new_contents: import steel
  import unittest
  
  
  class FieldTests(unittest.TestCase):
      def test_auto_label(self):
          # One word
          field = steel.Bytes(size=1)
          field.set_name('byte')
          self.assertEqual(field.label, 'byte')
  
          # Two words
          field = steel.Bytes(size=1)
          field.set_name('two_bytes')
          self.assertEqual(field.label, 'two bytes')
  
      def test_manual_label(self):
          field = steel.Bytes(size=1, label='explicit')
          field.set_name('field')
          self.assertEqual(field.label, 'explicit')
  
subject: Add tests for label management