Value class does not deserialize json

[searler]

Thank you for implementing #50

Unfortunately there appears to be a defect in AvroInputStream for both binary and json

package com.sksamuel.avro4s.examples


import com.sksamuel.avro4s.AvroSchema
import org.scalatest.{Matchers, WordSpec}

case class Wrapper(val underlying: Int) extends AnyVal
case class Test(i:Int,w:Wrapper)

class ValueClassExamples extends WordSpec with Matchers {
  import java.io.{ByteArrayInputStream, ByteArrayOutputStream}
  import com.sksamuel.avro4s.{AvroInputStream, AvroOutputStream}

  "AvroStream json serialization" should {

    "round trip the value class " in {
      val baos = new ByteArrayOutputStream()
      val output = AvroOutputStream.json[Test](baos)
      output.write(Test(2,Wrapper(10)))
      output.close()

      val json = baos.toString("UTF-8")

      json shouldBe ("""{"i":2,"w":10}""") // as expected

      val in = new ByteArrayInputStream(json.getBytes("UTF-8"))
      val input = AvroInputStream.json[Test](in) //  <=== fails
      val result = input.iterator.toSeq
      result shouldBe Vector("")
    }
  }

}

The stack trace is

10 (of class java.lang.Integer)
scala.MatchError: 10 (of class java.lang.Integer)
    at com.sksamuel.avro4s.LowPriorityFromValue$$anon$1.apply(FromRecord.scala:22)

[sksamuel]

Is this a new test case you'd like me to add, and then get working?

[sksamuel]

I've got all it working now, new tests for binary / json value classes

[sksamuel]

d7ceecf

[sksamuel]

I'll release this and coproducts as 1.6.0

[searler]

Confirmed my tests pass

Thank you