(
  "before block",
  [
    { unit => "S", value => 50 },
    { unit => "T", value => 60 },
    { unit => "Q", value => 70 },
  ],
)
(
  "using dclone in block",
  [
    { unit => "S", value => 50 },
    { unit => "S", value => 60 },
    { unit => "S", value => 70 },
  ],
)
(
  "after block",
  [
    { unit => "S", value => 50 },
    { unit => "T", value => 60 },
    { unit => "Q", value => 70 },
  ],
)