new_contents: # -*- coding: utf-8 -*-
  # online Lunar Calendar: https://wannianrili.51240.com/
  import datetime
  from lunarcalendar._calc import specified_solar_term, annual_solar_terms
  
  
  def test_calc():
      for year in range(1990, 2101):
          annual_solar_terms(year)
          for i in range(0, 24):
              if i < 22:
                  assert specified_solar_term(year, i).year == year
              else:
                  # minor cold(小寒) | major cold(大寒)
                  assert specified_solar_term(year, i).year == year + 1
  
subject: add tests