JsonProperty test for map key

src/test/java/com/fasterxml/jackson/module/scala/AnnotatedColor.java

@@ -0,0 +1,7 @@
+package com.fasterxml.jackson.module.scala;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public enum AnnotatedColor {
+    @JsonProperty("red") RED
+}

src/test/scala-3/com/fasterxml/jackson/module/scala/enum/ColorEnum.scala

@@ -1,5 +1,7 @@
 package com.fasterxml.jackson.module.scala.`enum`
 
+import com.fasterxml.jackson.annotation.JsonProperty
+
 enum ColorEnum { case Red, Green, Blue }
 
 case class Colors(set: Set[ColorEnum])

src/test/scala/com/fasterxml/jackson/module/scala/ser/MapSerializerTest.scala

@@ -5,7 +5,7 @@ import com.fasterxml.jackson.annotation.{JsonInclude, JsonProperty, JsonSubTypes
 import com.fasterxml.jackson.core.JsonGenerator
 import com.fasterxml.jackson.databind.annotation.JsonSerialize
 import com.fasterxml.jackson.databind.{JsonSerializer, SerializationFeature, SerializerProvider}
-import com.fasterxml.jackson.module.scala.{DefaultScalaModule, JacksonModule}
+import com.fasterxml.jackson.module.scala.{AnnotatedColor, DefaultScalaModule, JacksonModule}
 
 import scala.annotation.meta.getter
 import scala.beans.BeanProperty
@@ -22,7 +22,6 @@ class TupleKeySerializer extends JsonSerializer[Product] {
   }
 }
 
-
 object MapSerializerTest {
 
   class BeanieWeenie(@BeanProperty @JsonProperty("a") var a: Int,
@@ -117,4 +116,9 @@ class MapSerializerTest extends SerializerTest {
     val v = m.writeValueAsString(wrapper)
     v shouldBe """{"map":{}}"""
   }
+
+  it should "support JsonProperty annotation on Java enum key" in {
+    val map = Map(AnnotatedColor.RED -> "redValue")
+    newMapper.writeValueAsString(map) shouldEqual """{"red":"redValue"}"""
+  }
 }