old_contents: from nose.tools import assert_raises
  from escpos.printer import Dummy
  
  
  def test_line_spacing_code_gen():
      printer = Dummy()
      printer.line_spacing(10)
      assert printer.output == '\x1b3\n'
  
  
  def test_line_spacing_rest():
      printer = Dummy()
      printer.line_spacing()
      assert printer.output == '\x1b2'
  
  
  def test_line_spacing_error_handling():
      printer = Dummy()
      with assert_raises(ValueError):
        printer.line_spacing(99, divisor=44)
      with assert_raises(ValueError):
        printer.line_spacing(divisor=80, spacing=86)
      with assert_raises(ValueError):
        printer.line_spacing(divisor=360, spacing=256)
      with assert_raises(ValueError):
        printer.line_spacing(divisor=180, spacing=256)
new_contents: from nose.tools import assert_raises
  from escpos.printer import Dummy
  
  
  def test_line_spacing_code_gen():
      printer = Dummy()
      printer.line_spacing(10)
      assert printer.output == b'\x1b3\n'
  
  
  def test_line_spacing_rest():
      printer = Dummy()
      printer.line_spacing()
      assert printer.output == b'\x1b2'
  
  
  def test_line_spacing_error_handling():
      printer = Dummy()
      with assert_raises(ValueError):
        printer.line_spacing(99, divisor=44)
      with assert_raises(ValueError):
        printer.line_spacing(divisor=80, spacing=86)
      with assert_raises(ValueError):
        printer.line_spacing(divisor=360, spacing=256)
      with assert_raises(ValueError):
        printer.line_spacing(divisor=180, spacing=256)
subject: Fix broken tests.