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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Tests for the binary line reader file-like object."""
from __future__ import unicode_literals
import unittest
from dfvfs.file_io import os_file_io
from dfvfs.path import os_path_spec
from dfvfs.resolver import context
from plaso.lib import line_reader_file
from tests import test_lib as shared_test_lib
class BinaryLineReaderTest(shared_test_lib.BaseTestCase):
"""Tests for the binary line reader."""
def setUp(self):
"""Sets up the needed objects used throughout the test."""
self._resolver_context = context.Context()
def testReadline(self):
"""Test the readline() function."""
test_file_path = self._GetTestFilePath(['another_file'])
self._SkipIfPathNotExists(test_file_path)
test_path_spec = os_path_spec.OSPathSpec(location=test_file_path)
file_object = os_file_io.OSFile(self._resolver_context)
file_object.open(test_path_spec)
line_reader = line_reader_file.BinaryLineReader(file_object)
line = line_reader.readline()
self.assertEqual(line, b'This is another file.\n')
offset = line_reader.tell()
self.assertEqual(offset, 22)
line_reader = line_reader_file.BinaryLineReader(file_object)
line = line_reader.readline(size=11)
self.assertEqual(line, b'This is ano')
offset = line_reader.tell()
self.assertEqual(offset, 11)
file_object.close()
def testReadlineMultipleLines(self):
"""Test the readline() function on multiple lines."""
test_file_path = self._GetTestFilePath(['password.csv'])
self._SkipIfPathNotExists(test_file_path)
test_path_spec = os_path_spec.OSPathSpec(location=test_file_path)
file_object = os_file_io.OSFile(self._resolver_context)
file_object.open(test_path_spec)
line_reader = line_reader_file.BinaryLineReader(file_object)
line = line_reader.readline()
self.assertEqual(line, b'place,user,password\n')
offset = line_reader.tell()
self.assertEqual(offset, 20)
line = line_reader.readline(size=5)
self.assertEqual(line, b'bank,')
offset = line_reader.tell()
self.assertEqual(offset, 25)
line = line_reader.readline()
self.assertEqual(line, b'joesmith,superrich\n')
offset = line_reader.tell()
self.assertEqual(offset, 44)
line = line_reader.readline()
self.assertEqual(line, b'alarm system,-,1234\n')
offset = line_reader.tell()
self.assertEqual(offset, 64)
file_object.close()
def testReadlines(self):
"""Test the readlines() function."""
test_file_path = self._GetTestFilePath(['password.csv'])
self._SkipIfPathNotExists(test_file_path)
test_path_spec = os_path_spec.OSPathSpec(location=test_file_path)
file_object = os_file_io.OSFile(self._resolver_context)
file_object.open(test_path_spec)
line_reader = line_reader_file.BinaryLineReader(file_object)
lines = line_reader.readlines()
self.assertEqual(len(lines), 5)
self.assertEqual(lines[0], b'place,user,password\n')
self.assertEqual(lines[1], b'bank,joesmith,superrich\n')
self.assertEqual(lines[2], b'alarm system,-,1234\n')
self.assertEqual(lines[3], b'treasure chest,-,1111\n')
self.assertEqual(lines[4], b'uber secret laire,admin,admin\n')
file_object.close()
def testReadlinesWithSizeHint(self):
"""Test the readlines() function."""
test_file_path = self._GetTestFilePath(['password.csv'])
self._SkipIfPathNotExists(test_file_path)
test_path_spec = os_path_spec.OSPathSpec(location=test_file_path)
file_object = os_file_io.OSFile(self._resolver_context)
file_object.open(test_path_spec)
line_reader = line_reader_file.BinaryLineReader(file_object)
lines = line_reader.readlines(sizehint=60)
self.assertEqual(len(lines), 3)
self.assertEqual(lines[0], b'place,user,password\n')
self.assertEqual(lines[1], b'bank,joesmith,superrich\n')
self.assertEqual(lines[2], b'alarm system,-,1234\n')
file_object.close()
def testReadlinesWithFileWithoutNewLineAtEnd(self):
"""Test reading lines from a file without a new line char at the end."""
test_file_path = self._GetTestFilePath(['mactime.body'])
self._SkipIfPathNotExists(test_file_path)
test_file_path_spec = os_path_spec.OSPathSpec(location=test_file_path)
file_object = os_file_io.OSFile(self._resolver_context)
file_object.open(test_file_path_spec)
line_reader = line_reader_file.BinaryLineReader(file_object)
lines = line_reader.readlines()
self.assertEqual(len(lines), 21)
def testIterator(self):
"""Test the iterator functionality."""
test_file_path = self._GetTestFilePath(['password.csv'])
self._SkipIfPathNotExists(test_file_path)
test_path_spec = os_path_spec.OSPathSpec(location=test_file_path)
file_object = os_file_io.OSFile(self._resolver_context)
file_object.open(test_path_spec)
line_reader = line_reader_file.BinaryLineReader(file_object)
lines = []
for line in line_reader:
lines.append(line)
self.assertEqual(len(lines), 5)
self.assertEqual(lines[0], b'place,user,password\n')
self.assertEqual(lines[1], b'bank,joesmith,superrich\n')
self.assertEqual(lines[2], b'alarm system,-,1234\n')
self.assertEqual(lines[3], b'treasure chest,-,1111\n')
self.assertEqual(lines[4], b'uber secret laire,admin,admin\n')
file_object.close()
# TODO: Add a test which tests reading a file which is
# larger than the buffer size, and read lines until it crosses
# that original buffer size (to test if the buffer is correctly
# filled).
class BinaryDSVReaderTest(shared_test_lib.BaseTestCase):
"""Tests for the binary delimited separated values reader."""
def testIterator(self):
"""Tests the iterator functionality."""
test_file_path = self._GetTestFilePath(['password.csv'])
self._SkipIfPathNotExists(test_file_path)
test_path_spec = os_path_spec.OSPathSpec(location=test_file_path)
resolver_context = context.Context()
file_object = os_file_io.OSFile(resolver_context)
file_object.open(test_path_spec)
line_reader = line_reader_file.BinaryLineReader(file_object)
dsv_reader = line_reader_file.BinaryDSVReader(line_reader, delimiter=b',')
rows = []
for row in dsv_reader:
rows.append(row)
self.assertEqual(len(rows), 5)
self.assertEqual(rows[0], [b'place', b'user', b'password'])
self.assertEqual(rows[1], [b'bank', b'joesmith', b'superrich'])
self.assertEqual(rows[2], [b'alarm system', b'-', b'1234'])
self.assertEqual(rows[3], [b'treasure chest', b'-', b'1111'])
self.assertEqual(rows[4], [b'uber secret laire', b'admin', b'admin'])
if __name__ == '__main__':
unittest.main()
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