Add missing tests for JVM-only collection types

Author: plokhotnyuk

jsoniter-scala-macros/jvm/src/test/scala/com/github/plokhotnyuk/jsoniter_scala/macros/JsonCodecMakerJVMSpec.scala

@@ -8,6 +8,14 @@ class JsonCodecMakerJVMSpec extends VerifyingSpec {
   import NamespacePollutions._
 
   "JsonCodecMaker.make generate codecs which" should {
+    "serialize and deserialize JVM-only collection types" in {
+      verifySerDeser(make[_root_.scala.collection.concurrent.TrieMap[String, Int]],
+        _root_.scala.collection.concurrent.TrieMap[String, Int]("WWW" -> 1, "VVV" -> 2),
+        """{"WWW":1,"VVV":2}""")
+      verifySerDeser(make[_root_.scala.collection.mutable.WeakHashMap[String, Int]],
+        _root_.scala.collection.mutable.WeakHashMap[String, Int]("WWW" -> 1, "VVV" -> 2),
+        """{"WWW":1,"VVV":2}""")
+    }
     "serialize and deserialize recursive structures with an implicit codec using a minimal thread stack" in {
       case class Nested(n: Option[Nested] = _root_.scala.None)