scalacheck: Generate a non empty string

Another way is to create a fix length random string

Gen.listOfN(10, Gen.asciiPrintableChar).map(_.mkString)

or to create a random length with a constrained length

for {
  n     <- Gen.chooseNum(5, 20)
  chars <- Gen.listOfN(n, Gen.asciiPrintableChar)
} yield chars.mkString

The accepted answer caused a high ratio of discarded tests for me, I ended up using:

import org.scalacheck._

Arbitrary(Gen.nonEmptyListOf[Char](Arbitrary.arbChar.arbitrary)).map(_.mkString))

What I was looking for was:

import org.scalacheck.Arbitrary.arbitrary

arbitrary[String].suchThat(!_.isEmpty)

and can be used like

for {
  name <- arbitrary[String].suchThat(!_.isEmpty)
  age  <- Gen.choose(0, 100)
} yield Person(name, age)

Hopefully this helps someone

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