new_contents: 
  from fastats.core.decorator import fs
  
  
  def square(x):
      return x * x
  
  @fs
  def cube(x):
      return x * x * x
  
  @fs
  def func(x):
      a = square(x)
      return a / 2
  
  
  def test_fs_decorated_functions_as_kwargs_to_another():
      assert square(2) == 4.0
      assert square(3) == 9.0
      assert cube(3) == 27.0
      assert cube(4) == 64.0
  
      assert func(6) == 18.0
      assert func(4) == 8.0
  
      assert func(6, square=cube) == 108.0
      assert func(4, square=cube) == 32.0
  
  
  if __name__ == '__main__':
      import pytest
      pytest.main([__file__])
  
subject: Add test for decorated kwargs to decorated function