title: Even Fibonacci Numbers Sum
signature: function even_fibonacci_numbers_sum(limit)
source_py: def even_fibonacci_numbers_sum(limit):
      if (limit < 2):
          return 0
      ef1 = 0
      ef2 = 2
      sm = (ef1 + ef2)
      while (ef2 <= limit):
          ef3 = ((4 * ef2) + ef1)
          if (ef3 > limit):
              break
          ef1 = ef2
          ef2 = ef3
          sm = (sm + ef2)
      return sm
source_cpp: int even_fibonacci_numbers_sum(int limit) {
    if ( limit < 2 ) return 0;
    long long int ef1 = 0, ef2 = 2;
    long long int sum = ef1 + ef2;
    while ( ef2 <= limit ) {
      long long int ef3 = 4 * ef2 + ef1;
      if ( ef3 > limit ) break;
      ef1 = ef2;
      ef2 = ef3;
      sum += ef2;
    }
    return sum;
  }
question_info.entry_fn_name: even_fibonacci_numbers_sum
question_info.entry_cls_name: Solution
question_info.test_case_ids: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
question_info.test_code: 
  
  -- SOLUTION CODE
  -- ============================================
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  function isCorrect(actual, expected)
      if type(expected) ~= type(actual) then
          return false
      end
      
      if type(expected) == 'table' then
          for k,v_expected in pairs(expected) do
              
              if actual[k] == nil then
                  return false
              end
              local v_actual = actual[k]
              if not isCorrect(v_actual, v_expected) then
                  return false
              end
              actual[k]=nil
          end
      
          if next(actual) then 
              return false
          end
          return true
      else
          return actual == expected
      end
  end
  
  function validateSolution(actual, expected)
      return isCorrect(actual,expected)
  end
  
  function driver(limit, expected)
      local exec_result;
      local status, error_msg = pcall(function () 
          exec_result=PLACEHOLDER_FN_NAME(limit) 
      end)
      if status then
          if validateSolution(exec_result,expected) then
              return "PASSED"
          end
          return "FAILED"
      else
          return string.format("ERROR=%s",string.gsub(error_msg,".*:[%d]+: ",""))
      end
  end
      
  function main()
      result = driver(67, 44)
      print(string.format("TEST-0...%s",result))
  
      result = driver(89, 44)
      print(string.format("TEST-1...%s",result))
  
      result = driver(12, 10)
      print(string.format("TEST-2...%s",result))
  
      result = driver(94, 44)
      print(string.format("TEST-3...%s",result))
  
      result = driver(96, 44)
      print(string.format("TEST-4...%s",result))
  
      result = driver(25, 10)
      print(string.format("TEST-5...%s",result))
  
      result = driver(49, 44)
      print(string.format("TEST-6...%s",result))
  
      result = driver(8, 10)
      print(string.format("TEST-7...%s",result))
  
      result = driver(33, 10)
      print(string.format("TEST-8...%s",result))
  
      result = driver(59, 44)
      print(string.format("TEST-9...%s",result))
  
  end
  
  main()
question_info.test_list: [{"idx": 0, "outputs": 44, "inputs": {"limit": 67}}, {"idx": 1, "outputs": 44, "inputs": {"limit": 89}}, {"idx": 2, "outputs": 10, "inputs": {"limit": 12}}, {"idx": 3, "outputs": 44, "inputs": {"limit": 94}}, {"idx": 4, "outputs": 44, "inputs": {"limit": 96}}, {"idx": 5, "outputs": 10, "inputs": {"limit": 25}}, {"idx": 6, "outputs": 44, "inputs": {"limit": 49}}, {"idx": 7, "outputs": 10, "inputs": {"limit": 8}}, {"idx": 8, "outputs": 10, "inputs": {"limit": 33}}, {"idx": 9, "outputs": 44, "inputs": {"limit": 59}}]