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"""
Part of the bsie test suite.
A copy of the license is provided with the project.
Author: Matthias Baumgartner, 2022
"""
# standard imports
import logging
import os
import unittest
# bsie imports
from bsie.utils import bsfs, errors, node, ns
import bsie.extractor.generic.constant
import bsie.extractor.generic.path
import bsie.extractor.generic.stat
import bsie.reader.path
import bsie.reader.stat
# objects to test
from bsie.lib.pipeline import Pipeline
## code ##
class TestPipeline(unittest.TestCase):
def setUp(self):
# constant A
csA = '''
bse:author rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:File ;
rdfs:range xsd:string ;
bsfs:unique "true"^^xsd:boolean .
'''
tupA = [('http://bsfs.ai/schema/Entity#author', 'Me, myself, and I')]
# constant B
csB = '''
bse:rating rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:File ;
rdfs:range xsd:integer ;
bsfs:unique "true"^^xsd:boolean .
'''
tupB = [('http://bsfs.ai/schema/Entity#rating', 123)]
# extractors/readers
self.ext2rdr = {
bsie.extractor.generic.path.Path(): bsie.reader.path.Path(),
bsie.extractor.generic.stat.Stat(): bsie.reader.stat.Stat(),
bsie.extractor.generic.constant.Constant(csA, tupA): None,
bsie.extractor.generic.constant.Constant(csB, tupB): None,
}
self.prefix = bsfs.Namespace('http://example.com/local/')
def test_essentials(self):
pipeline = Pipeline(self.prefix, self.ext2rdr)
self.assertEqual(str(pipeline), 'Pipeline')
self.assertEqual(repr(pipeline), 'Pipeline(...)')
def test_equality(self):
pipeline = Pipeline(self.prefix, self.ext2rdr)
# a pipeline is equivalent to itself
self.assertEqual(pipeline, pipeline)
self.assertEqual(hash(pipeline), hash(pipeline))
# identical builds are equivalent
self.assertEqual(pipeline, Pipeline(self.prefix, self.ext2rdr))
self.assertEqual(hash(pipeline), hash(Pipeline(self.prefix, self.ext2rdr)))
# equivalence respects prefix
self.assertNotEqual(pipeline, Pipeline(bsfs.URI('http://example.com/global/ent#'), self.ext2rdr))
self.assertNotEqual(hash(pipeline), hash(Pipeline(bsfs.URI('http://example.com/global/ent#'), self.ext2rdr)))
# equivalence respects extractors/readers
ext2rdr = {ext: rdr for idx, (ext, rdr) in enumerate(self.ext2rdr.items()) if idx % 2 == 0}
self.assertNotEqual(pipeline, Pipeline(self.prefix, ext2rdr))
self.assertNotEqual(hash(pipeline), hash(Pipeline(self.prefix, ext2rdr)))
# equivalence respects schema
p2 = Pipeline(self.prefix, self.ext2rdr)
p2._schema = bsfs.schema.Schema()
self.assertNotEqual(pipeline, p2)
self.assertNotEqual(hash(pipeline), hash(p2))
# not equal to other types
class Foo(): pass
self.assertNotEqual(pipeline, Foo())
self.assertNotEqual(hash(pipeline), hash(Foo()))
self.assertNotEqual(pipeline, 123)
self.assertNotEqual(hash(pipeline), hash(123))
self.assertNotEqual(pipeline, None)
self.assertNotEqual(hash(pipeline), hash(None))
def test_call(self):
# build pipeline
pipeline = Pipeline(self.prefix, self.ext2rdr)
# build objects for tests
content_hash = 'a948904f2f0f479b8f8197694b30184b0d2ed1c1cd2a1ec0fb85d299a192a447'
subject = node.Node(ns.bsfs.File, (self.prefix + 'file#')[content_hash])
testfile = os.path.join(os.path.dirname(__file__), 'testfile.t')
p_filename = pipeline.schema.predicate(ns.bse.filename)
p_filesize = pipeline.schema.predicate(ns.bse.filesize)
p_author = pipeline.schema.predicate(ns.bse.author)
p_rating = pipeline.schema.predicate(ns.bse.rating)
entity = pipeline.schema.node(ns.bsfs.File)
p_invalid = pipeline.schema.predicate(ns.bsfs.Predicate).child(ns.bse.foo, range=entity)
# extract given predicates
self.assertSetEqual(set(pipeline(testfile, {p_filename, p_filesize})), {
(subject, p_filename, 'testfile.t'),
(subject, p_filesize, 12),
})
self.assertSetEqual(set(pipeline(testfile, {p_author})), {
(subject, p_author, 'Me, myself, and I'),
})
self.assertSetEqual(set(pipeline(testfile, {p_filename})), {
(subject, p_filename, 'testfile.t'),
})
self.assertSetEqual(set(pipeline(testfile, {p_filesize})), {
(subject, p_filesize, 12),
})
# extract all predicates
self.assertSetEqual(set(pipeline(testfile)), {
(subject, p_filename, 'testfile.t'),
(subject, p_filesize, 12),
(subject, p_author, 'Me, myself, and I'),
(subject, p_rating, 123),
})
# invalid predicate
self.assertSetEqual(set(pipeline(testfile, {p_invalid})), set())
# valid/invalid predicates mixed
self.assertSetEqual(set(pipeline(testfile, {p_filename, p_invalid})), {
(subject, p_filename, 'testfile.t'),
})
# invalid path
self.assertRaises(FileNotFoundError, list, pipeline('inexistent_file'))
# FIXME: unreadable file (e.g. permissions error)
def test_call_reader_err(self):
class FaultyReader(bsie.reader.path.Path):
def __call__(self, path):
raise errors.ReaderError('reader error')
pipeline = Pipeline(self.prefix, {bsie.extractor.generic.path.Path(): FaultyReader()})
with self.assertLogs(logging.getLogger('bsie.lib.pipeline'), logging.ERROR):
testfile = os.path.join(os.path.dirname(__file__), 'testfile.t')
p_filename = pipeline.schema.predicate(ns.bse.filename)
self.assertSetEqual(set(pipeline(testfile, {p_filename})), set())
def test_call_extractor_err(self):
class FaultyExtractor(bsie.extractor.generic.path.Path):
def extract(self, subject, content, predicates):
raise errors.ExtractorError('extractor error')
pipeline = Pipeline(self.prefix, {FaultyExtractor(): bsie.reader.path.Path()})
with self.assertLogs(logging.getLogger('bsie.lib.pipeline'), logging.ERROR):
testfile = os.path.join(os.path.dirname(__file__), 'testfile.t')
p_filename = pipeline.schema.predicate(ns.bse.filename)
self.assertSetEqual(set(pipeline(testfile, {p_filename})), set())
def test_predicates(self):
# build pipeline
pipeline = Pipeline(self.prefix, self.ext2rdr)
#
self.assertSetEqual(set(pipeline.principals), {
pipeline.schema.predicate(ns.bse.filename),
pipeline.schema.predicate(ns.bse.filesize),
pipeline.schema.predicate(ns.bse.author),
pipeline.schema.predicate(ns.bse.rating),
})
## main ##
if __name__ == '__main__':
unittest.main()
## EOF ##
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