old_contents: #! /usr/bin/python
  
  from check_dependencies import CheckDependencies
  
  def test_default():
      CheckDependencies(None)
  
  def test_hydrotrend():
      CheckDependencies("hydrotrend")
  
new_contents: #! /usr/bin/python
  
  from check_dependencies import CheckDependencies
  
  def test_default():
      CheckDependencies(None)
  
  def test_hydrotrend():
      CheckDependencies("hydrotrend")
  
  def test_cem():
      CheckDependencies("cem")
  
subject: Add dependency check test for CEM