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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for the data range file-like object."""
from __future__ import unicode_literals
import unittest
from dfvfs.file_io import data_range_io
from dfvfs.file_io import os_file_io
from dfvfs.path import data_range_path_spec
from dfvfs.path import os_path_spec
from dfvfs.resolver import context
from tests import test_lib as shared_test_lib
from tests.file_io import test_lib
@shared_test_lib.skipUnlessHasTestFile(['syslog'])
class DataRangeTest(test_lib.SylogTestCase):
"""The unit test for the data range file-like object."""
def setUp(self):
"""Sets up the needed objects used throughout the test."""
self._resolver_context = context.Context()
test_file = self._GetTestFilePath(['syslog'])
self._os_path_spec = os_path_spec.OSPathSpec(location=test_file)
self._data_range_path_spec = data_range_path_spec.DataRangePathSpec(
range_offset=167, range_size=1080, parent=self._os_path_spec)
def testOpenCloseFileObject(self):
"""Test the open and close functionality using a file-like object."""
os_file_object = os_file_io.OSFile(self._resolver_context)
os_file_object.open(path_spec=self._os_path_spec)
file_object = data_range_io.DataRange(
self._resolver_context, file_object=os_file_object)
file_object.open()
self._TestGetSizeFileObject(file_object)
file_object.close()
os_file_object.close()
def testSetRange(self):
"""Test the set data range functionality."""
os_file_object = os_file_io.OSFile(self._resolver_context)
os_file_object.open(path_spec=self._os_path_spec)
file_object = data_range_io.DataRange(
self._resolver_context, file_object=os_file_object)
file_object.SetRange(167, 1080)
file_object.open()
self.assertEqual(file_object.get_size(), 1080)
file_object.close()
os_file_object.close()
# TODO: add some edge case testing here.
def testOpenClosePathSpec(self):
"""Test the open and close functionality using a path specification."""
file_object = data_range_io.DataRange(self._resolver_context)
file_object.open(path_spec=self._data_range_path_spec)
self.assertEqual(file_object.get_size(), 1080)
file_object.close()
def testSeek(self):
"""Test the seek functionality."""
file_object = data_range_io.DataRange(self._resolver_context)
file_object.open(path_spec=self._data_range_path_spec)
self._TestSeekFileObject(file_object, base_offset=0)
file_object.close()
def testRead(self):
"""Test the read functionality."""
file_object = data_range_io.DataRange(self._resolver_context)
file_object.open(path_spec=self._data_range_path_spec)
self._TestReadFileObject(file_object, base_offset=0)
file_object.close()
if __name__ == '__main__':
unittest.main()
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