package gs.slug.v0

class SlugTests extends munit.FunSuite:

  test("should instantiate valid slugs") {
    ('a' to 'z').foreach(c => assertValidSlug(c.toString()))
    ('0' to '9').foreach(c => assertValidSlug(c.toString()))
    (1 to 10).foreach(parts => assertValidSlug(segmented(parts)))
  }

  test("should reject invalid slugs") {
    ('A' to 'Z').foreach(c => assertInvalidSlug(c.toString()))
    assertInvalidSlug("-")
    assertInvalidSlug("_")
    assertInvalidSlug("a--z")
    assertInvalidSlug("-a")
    assertInvalidSlug("a-")
    assertInvalidSlug("a_z")
    assertInvalidSlug("a-b-c--d")
    assertInvalidSlug("1--2")
    assertInvalidSlug("!")
    assertInvalidSlug("@")
    assertInvalidSlug("#")
    assertInvalidSlug("$")
    assertInvalidSlug("%")
    assertInvalidSlug("^")
    assertInvalidSlug("&")
    assertInvalidSlug("*")
    assertInvalidSlug("(")
    assertInvalidSlug(")")
    assertInvalidSlug("=")
    assertInvalidSlug("+")
    assertInvalidSlug(";")
    assertInvalidSlug(":")
    assertInvalidSlug(",")
    assertInvalidSlug(".")
    assertInvalidSlug("<")
    assertInvalidSlug(">")
    assertInvalidSlug("/")
    assertInvalidSlug("?")
    assertInvalidSlug("'")
    assertInvalidSlug("\"")
    assertInvalidSlug("[")
    assertInvalidSlug("{")
    assertInvalidSlug("]")
    assertInvalidSlug("}")
    assertInvalidSlug("\\")
    assertInvalidSlug("|")
  }

  private def assertValidSlug(candidate: String): Unit =
    assert(Slug.validate(candidate).map(_.str()) == Some(candidate))

  private def assertInvalidSlug(candidate: String): Unit =
    assert(Slug.validate(candidate) == None)

  private def segmented(parts: Int): String =
    val segment = ('a' to 'z').mkString ++ ('0' to '9').mkString
    (1 to parts).map(_ => segment).mkString("-")