import unittest

import isogram

suite "Isogram":

  test "empty string":
    check isIsogram("") == true
    
  test "isogram with only lower case characters":
    check isIsogram("isogram") == true
    
  test "word with one duplicated character":
    check isIsogram("eleven") == false
    
  test "longest reported english isogram":
    check isIsogram("subdermatoglyphic") == true
    
  test "word with duplicated character in mixed case":
    check isIsogram("Alphabet") == false
    
  test "hypothetical isogrammic word with hyphen":
    check isIsogram("thumbscrew-japingly") == true
    
  test "isogram with duplicated hyphen":
    check isIsogram("six-year-old") == true

  test "made up name that is an isogram":
    check isIsogram("Emily Jung Schwartzkopf") == true

  test "duplicated character in the middle":
    check isIsogram("accentor") == false