One More Test 

$formatter->columns(8);
is(
  $formatter->format("abcdefgh"),
  "abcdefgh",
  'packing one full-length word worked'
);

• Test results:

t/01_basics....NOK 20
#     Failed test (t/01_basics.t at line 115)
#          got: '
# abcdefgh'
#     expected: 'abcdefgh'