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from rdflib import Graph, URIRef, Literal, BNode
from rdflib.plugins.sparql import prepareQuery
from rdflib.compare import isomorphic
import unittest
from nose.tools import eq_
class TestConstructInitBindings(unittest.TestCase):
def test_construct_init_bindings(self):
"""
This is issue https://github.com/RDFLib/rdflib/issues/1001
"""
g1 = Graph()
q_str = ("""
PREFIX : <urn:ns1:>
CONSTRUCT {
?uri :prop1 ?val1;
:prop2 ?c .
}
WHERE {
bind(uri(concat("urn:ns1:", ?a)) as ?uri)
bind(?b as ?val1)
}
""")
q_prepared = prepareQuery(q_str)
expected = [
(URIRef('urn:ns1:A'),URIRef('urn:ns1:prop1'), Literal('B')),
(URIRef('urn:ns1:A'),URIRef('urn:ns1:prop2'), Literal('C'))
]
results = g1.query(q_prepared, initBindings={
'a': Literal('A'),
'b': Literal('B'),
'c': Literal('C')
})
eq_(sorted(results, key=lambda x: str(x[1])), expected)
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