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import pickle
from rdflib.graph import Dataset
from rdflib.namespace import Namespace
def test_issue893_ds_unpickle():
example = Namespace("http://example.com#")
ds1 = Dataset()
one = ds1.graph(example.one)
one.add((example.dan, example.knows, example.lisa))
one.add((example.lisa, example.knows, example.dan))
two = ds1.graph(example.two)
two.add((example.ben, example.knows, example.lisa))
two.add((example.lisa, example.knows, example.ben))
assert set(ds1.quads((None, None, None, None))) == set(
ds1.quads((None, None, None, None))
)
picklestring = pickle.dumps(ds1)
ds2 = pickle.loads(picklestring)
ds1graphs = list(ds1.graphs())
ds2graphs = list(ds2.graphs())
ds1graphs.sort()
ds2graphs.sort()
for new_graph, graph in zip(ds2graphs, ds1graphs):
assert new_graph.identifier == graph.identifier
for new_triple, triple in zip(
new_graph.triples((None, None, None)), graph.triples((None, None, None))
):
assert new_triple in graph.triples((None, None, None))
assert triple in new_graph.triples((None, None, None))
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