Velocity is the fastest way to execute scripts.

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112local fire = Instance.new("Fire")
part:replace(part, fire)
assert(part ~= fire, "Part was not replaced with Fire")
end

test("cloneref", function()
  local part = Instance.new("Part")
  local clone = cloneref(part)
  assert(part ~= clone, "clone should not be equal to original")
  clone.Name = "Test"
  assert(part.Name == "Test", "clone should have updated the original")
end)

test("compareinstances", function()
  local part = Instance.new("Part")
  local clone = cloneref(part)
  assert(part ~= clone, "clone should not be equal to original")
  assert(compareinstances(part, clone), "clone should equal original")
end)