Kafka Streams Scala Stack Overflow Issue

build.sbt

name := "kstreams-scala-recusion"

version := "0.1"

scalaVersion := "2.12.4"

libraryDependencies ++= Seq(
  "com.lightbend"                %% "kafka-streams-scala"      % "0.1.2" exclude("org.slf4j", "slf4j-log4j12"),
  "org.scalatest"                %% "scalatest"                % "3.0.5" % "test"
)

Streams.scala

package com.recursion

import com.lightbend.kafka.scala.streams.StreamsBuilderS
import org.apache.kafka.streams.kstream.Materialized

object Streams {
  def build() = {
    val sb = new StreamsBuilderS()
    sb.table[String, String]("topic").filter((k,v) => v.length > 0, Materialized.as("STACKOVERFLOW"))
    sb
  }
}

StreamsSpec.scala

package com.recursion

import org.scalatest.{Matchers, WordSpec}

class StreamsSpec extends WordSpec with Matchers {
  "The Filter Method" should {
    "throw StackOverflow" in {
      assertThrows[StackOverflowError] {
        Streams.build()
      }
    }
  }
}