  def main():
      test = TestUniqueChars()
      test.test_unique_chars(unique_chars)
      try:
          test.test_unique_chars(unique_chars_hash)
          test.test_unique_chars(unique_chars_inplace)
      except NameError:
          # Alternate solutions are only defined
          # in the solutions file
          pass
  
 
</s> remove     test.test_unique_chars(unique_chars)
 </s> add     unique_chars = UniqueChars()
    test.test_unique_chars(unique_chars.has_unique_chars) </s> remove     "        test.test_unique_chars(unique_chars_hash)\n",
    "        test.test_unique_chars(unique_chars_inplace)\n",
 </s> add     "        unique_chars_set = UniqueCharsSet()\n",
    "        test.test_unique_chars(unique_chars_set.has_unique_chars)\n",
    "        unique_chars_in_place = UniqueCharsInPlace()\n",
    "        test.test_unique_chars(unique_chars_in_place.has_unique_chars)\n", </s> remove     "        test.test_unique_chars(unique_chars_hash)\n",
    "        test.test_unique_chars(unique_chars_inplace)\n",
 </s> add     "        unique_chars_set = UniqueCharsSet()\n",
    "        test.test_unique_chars(unique_chars_set.has_unique_chars)\n",
    "        unique_chars_in_place = UniqueCharsInPlace()\n",
    "        test.test_unique_chars(unique_chars_in_place.has_unique_chars)\n", </s> remove     "    test.test_unique_chars(unique_chars)\n",
 </s> add     "    unique_chars = UniqueChars()\n",
    "    test.test_unique_chars(unique_chars.has_unique_chars)\n", </s> remove     "    test.test_unique_chars(unique_chars)\n",
 </s> add     "    unique_chars = UniqueChars()\n",
    "    test.test_unique_chars(unique_chars.has_unique_chars)\n",
        unique_chars_set = UniqueCharsSet()
        test.test_unique_chars(unique_chars_set.has_unique_chars)
        unique_chars_in_place = UniqueCharsInPlace()
        test.test_unique_chars(unique_chars_in_place.has_unique_chars)
  def main():
      test = TestUniqueChars()
      test.test_unique_chars(unique_chars)
      try:
        unique_chars_set = UniqueCharsSet()
        test.test_unique_chars(unique_chars_set.has_unique_chars)
        unique_chars_in_place = UniqueCharsInPlace()
        test.test_unique_chars(unique_chars_in_place.has_unique_chars)
        unique_chars_set = UniqueCharsSet()
        test.test_unique_chars(unique_chars_set.has_unique_chars)
        unique_chars_in_place = UniqueCharsInPlace()
        test.test_unique_chars(unique_chars_in_place.has_unique_chars)
      except NameError:
          # Alternate solutions are only defined
          # in the solutions file
          pass
  
keep keep keep keep replace replace keep keep keep keep keep
 Move unique chars to a class 
arrays_strings/unique_chars/test_unique_chars.py