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# standard imports
import os
import unittest
# bsie imports
from bsie.extractor import base
from bsie.utils import bsfs, node as _node, ns
# objects to test
from bsie.extractor.generic.stat import Stat
## code ##
class TestStat(unittest.TestCase):
def test_eq(self):
# distinct instances, same data
self.assertEqual(Stat(), Stat())
# different classes
class Foo(): pass
self.assertNotEqual(Stat(), Foo())
self.assertNotEqual(Stat(), 123)
self.assertNotEqual(Stat(), None)
def test_schema(self):
self.assertEqual(Stat().schema,
bsfs.schema.from_string(base.SCHEMA_PREAMBLE + '''
bse:filesize rdfs:subClassOf bsfs:Predicate ;
rdfs:domain bsfs:File ;
rdfs:range xsd:integer ;
bsfs:unique "true"^^xsd:boolean .
'''))
def test_extract(self):
ext = Stat()
node = _node.Node(ns.bsfs.File, '') # Blank node
content = os.stat(__file__)
p_filesize = ext.schema.predicate(ns.bse.filesize)
entity = ext.schema.node(ns.bsfs.Node).child(ns.bsfs.Entity)
string = ext.schema.literal(ns.bsfs.Literal).child(ns.xsd.string)
# baseline
self.assertSetEqual(set(ext.extract(node, content, (p_filesize, ))),
{(node, p_filesize, content.st_size)})
# predicates parameter is respected
p_foo = ext.schema.predicate(ns.bsfs.Predicate).child(ns.bse.foo, domain=entity, range=string) # unsupported predicate
self.assertSetEqual(set(ext.extract(node, content, (p_filesize, p_foo))),
{(node, p_filesize, content.st_size)})
self.assertSetEqual(set(ext.extract(node, content, (p_foo, ))), set())
# predicates are validated
p_bar = p_foo.child(ns.bse.filesizse) # same URI but different hierarchy
self.assertSetEqual(set(ext.extract(node, content, (p_filesize, p_bar))),
{(node, p_filesize, content.st_size)})
self.assertSetEqual(set(ext.extract(node, content, (p_bar, ))), set())
# content variations
self.assertSetEqual(set(ext.extract(node, os.stat_result([12345] * len(content)), (p_filesize, p_bar))),
{(node, p_filesize, 12345)})
# errors are suppressed
self.assertSetEqual(set(ext.extract(node, None, (p_filesize, ))), set())
## main ##
if __name__ == '__main__':
unittest.main()
## EOF ##
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