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from rdflib.graph import ConjunctiveGraph
def test_turtle_namespace_prefixes():
g = ConjunctiveGraph()
n3 = """
@prefix _9: <http://data.linkedmdb.org/resource/movie/> .
@prefix p_9: <urn:test:> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
p_9:a p_9:b p_9:c .
<http://data.linkedmdb.org/resource/director/1> a
<http://data.linkedmdb.org/resource/movie/director>;
rdfs:label "Cecil B. DeMille (Director)";
_9:director_name "Cecil B. DeMille" ."""
g.parse(data=n3, format="n3")
turtle = g.serialize(format="turtle")
# Check round-tripping, just for kicks.
g = ConjunctiveGraph()
g.parse(data=turtle, format="turtle")
# Shouldn't have got to here
s = g.serialize(format="turtle", encoding="latin-1")
assert b"@prefix _9" not in s
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