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 | #!/usr/bin/python3-dbg
# -*- coding: utf-8 -*-
# Tests validant le bon calcul d'empreintes.
from chrysacase import ChrysalideTestCase
from pychrysalide.analysis.contents import FileContent, RestrictedContent
from pychrysalide.arch import vmpa, mrange
import hashlib
import tempfile
class TestRestrictedContent(ChrysalideTestCase):
    """TestCase for analysis.contents.RestrictedContent."""
    @classmethod
    def setUpClass(cls):
        super(TestRestrictedContent, cls).setUpClass()
        cls._out = tempfile.NamedTemporaryFile()
        cls._out.write(b'AAAABBBBCCCCDDDD')
        cls._out.flush()
        cls.log('Using temporary file "%s"' % cls._out.name)
    @classmethod
    def tearDownClass(cls):
        super(TestRestrictedContent, cls).tearDownClass()
        cls.log('Delete file "%s"' % cls._out.name)
        cls._out.close()
    def testFullChecksum(self):
        """Check checksum of full content."""
        fcnt = FileContent(self._out.name)
        self.assertIsNotNone(fcnt)
        expected = hashlib.sha256(b'AAAABBBBCCCCDDDD').hexdigest()
        self.assertEqual(fcnt.checksum, expected)
    def testPartialChecksum(self):
        """Check checksum of restricted content."""
        fcnt = FileContent(self._out.name)
        self.assertIsNotNone(fcnt)
        start = vmpa(4, vmpa.VmpaSpecialValue.NO_VIRTUAL)
        covered = mrange(start, 4) # 'BBBB'
        rcnt = RestrictedContent(fcnt, covered)
        self.assertIsNotNone(rcnt)
        expected = hashlib.sha256(b'BBBB').hexdigest()
        self.assertEqual(rcnt.checksum, expected)
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