt":"2016-10-25T18:25:48.000Z","IsName":false}"""
 
     private val normalCasedMapper = jacksonMapperBuilder()
+            .enable(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS)
             .disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
             .build()
 

src/test/kotlin/tools/jackson/module/kotlin/test/github/Github149.kt

@@ -7,6 +7,7 @@ import com.fasterxml.jackson.annotation.JsonProperty
 import tools.jackson.module.kotlin.jacksonObjectMapper
 import tools.jackson.module.kotlin.jacksonMapperBuilder
 import org.junit.Test
+import tools.jackson.databind.MapperFeature
 
 @Suppress("UNUSED_VARIABLE")
 class TestGithub149 {
@@ -36,6 +37,8 @@ class TestGithub149 {
     @Test
     fun testDeserializationOfManagedReferences() {
         val mapper = jacksonMapperBuilder()
+                // 22-Jun-2024, tatu: Requires forcibly setting val (final field) hence:
+                .enable(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS)
                 .changeDefaultVisibility { v -> v
                             .withFieldVisibility(JsonAutoDetect.Visibility.ANY)
                             .withIsGetterVisibility(JsonAutoDetect.Visibility.NONE)

src/test/kotlin/tools/jackson/module/kotlin/test/github/Github194.kt

@@ -1,20 +1,29 @@
 package tools.jackson.module.kotlin.test.github
 
+import java.util.UUID
+
+import kotlin.test.assertEquals
+
+import org.junit.Test
+
 import com.fasterxml.jackson.annotation.JsonIdentityInfo
 import com.fasterxml.jackson.annotation.ObjectIdGenerators
+import tools.jackson.databind.MapperFeature
+import tools.jackson.module.kotlin.jacksonMapperBuilder
 import tools.jackson.module.kotlin.jacksonObjectMapper
-import org.junit.Test
-import java.util.UUID
-import kotlin.test.assertEquals
 
 class TestGithub194 {
+    val mapperWithFinalFieldsAsMutators = jacksonMapperBuilder()
+        .enable(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS)
+        .build()
+
     val id: UUID = UUID.fromString("149800a6-7855-4e09-9185-02e442da8013")
     val json = """{"id": "$id", "name": "Foo"}"""
 
     @Test
     fun testIdentityInfo() {
         val mapper = jacksonObjectMapper()
-        val value = mapper.readValue(json, WithIdentity::class.java)
+        val value = mapperWithFinalFieldsAsMutators.readValue(json, WithIdentity::class.java)
         assertEquals(id, value.id)
         assertEquals(id.toString(), value.idString)
         assertEquals("Foo", value.name)
@@ -32,7 +41,7 @@ class TestGithub194 {
     @Test
     fun testIdentityInfo_WithDefaultId() {
         val mapper = jacksonObjectMapper()
-        val value = mapper.readValue(json, WithIdentityAndDefaultId::class.java)
+        val value = mapperWithFinalFieldsAsMutators.readValue(json, WithIdentityAndDefaultId::class.java)
         assertEquals(id, value.id)
         assertEquals(id.toString(), value.idString)
         assertEquals("Foo", value.name)

src/test/kotlin/tools/jackson/module/kotlin/test/github/Github211.kt

@@ -1,21 +1,30 @@
 package tools.jackson.module.kotlin.test.github
 
+import kotlin.test.assertEquals
+
+import org.junit.Test
+
 import com.fasterxml.jackson.annotation.JsonMerge
+
 import tools.jackson.databind.JsonNode
+import tools.jackson.databind.MapperFeature
 import tools.jackson.databind.ObjectMapper
 import tools.jackson.databind.node.JsonNodeFactory
 import tools.jackson.databind.node.ObjectNode
-import tools.jackson.module.kotlin.jacksonObjectMapper
-import org.junit.Test
-import kotlin.test.assertEquals
+
+import tools.jackson.module.kotlin.jacksonMapperBuilder
 
 class TestGithub211 {
+    val mapperWithFinalFieldsAsMutators = jacksonMapperBuilder()
+        .enable(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS)
+        .build()
+
     @Test
     fun simple() {
         val original = Person("original", Address("Rivoli", "Paris"))
         val changes = JsonNodeFactory.instance.objectNode().put("username", "updated")
 
-        val merged = JsonMerger(jacksonObjectMapper()).merge(original, changes)
+        val merged = JsonMerger(mapperWithFinalFieldsAsMutators).merge(original, changes)
 
         assertEquals(original.copy(username = "updated"), merged)
     }
@@ -24,7 +33,7 @@ class TestGithub211 {
     fun nested() {
         val original = Person("original", Address("Rivoli", "Paris"))
 
-        val merged = JsonMerger(jacksonObjectMapper()).merge(original, nestedChanges())
+        val merged = JsonMerger(mapperWithFinalFieldsAsMutators).merge(original, nestedChanges())
 
         assertEquals(Person("updated", Address("Magenta", "Paris")), merged)
     }