annotate planemo/lib/python3.7/site-packages/prov/tests/utility.py @ 1:56ad4e20f292 draft

"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 from __future__ import (absolute_import, division, print_function,
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2 unicode_literals)
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3
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4 import io
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5 import logging
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6 import unittest
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7
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8 from prov.model import ProvDocument
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9
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11 logger = logging.getLogger(__name__)
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14 class DocumentBaseTestCase(unittest.TestCase):
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15 def do_tests(self, prov_doc, msg=None):
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16 pass
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19 class RoundTripTestCase(DocumentBaseTestCase):
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20 """A serializer test should subclass this class and set the class property
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21 FORMAT to the correct value (e.g. 'json', 'xml', 'rdf').
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22 """
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23 FORMAT = None # a subclass should change this
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25 def do_tests(self, prov_doc, msg=None):
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26 self.assertRoundTripEquivalence(prov_doc, msg)
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28 def assertRoundTripEquivalence(self, prov_doc, msg=None):
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29 if self.FORMAT is None:
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30 # This is a dummy test, just return
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31 return
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33 with io.BytesIO() as stream:
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34 prov_doc.serialize(destination=stream, format=self.FORMAT, indent=4)
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35 stream.seek(0, 0)
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37 prov_doc_new = ProvDocument.deserialize(source=stream,
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38 format=self.FORMAT)
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39 stream.seek(0, 0)
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40 # Assume UTF-8 encoding which is forced by the particular
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41 # PROV XML implementation and should also work for the PROV
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42 # JSON implementation.
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43 msg_extra = u"'%s' serialization content:\n%s" % (
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44 self.FORMAT, stream.read().decode("utf-8"))
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45 msg = u'\n'.join((msg, msg_extra)) if msg else msg_extra
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46 self.assertEqual(prov_doc, prov_doc_new, msg)