Gzip Scala

Gzip.scala

import java.io.{ByteArrayOutputStream, ByteArrayInputStream}
import java.util.zip.{GZIPOutputStream, GZIPInputStream}

import scala.util.Try

object Gzip {

  def compress(input: Array[Byte]): Array[Byte] = {
    val bos = new ByteArrayOutputStream(input.length)
    val gzip = new GZIPOutputStream(bos)
    gzip.write(input)
    gzip.close()
    val compressed = bos.toByteArray
    bos.close()
    compressed
  }

  def decompress(compressed: Array[Byte]): Option[String] =
    Try {
      val inputStream = new GZIPInputStream(new ByteArrayInputStream(compressed))
      scala.io.Source.fromInputStream(inputStream).mkString
    }.toOption
}

GzipSpec.scala

class GzipSpec extends WordSpecLike with Matchers {

  "The GZIP object" should {

    "decompress a compressed string" in {
      val input = Gzip.compress("Hello World".getBytes("UTF-8"))
      Gzip.decompress(input) shouldBe Some("Hello World")
    }
  }
}