new_contents: from numpy.testing import run_module_suite, assert_equal
  import scipy.constants as sc
  
  def test_fahrenheit_to_celcius():
      assert_equal(sc.F2C(32), 0)
      assert_equal(sc.F2C([32, 32]), [0, 0])
  
  def test_celcius_to_kelvin():
      assert_equal(sc.C2K([0, 0]), [273.15, 273.15])
  
  def test_kelvin_to_celcius():
      assert_equal(sc.K2C([0, 0]), [-273.15, -273.15])
  
  def test_fahrenheit_to_kelvin():
      assert_equal(sc.F2K([32, 32]), [273.15, 273.15])
  
  def test_kelvin_to_fahrenheit():
      assert_equal(sc.K2F([273.15, 273.15]), [32, 32])
  
  def test_celcius_to_fahrenheit():
      assert_equal(sc.C2F([0, 0]), [32, 32])
  
  def test_lambda_to_nu():
      assert_equal(sc.lambda2nu(sc.speed_of_light), 1)
  
  def test_nu_to_lambda():
      assert_equal(sc.nu2lambda(1), sc.speed_of_light)
  
  if __name__ == "__main__":
      run_module_suite()
  
subject: Add basic tests for constants.