old_contents: from pymonet.box import Box
  
  
  def test_eq_should_compare_only_box_value():
      assert Box(42) == Box(42)
      assert Box(43) != Box(42)
      assert Box([]) == Box([])
      assert Box({}) == Box({})
      assert Box(None) == Box(None)
  
  
  def test_map_should_return_box_with_mapped_value():
      box = Box(42)
      assert box.map(lambda value: value + 1) == Box(43)
  
  
  def test_map_should_return_new_instance_of_box():
      box = Box(42)
      mapped_box = box.map(lambda value: value + 1)
      assert box is not mapped_box
  
  
  def test_fold_should_return_result_of_fold_function_called_with_box_value():
      box = Box(42)
      assert box.fold(lambda value: value + 1) == 43
  
new_contents: from pymonet.box import Box
  
  
  def test_eq_should_compare_only_box_value():
      assert Box(42) == Box(42)
      assert Box(43) != Box(42)
      assert Box([]) == Box([])
      assert Box({}) == Box({})
      assert Box(None) == Box(None)
  
  
  def test_map_should_return_box_with_mapped_value():
      box = Box(42)
      assert box.map(lambda value: value + 1) == Box(43)
  
  
  def test_map_should_return_new_instance_of_box():
      box = Box(42)
      mapped_box = box.map(lambda value: value + 1)
      assert box is not mapped_box
  
  
  def test_fold_should_return_result_of_fold_function_called_with_box_value():
      box = Box(42)
      assert box.fold(lambda value: value + 1) == 43
  
  
  def test_ap_should_return_result_of_function_in_box():
  
      box = Box(42)
      assert (box.app(
          Box(lambda value: value + 1)
      )) == Box(43)
  
subject: add unit test for box:ap #tddBitch