text: import pytest
  from airpress.compressor import PKPass
  
  
  def test_should_initialize_pkpass_without_assets():
      pkpass = PKPass()
      assert pkpass
  
  
  def test_should_initialize_pkpass_with_assets():
      pkpass = PKPass(
          ('icon.png', b'00001111'),
          ('pass.json', b'11110000'),
      )
      assert pkpass['icon.png']
      assert pkpass['pass.json']
  
  
  def test_should_raise_type_error_during_initialization_with_assets_of_wrong_type():
      with pytest.raises(TypeError):
          _ = PKPass(
              ('pass.json', object())
          )
  
  
  def test_should_raise_assertion_error_during_initialization_with_unsupported_asset():
      with pytest.raises(AssertionError):
          _ = PKPass(
              ('unknown.doc', b'11001100')
          )
  
  
  def test_should_explicitly_initialize_pkpass_with_unsupported_asset():
      pkpass = PKPass(
          ('unknown.doc', b'11001100'),
          validate=False
      )
      assert pkpass['unknown.doc']
  