local errors={}
local function tables_equal(t1, t2)
  if #t1 ~= #t2 then return false end
  for i = 1, #t1 do
    if t1[i] ~= t2[i] then return false end
  end
  return true
end

local function run_test(name, test_func)
  local status, err = pcall(test_func)
  if status then
    print("[PASS] " .. name)
  else
    print("[FAIL] " .. name .. ": " .. err)
    errors[name]=err
  end
end