def test_roundtrip():
d = Dataset()
d.parse(Path(__file__).parent / "test_parser_hext_multigraph.ndjson",
format="hext",
publicID=d.default_context.identifier)
d.default_union = True
with open(str(
Path(__file__).parent /
"test_parser_hext_multigraph.ndjson")) as i:
ordered_input = "".join(sorted(i.readlines())).strip()
ordered_output = "\n".join(sorted(
d.serialize(format="hext").split("\n"))).strip()
assert ordered_output == ordered_input
# Query the union of all graphs in the dataset for all triples
# we should get Nothing:
"""
"""
# A Dataset's default union graph does not exist by default (default_union property is False)
print("Attempt #1 to print all triples in the Dataset:")
print("---")
for triple in d.triples((None, None, None, None)):
print(triple)
print("---")
print()
print()
# Set the Dataset's default_union property to True and re-query
d.default_union = True
print("Attempt #2 to print all triples in the Dataset:")
print("---")
for triple in d.triples((None, None, None, None)):
print(triple)
print("---")
print()
print()
#
# Remove
#
# Remove Graph graph_1 from the Dataset
d.remove_graph(graph_1)
