"""

Part of the bsie test suite.
A copy of the license is provided with the project.
Author: Matthias Baumgartner, 2022
"""
# imports
import os
import unittest

# bsie imports
from bsie.utils import ns
from bsie.utils.node import Node

# objects to test
from bsie.extractor.generic.stat import Stat


## code ##

class TestConstant(unittest.TestCase):
    def test_extract(self):
        node = Node(ns.bsfs.Entity, '') # Blank node
        content = os.stat(__file__)
        ext = Stat()

        # baseline
        self.assertSetEqual(set(ext.extract(node, content, (ns.bse.filesize, ))),
            {(node, ns.bse.filesize, content.st_size)})
        # predicates parameter is respected
        self.assertSetEqual(set(ext.extract(node, content, (ns.bse.filesize, ns.bse.foo))),
            {(node, ns.bse.filesize, content.st_size)})
        self.assertSetEqual(set(ext.extract(node, content, (ns.bse.foo, ))), set())
        # content variations
        self.assertSetEqual(set(ext.extract(node, None, (ns.bse.filesize, ))), set())


## main ##

if __name__ == '__main__':
    unittest.main()

## EOF ##