reproduction for FasterXML#542

src/test/scala-2.+/com/fasterxml/jackson/module/scala/QuxTest.scala

@@ -0,0 +1,22 @@
+package com.fasterxml.jackson.module.scala
+
+import org.scalatest.funsuite.AnyFunSuite
+import com.fasterxml.jackson.databind.json.JsonMapper
+
+object Wrapper {
+  object Foo {
+    class Baz(val num: Int)
+  }
+}
+class Qux(val qux: Wrapper.Foo.Baz)
+
+class QuxTest extends AnyFunSuite {
+  test("Quxin") {
+    val objectMapper =
+      (JsonMapper
+        .builder().addModule(
+          DefaultScalaModule).build() :: ScalaObjectMapper)
+    val qux = objectMapper.readValue[Qux]("""{"qux": {"num": "3"}}""")
+    assert(qux.qux.num == 3)
+  }
+}

src/test/scala-2.+/com/fasterxml/jackson/module/scala/ScalaObjectMapperTest.scala

@@ -59,11 +59,6 @@ object ScalaObjectMapperTest {
     val stringLongMap = Map[String, Long]("1" -> 11L, "2" -> 22L)
   }
 
-  object BarWrapper {
-    object Bar {
-      final case class Baz(num: Int)
-    }
-  }
 }
 
 class ScalaObjectMapperTest extends JacksonTest {
@@ -301,11 +296,6 @@ class ScalaObjectMapperTest extends JacksonTest {
     result shouldEqual 11
   }
 
-  it should "deserialize BarWrapper.Bar.Baz" in {
-    val baz = mapper.readValue[BarWrapper.Bar.Baz]("""{"num": "3"}""")
-    baz.num shouldEqual 3
-  }
-
   // No tests for the following functions:
   //  def acceptJsonFormatVisitor[T: Manifest](visitor: JsonFormatVisitorWrapper): Unit