TreeSeqMap deserialization (#666)

* TreeSeqMap deserialization

* try to fix tests

Author: pjfanning

src/main/scala-2.13/com/fasterxml/jackson/module/scala/deser/UnsortedMapDeserializerModule.scala

@@ -24,6 +24,7 @@ trait UnsortedMapDeserializerModule extends MapTypeModifierModule {
       (classOf[mutable.LinkedHashMap[_, _]], mutable.LinkedHashMap),
       (classOf[mutable.ListMap[_, _]], mutable.ListMap),
       (classOf[mutable.Map[_, _]], mutable.Map),
+      (classOf[immutable.TreeSeqMap[_, _]], immutable.TreeSeqMap),
       (classOf[concurrent.TrieMap[_, _]], concurrent.TrieMap)
     ))
 

src/test/scala-2.13/com/fasterxml/jackson/module/scala/deser/Map2DeserializerTest.scala

@@ -0,0 +1,19 @@
+package com.fasterxml.jackson.module.scala.deser
+
+import com.fasterxml.jackson.core.`type`.TypeReference
+import com.fasterxml.jackson.module.scala.{DefaultScalaModule, JacksonModule}
+
+import scala.collection.immutable
+
+class Map2DeserializerTest extends DeserializerTest {
+
+  lazy val module: JacksonModule = DefaultScalaModule
+
+  "An ObjectMapper with the SortedMapDeserializerModule" should "deserialize an object into an TreeSeqMap" in {
+    val result = deserialize(mapJson, new TypeReference[immutable.TreeSeqMap[String,String]]{})
+    result should equal (mapScala)
+  }
+
+  private val mapJson =  """{ "one": "1", "two": "2" }"""
+  private val mapScala = collection.SortedMap("one"->"1","two"->"2")
+}

src/test/scala-3/com/fasterxml/jackson/module/scala/deser/Map2DeserializerTest.scala

@@ -0,0 +1,19 @@
+package com.fasterxml.jackson.module.scala.deser
+
+import com.fasterxml.jackson.core.`type`.TypeReference
+import com.fasterxml.jackson.module.scala.{DefaultScalaModule, JacksonModule}
+
+import scala.collection.immutable
+
+class Map2DeserializerTest extends DeserializerTest {
+
+  lazy val module: JacksonModule = DefaultScalaModule
+
+  "An ObjectMapper with the SortedMapDeserializerModule" should "deserialize an object into an TreeSeqMap" in {
+    val result = deserialize(mapJson, new TypeReference[immutable.TreeSeqMap[String,String]]{})
+    result should equal (mapScala)
+  }
+
+  private val mapJson =  """{ "one": "1", "two": "2" }"""
+  private val mapScala = collection.SortedMap("one"->"1","two"->"2")
+}