27 lines
769 B
Python
27 lines
769 B
Python
#!/usr/bin/python
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"""verifies that the metaclass abc is properly used by ESC/POS
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:author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
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:organization: `python-escpos <https://github.com/python-escpos>`_
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:copyright: Copyright (c) 2016 Patrick Kanzler
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:license: MIT
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"""
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from nose.tools import raises
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import escpos.escpos as escpos
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from abc import ABCMeta
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@raises(TypeError)
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def test_abstract_base_class_raises():
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"""test whether the abstract base class raises an exception for ESC/POS"""
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escpos.Escpos() # This call should raise TypeError because of abstractmethod _raw()
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def test_abstract_base_class():
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""" test whether Escpos has the metaclass ABCMeta """
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assert issubclass(escpos.Escpos, object)
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assert type(escpos.Escpos) is ABCMeta
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