old_contents: from pytest import fixture
  
  from welly import Well
  
  
  @fixture()
  def well():
      return Well.from_las('tests/assets/P-129_out.LAS')
  
new_contents: from pytest import fixture
  
  from welly import Project
  
  
  @fixture()
  def project():
      return Project.from_las('tests/assets/P-129_out.LAS')
  
  
  @fixture()
  def well(project):
      return project[0]
  
  
  @fixture()
  def curve(well):
      return well.data['GR']
  
subject: add project and curve to conftest.py