Provide wrapper test method in FuzzTest to make testing easier

[emilyselwood]

It is sometimes helpful to be able to run a single look of a fuzz test to prove the code works.

An easy way to do this is create a simple wrapper method like

  @Test
  def wrapper(): Unit = {
    test(Array[Byte](0x0F))
  }

If this was built into the FuzzTest Interface this would be handy (Probably need to change it to an abstract class)