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import unittest
import rdflib
import re
from rdflib.py3compat import b
class TestTrig(unittest.TestCase):
def testEmpty(self):
g=rdflib.Graph()
s=g.serialize(format='trig')
self.assertTrue(s is not None)
def testRepeatTriples(self):
g=rdflib.ConjunctiveGraph()
g.get_context('urn:a').add(( rdflib.URIRef('urn:1'),
rdflib.URIRef('urn:2'),
rdflib.URIRef('urn:3') ))
g.get_context('urn:b').add(( rdflib.URIRef('urn:1'),
rdflib.URIRef('urn:2'),
rdflib.URIRef('urn:3') ))
self.assertEqual(len(g.get_context('urn:a')),1)
self.assertEqual(len(g.get_context('urn:b')),1)
s=g.serialize(format='trig')
self.assert_(b('{}') not in s) # no empty graphs!
def testSameSubject(self):
g=rdflib.ConjunctiveGraph()
g.get_context('urn:a').add(( rdflib.URIRef('urn:1'),
rdflib.URIRef('urn:p1'),
rdflib.URIRef('urn:o1') ))
g.get_context('urn:b').add(( rdflib.URIRef('urn:1'),
rdflib.URIRef('urn:p2'),
rdflib.URIRef('urn:o2') ))
self.assertEqual(len(g.get_context('urn:a')),1)
self.assertEqual(len(g.get_context('urn:b')),1)
s=g.serialize(format='trig')
self.assertEqual(len(re.findall(b("p1"), s)), 1)
self.assertEqual(len(re.findall(b("p2"), s)), 1)
self.assert_(b('{}') not in s) # no empty graphs!
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