fix test case where scala user wants alphabetic sorting of properties (#773)

Author: pjfanning

src/main/scala/tools/jackson/module/scala/introspect/ScalaAnnotationIntrospectorModule.scala

@@ -42,7 +42,7 @@ class ScalaAnnotationIntrospectorInstance(scalaAnnotationIntrospectorModule: Sca
   override def findSerializationSortAlphabetically(config: MapperConfig[_], ann: Annotated): java.lang.Boolean = {
     ann match {
       case ac: AnnotatedClass if scalaAnnotationIntrospectorModule.isMaybeScalaBeanType(ac.getAnnotated) =>
-        java.lang.Boolean.FALSE
+        !config.isEnabled(MapperFeature.SORT_CREATOR_PROPERTIES_FIRST)
       case _ => None.orNull
     }
   }

src/test/scala/tools/jackson/module/scala/ser/CaseClassSerializerTest.scala

@@ -3,7 +3,7 @@ package tools.jackson.module.scala.ser
 import com.fasterxml.jackson.annotation.JsonProperty.Access
 import com.fasterxml.jackson.annotation._
 import tools.jackson.databind.cfg.MutableConfigOverride
-import tools.jackson.databind.{ObjectMapper, PropertyNamingStrategies}
+import tools.jackson.databind.{MapperFeature, ObjectMapper, PropertyNamingStrategies}
 import tools.jackson.module.scala.DefaultScalaModule
 
 import scala.beans.BeanProperty
@@ -66,6 +66,7 @@ case class ClassWithOnlyUnitField(field: Unit)
 
 object CaseClassSerializerTest {
   case class BigDecimalHolder(bigDecimal: BigDecimal)
+  case class ClassWithUnorderedFields(f3: Int = 3, f2: Int = 2, f0: Int = 0, f1: Int = 1)
 }
 
 class CaseClassSerializerTest extends SerializerTest {
@@ -229,4 +230,12 @@ class CaseClassSerializerTest extends SerializerTest {
         (c: MutableConfigOverride) => c.setFormat(JsonFormat.Value.forShape(JsonFormat.Shape.STRING)))
     serialize(BigDecimalHolder(BigDecimal("123.456")), builder.build()) shouldEqual """{"bigDecimal":"123.456"}"""
   }
+
+  it should "sort properties of the case class" in {
+    val mapper = newBuilder
+      .enable(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY)
+      .disable(MapperFeature.SORT_CREATOR_PROPERTIES_FIRST)
+      .build()
+    serialize(ClassWithUnorderedFields(), mapper) shouldEqual """{"f0":0,"f1":1,"f2":2,"f3":3}"""
+  }
 }