Interque Question - Fibonacci Code

Fibs

def fibs(n)
  first_fib = 1
  second_fib = 1
  result = [first_fib, second_fib]

  if n < 1
    return "Please enter a valid number, it has to be greater than or equal to 1."
  end

  while second_fib < n
    temp_fib = second_fib
    second_fib += first_fib
    first_fib = temp_fib
    result.push(second_fib)
  end
  return result
end

def test_fib
  test_number = 3
  known_result = [1, 1, 2, 3]
  fibs(test_number) == known_result
end

puts test_fib
puts "*****************"

p fibs(0)
p fibs(75025)