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# coding=utf-8
# test for https://github.com/RDFLib/rdflib/issues/446
from rdflib import Graph, URIRef, Literal
def test_sparql_unicode():
g = Graph()
trip = (
URIRef("http://example.org/foo"),
URIRef("http://example.org/bar"),
URIRef("http://example.org/jörn"),
)
g.add(trip)
q = 'select ?s ?p ?o where { ?s ?p ?o . FILTER(lang(?o) = "") }'
r = list(g.query(q))
assert r == [], "sparql query %r should return nothing but returns %r" % (q, r)
if __name__ == "__main__":
test_sparql_unicode()
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