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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for the file-like object implementation using the SleuthKit (TSK)."""
from __future__ import unicode_literals
import os
import unittest
from dfvfs.file_io import tsk_file_io
from dfvfs.path import os_path_spec
from dfvfs.path import qcow_path_spec
from dfvfs.path import tsk_path_spec
from tests import test_lib as shared_test_lib
from tests.file_io import test_lib
@shared_test_lib.skipUnlessHasTestFile(['ímynd.dd'])
class TSKFileTest(test_lib.ImageFileTestCase):
"""The unit test for the SleuthKit (TSK) file-like object."""
def setUp(self):
"""Sets up the needed objects used throughout the test."""
super(TSKFileTest, self).setUp()
test_file = self._GetTestFilePath(['ímynd.dd'])
self._os_path_spec = os_path_spec.OSPathSpec(location=test_file)
def testOpenCloseInode(self):
"""Test the open and close functionality using an inode."""
self._TestOpenCloseInode(self._os_path_spec)
def testOpenCloseLocation(self):
"""Test the open and close functionality using a location."""
self._TestOpenCloseLocation(self._os_path_spec)
def testSeek(self):
"""Test the seek functionality."""
self._TestSeek(self._os_path_spec)
def testRead(self):
"""Test the read functionality."""
self._TestRead(self._os_path_spec)
def testReadADS(self):
"""Test the read functionality on an alternate data stream (ADS)."""
test_file = self._GetTestFilePath(['vsstest.qcow2'])
path_spec = os_path_spec.OSPathSpec(location=test_file)
path_spec = qcow_path_spec.QCOWPathSpec(parent=path_spec)
path_spec = tsk_path_spec.TSKPathSpec(
data_stream='$SDS', inode=9, location='\\$Secure', parent=path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context)
file_object.open(path_spec=path_spec)
expected_buffer = (
b'H\n\x80\xb9\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
read_buffer = file_object.read(size=16)
self.assertEqual(read_buffer, expected_buffer)
file_object.seek(0x00040000, os.SEEK_SET)
read_buffer = file_object.read(size=16)
self.assertEqual(read_buffer, expected_buffer)
file_object.seek(0x000401a0, os.SEEK_SET)
expected_buffer = (
b'\xc3\xb4\xb1\x34\x03\x01\x00\x00\xa0\x01\x00\x00\x00\x00\x00\x00')
read_buffer = file_object.read(size=16)
self.assertEqual(read_buffer, expected_buffer)
if __name__ == '__main__':
unittest.main()
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