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				# Copyright (C) 2022 The Software Heritage developers
				# See the AUTHORS file at the top-level directory of this distribution
				# License: GNU General Public License version 3, or any later version
				# See top-level LICENSE file for more information

				import json
				from pathlib import Path

				from swh.graph.luigi import CompressGraph

				from .test_cli import read_properties

				DATA_DIR = Path(__file__).parents[0] / "dataset"


				def test_compressgraph(tmpdir):
				tmpdir = Path(tmpdir)

				task = CompressGraph(
				local_export_path=DATA_DIR,
				local_graph_path=tmpdir / "compressed_graph",
				batch_size=1000, # go fast on the trivial dataset
				)

				task.run()

				properties = read_properties(tmpdir / "compressed_graph" / "graph.properties")

				assert int(properties["nodes"]) == 21
				assert int(properties["arcs"]) == 23

				export_meta_path = tmpdir / "compressed_graph/meta/export.json"
				assert export_meta_path.read_bytes() == (DATA_DIR / "meta/export.json").read_bytes()

				compression_meta_path = tmpdir / "compressed_graph/meta/compression.json"
				assert json.load(compression_meta_path.open())[0]["conf"] == {"batch_size": 1000}