old_contents: from immobilus import immobilus
  from immobilus.logic import _datetime_to_utc_timestamp
  
  from datetime import datetime
  from time import time
  
  
  def test_time_function():
  
      dt = datetime(1970, 1, 1)
      assert _datetime_to_utc_timestamp(dt) == 0.0
      assert type(_datetime_to_utc_timestamp(dt)) is float
      assert time() != _datetime_to_utc_timestamp(dt)
  
      with immobilus(dt):
          assert time() == _datetime_to_utc_timestamp(dt)
  
      assert time() != _datetime_to_utc_timestamp(dt)
  
new_contents: from immobilus import immobilus
  from immobilus.logic import _datetime_to_utc_timestamp
  
  from datetime import datetime
  from time import time
  
  
  def test_time_function():
  
      dt = datetime(1970, 1, 1)
      timestamp = _datetime_to_utc_timestamp(dt)
      assert timestamp == 0.0
      assert type(timestamp) is float
      assert time() != timestamp
  
      with immobilus(dt):
          assert time() == timestamp
  
      assert time() != timestamp
  
subject: Tidy test - reuse timestamp