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	# Copyright (C) 2015-2018 The Software Heritage developers
	# See the AUTHORS file at the top-level directory of this distribution
	# License: GNU Affero General Public License version 3, or any later version
	# See top-level LICENSE file for more information

	import shutil
	from subprocess import run, PIPE

	from django.core.cache import cache
	from hypothesis.extra.django import TestCase

	from swh.model.hashutil import hash_to_bytes
	from swh.web import config
	from swh.web.common import converters, service
	from swh.web.tests.data import get_tests_data


	ctags_json_missing = \
	shutil.which('ctags') is None or \
	b'+json' not in run(['ctags', '--version'], stdout=PIPE).stdout

	fossology_missing = shutil.which('nomossa') is None


	class WebTestCase(TestCase):
	"""Base TestCase class for swh-web.

	It is initialized with references to in-memory storages containing
	raw tests data.

	It also defines class methods to retrieve those tests data in
	a json serializable format in order to ease tests implementation.

	"""
	@classmethod
	def setUpClass(cls):
	super().setUpClass()
	tests_data = get_tests_data()
	cls.storage = tests_data['storage']
	cls.idx_storage = tests_data['idx_storage']
	cls.mimetype_indexer = tests_data['mimetype_indexer']
	cls.language_indexer = tests_data['language_indexer']
	cls.license_indexer = tests_data['license_indexer']
	cls.ctags_indexer = tests_data['ctags_indexer']

	# Update swh-web configuration to use the in-memory storage
	# instantiated in the tests.data module
	swh_config = config.get_config()
	swh_config.update({'storage': cls.storage})
	service.storage = cls.storage

	# Update swh-web configuration to use the in-memory indexer storage
	# instantiated in the tests.data modules
	swh_config.update({'indexer_storage': cls.idx_storage})
	service.idx_storage = cls.idx_storage

	@classmethod
	def content_add_mimetype(cls, cnt_id):
	cls.mimetype_indexer.run([hash_to_bytes(cnt_id)],
	'update-dups')

	@classmethod
	def content_get_mimetype(cls, cnt_id):
	mimetype = next(cls.idx_storage.content_mimetype_get(
	[hash_to_bytes(cnt_id)]))
	return converters.from_filetype(mimetype)

	@classmethod
	def content_add_language(cls, cnt_id):
	cls.language_indexer.run([hash_to_bytes(cnt_id)],
	'update-dups')

	@classmethod
	def content_get_language(cls, cnt_id):
	lang = next(cls.idx_storage.content_language_get(
	[hash_to_bytes(cnt_id)]))
	return converters.from_swh(lang, hashess={'id'})

	@classmethod
	def content_add_license(cls, cnt_id):
	cls.license_indexer.run([hash_to_bytes(cnt_id)],
	'update-dups')

	@classmethod
	def content_get_license(cls, cnt_id):
	cnt_id_bytes = hash_to_bytes(cnt_id)
	lic = next(cls.idx_storage.content_fossology_license_get(
	[cnt_id_bytes]))
	return converters.from_swh({'id': cnt_id_bytes,
	'facts': lic[cnt_id_bytes]},
	hashess={'id'})

	@classmethod
	def content_add_ctags(cls, cnt_id):
	cls.ctags_indexer.run([hash_to_bytes(cnt_id)],
	'update-dups')

	@classmethod
	def content_get_ctags(cls, cnt_id):
	cnt_id_bytes = hash_to_bytes(cnt_id)
	ctags = cls.idx_storage.content_ctags_get([cnt_id_bytes])
	for ctag in ctags:
	yield converters.from_swh(ctag, hashess={'id'})

	@classmethod
	def content_get_metadata(cls, cnt_id):
	cnt_id_bytes = hash_to_bytes(cnt_id)
	metadata = next(cls.storage.content_get_metadata([cnt_id_bytes]))
	return converters.from_swh(metadata,
	hashess={'sha1', 'sha1_git', 'sha256',
	'blake2s256'})

	@classmethod
	def content_get(cls, cnt_id):
	cnt_id_bytes = hash_to_bytes(cnt_id)
	cnt = next(cls.storage.content_get([cnt_id_bytes]))
	return converters.from_content(cnt)

	@classmethod
	def directory_ls(cls, dir_id):
	cnt_id_bytes = hash_to_bytes(dir_id)
	dir_content = map(converters.from_directory_entry,
	cls.storage.directory_ls(cnt_id_bytes))
	return list(dir_content)

	@classmethod
	def release_get(cls, rel_id):
	rel_id_bytes = hash_to_bytes(rel_id)
	rel_data = next(cls.storage.release_get([rel_id_bytes]))
	return converters.from_release(rel_data)

	@classmethod
	def revision_get(cls, rev_id):
	rev_id_bytes = hash_to_bytes(rev_id)
	rev_data = next(cls.storage.revision_get([rev_id_bytes]))
	return converters.from_revision(rev_data)

	@classmethod
	def revision_log(cls, rev_id, limit=None):
	rev_id_bytes = hash_to_bytes(rev_id)
	return list(map(converters.from_revision,
	cls.storage.revision_log([rev_id_bytes], limit=limit)))

	@classmethod
	def snapshot_get_latest(cls, origin_id):
	snp = cls.storage.snapshot_get_latest(origin_id)
	return converters.from_snapshot(snp)

	@classmethod
	def origin_get(cls, origin_info):
	origin = cls.storage.origin_get(origin_info)
	return converters.from_origin(origin)

	@classmethod
	def origin_visit_get(cls, origin_id):
	visits = cls.storage.origin_visit_get(origin_id)
	return list(map(converters.from_origin_visit, visits))

	@classmethod
	def origin_visit_get_by(cls, origin_id, visit_id):
	visit = cls.storage.origin_visit_get_by(origin_id, visit_id)
	return converters.from_origin_visit(visit)

	@classmethod
	def snapshot_get(cls, snapshot_id):
	snp = cls.storage.snapshot_get(hash_to_bytes(snapshot_id))
	return converters.from_snapshot(snp)

	@classmethod
	def snapshot_get_branches(cls, snapshot_id, branches_from='',
	branches_count=1000, target_types=None):
	snp = cls.storage.snapshot_get_branches(hash_to_bytes(snapshot_id),
	branches_from.encode(),
	branches_count, target_types)
	return converters.from_snapshot(snp)

	@classmethod
	def person_get(cls, person_id):
	person = next(cls.storage.person_get([person_id]))
	return converters.from_person(person)

	def setUp(self):
	cache.clear()

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