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import os
import unittest
from test import TEST_DIR
from rdflib import ConjunctiveGraph, Namespace, URIRef
TEST_BASE = "test/nquads.rdflib"
class NQuadsParserTest(unittest.TestCase):
def _load_example(self):
g = ConjunctiveGraph()
nq_path = os.path.relpath(
os.path.join(TEST_DIR, "nquads.rdflib/example.nquads"), os.curdir
)
with open(nq_path, "rb") as data:
g.parse(data, format="nquads")
return g
def test_01_simple_open(self):
g = self._load_example()
assert len(g.store) == 449
def test_02_contexts(self):
# There should be 16 separate contexts
g = self._load_example()
assert len([x for x in g.store.contexts()]) == 16
def test_03_get_value(self):
# is the name of entity E10009 "Arco Publications"?
# (in graph http://bibliographica.org/entity/E10009)
# Looking for:
# <http://bibliographica.org/entity/E10009>
# <http://xmlns.com/foaf/0.1/name>
# "Arco Publications"
# <http://bibliographica.org/entity/E10009>
g = self._load_example()
s = URIRef("http://bibliographica.org/entity/E10009")
FOAF = Namespace("http://xmlns.com/foaf/0.1/")
self.assertTrue(g.value(s, FOAF.name).eq("Arco Publications"))
def test_context_is_optional(self):
g = ConjunctiveGraph()
nq_path = os.path.relpath(
os.path.join(TEST_DIR, "nquads.rdflib/test6.nq"), os.curdir
)
with open(nq_path, "rb") as data:
g.parse(data, format="nquads")
assert len(g) > 0
def test_serialize(self):
g = ConjunctiveGraph()
uri1 = URIRef("http://example.org/mygraph1")
uri2 = URIRef("http://example.org/mygraph2")
bob = URIRef("urn:example:bob")
likes = URIRef("urn:example:likes")
pizza = URIRef("urn:example:pizza")
g.get_context(uri1).add((bob, likes, pizza))
g.get_context(uri2).add((bob, likes, pizza))
s = g.serialize(format="nquads", encoding="utf-8")
self.assertEqual(len([x for x in s.split(b"\n") if x.strip()]), 2)
g2 = ConjunctiveGraph()
g2.parse(data=s, format="nquads")
self.assertEqual(len(g), len(g2))
self.assertEqual(
sorted(x.identifier for x in g.contexts()),
sorted(x.identifier for x in g2.contexts()),
)
class BnodeContextTest(unittest.TestCase):
def setUp(self):
self.data = open("test/nquads.rdflib/bnode_context.nquads", "rb")
self.data_obnodes = open(
"test/nquads.rdflib/bnode_context_obj_bnodes.nquads", "rb"
)
def tearDown(self):
self.data.close()
def test_parse_shared_bnode_context(self):
bnode_ctx = dict()
g = ConjunctiveGraph()
h = ConjunctiveGraph()
g.parse(self.data, format="nquads", bnode_context=bnode_ctx)
self.data.seek(0)
h.parse(self.data, format="nquads", bnode_context=bnode_ctx)
self.assertEqual(set(h.subjects()), set(g.subjects()))
def test_parse_shared_bnode_context_same_graph(self):
bnode_ctx = dict()
g = ConjunctiveGraph()
g.parse(self.data_obnodes, format="nquads", bnode_context=bnode_ctx)
o1 = set(g.objects())
self.data_obnodes.seek(0)
g.parse(self.data_obnodes, format="nquads", bnode_context=bnode_ctx)
o2 = set(g.objects())
self.assertEqual(o1, o2)
def test_parse_distinct_bnode_context(self):
g = ConjunctiveGraph()
g.parse(self.data, format="nquads", bnode_context=dict())
s1 = set(g.subjects())
self.data.seek(0)
g.parse(self.data, format="nquads", bnode_context=dict())
s2 = set(g.subjects())
self.assertNotEqual(set(), s2 - s1)
def test_parse_distinct_bnode_contexts_between_graphs(self):
g = ConjunctiveGraph()
h = ConjunctiveGraph()
g.parse(self.data, format="nquads")
s1 = set(g.subjects())
self.data.seek(0)
h.parse(self.data, format="nquads")
s2 = set(h.subjects())
self.assertNotEqual(s1, s2)
def test_parse_distinct_bnode_contexts_named_graphs(self):
g = ConjunctiveGraph()
h = ConjunctiveGraph()
g.parse(self.data, format="nquads")
self.data.seek(0)
h.parse(self.data, format="nquads")
self.assertNotEqual(set(h.contexts()), set(g.contexts()))
def test_parse_shared_bnode_contexts_named_graphs(self):
bnode_ctx = dict()
g = ConjunctiveGraph()
h = ConjunctiveGraph()
g.parse(self.data, format="nquads", bnode_context=bnode_ctx)
self.data.seek(0)
h.parse(self.data, format="nquads", bnode_context=bnode_ctx)
self.assertEqual(set(h.contexts()), set(g.contexts()))
if __name__ == "__main__":
unittest.main()
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