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# -*- coding: utf-8 -*-
# vim: ts=4 sw=4 tw=88 et ai si
#
# Copyright (c) 2012-2014 Intel, Inc.
# License: GPLv2
# Author: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
"""
This test verifies 'BmapHelpers' module functionality.
"""
import os
import sys
import tempfile
try:
from unittest.mock import patch
except ImportError: # for Python < 3.3
from mock import patch
try:
from tempfile import TemporaryDirectory
except ImportError: # for Python < 3.2
from backports.tempfile import TemporaryDirectory
from bmaptool import BmapHelpers
# This is a work-around for Centos 6
try:
import unittest2 as unittest # pylint: disable=F0401
except ImportError:
import unittest
class TestBmapHelpers(unittest.TestCase):
"""The test class for these unit tests."""
def test_get_file_system_type(self):
"""Check a file system type is returned when used with a file"""
with tempfile.NamedTemporaryFile(
"r", prefix="testfile_", delete=True, dir=".", suffix=".img"
) as fobj:
fstype = BmapHelpers.get_file_system_type(fobj.name)
self.assertTrue(fstype)
def test_get_file_system_type_no_fstype_found(self):
"""Check error raised when supplied file doesn't exist"""
directory = os.path.dirname(__file__)
fobj = os.path.join(directory, "BmapHelpers/file/does/not/exist")
with self.assertRaises(BmapHelpers.Error):
BmapHelpers.get_file_system_type(fobj)
def test_get_file_system_type_symlink(self):
"""Check a file system type is returned when used with a symlink"""
with TemporaryDirectory(prefix="testdir_", dir=".") as directory:
with tempfile.NamedTemporaryFile(
"r", prefix="testfile_", delete=False, dir=directory, suffix=".img"
) as fobj:
lnk = os.path.join(directory, "test_symlink")
os.symlink(fobj.name, lnk)
fstype = BmapHelpers.get_file_system_type(lnk)
self.assertTrue(fstype)
def test_is_zfs_configuration_compatible_enabled(self):
"""Check compatibility check is true when zfs param is set correctly"""
with tempfile.NamedTemporaryFile(
"w+", prefix="testfile_", delete=True, dir=".", suffix=".txt"
) as fobj:
fobj.write("1")
fobj.flush()
mockobj = patch.object(BmapHelpers, "ZFS_COMPAT_PARAM_PATH", fobj.name)
with mockobj:
self.assertTrue(BmapHelpers.is_zfs_configuration_compatible())
def test_is_zfs_configuration_compatible_disabled(self):
"""Check compatibility check is false when zfs param is set incorrectly"""
with tempfile.NamedTemporaryFile(
"w+", prefix="testfile_", delete=True, dir=".", suffix=".txt"
) as fobj:
fobj.write("0")
fobj.flush()
mockobj = patch.object(BmapHelpers, "ZFS_COMPAT_PARAM_PATH", fobj.name)
with mockobj:
self.assertFalse(BmapHelpers.is_zfs_configuration_compatible())
def test_is_zfs_configuration_compatible_invalid_read_value(self):
"""Check error raised if any content of zfs config file invalid"""
with tempfile.NamedTemporaryFile(
"a", prefix="testfile_", delete=True, dir=".", suffix=".txt"
) as fobj:
mockobj = patch.object(BmapHelpers, "ZFS_COMPAT_PARAM_PATH", fobj.name)
with self.assertRaises(BmapHelpers.Error):
with mockobj:
BmapHelpers.is_zfs_configuration_compatible()
@patch("builtins.open" if sys.version_info[0] >= 3 else "__builtin__.open")
def test_is_zfs_configuration_compatible_unreadable_file(self, mock_open):
"""Check error raised if any IO errors when checking zfs config file"""
mock_open.side_effect = IOError
with self.assertRaises(BmapHelpers.Error):
if not BmapHelpers.is_zfs_configuration_compatible():
raise BmapHelpers.Error
def test_is_zfs_configuration_compatible_not_installed(self):
"""Check compatibility check passes when zfs not installed"""
directory = os.path.dirname(__file__)
filepath = os.path.join(directory, "BmapHelpers/file/does/not/exist")
mockobj = patch.object(BmapHelpers, "ZFS_COMPAT_PARAM_PATH", filepath)
with mockobj:
self.assertFalse(BmapHelpers.is_zfs_configuration_compatible())
@patch.object(BmapHelpers, "get_file_system_type", return_value="zfs")
def test_is_compatible_file_system_zfs_valid(
self, mock_get_fs_type
): # pylint: disable=unused-argument
"""Check compatibility check passes when zfs param is set correctly"""
with tempfile.NamedTemporaryFile(
"w+", prefix="testfile_", delete=True, dir=".", suffix=".img"
) as fobj:
fobj.write("1")
fobj.flush()
mockobj = patch.object(BmapHelpers, "ZFS_COMPAT_PARAM_PATH", fobj.name)
with mockobj:
self.assertTrue(BmapHelpers.is_compatible_file_system(fobj.name))
@patch.object(BmapHelpers, "get_file_system_type", return_value="zfs")
def test_is_compatible_file_system_zfs_invalid(
self, mock_get_fs_type
): # pylint: disable=unused-argument
"""Check compatibility check fails when zfs param is set incorrectly"""
with tempfile.NamedTemporaryFile(
"w+", prefix="testfile_", delete=True, dir=".", suffix=".img"
) as fobj:
fobj.write("0")
fobj.flush()
mockobj = patch.object(BmapHelpers, "ZFS_COMPAT_PARAM_PATH", fobj.name)
with mockobj:
self.assertFalse(BmapHelpers.is_compatible_file_system(fobj.name))
@patch.object(BmapHelpers, "get_file_system_type", return_value="ext4")
def test_is_compatible_file_system_ext4(
self, mock_get_fs_type
): # pylint: disable=unused-argument
"""Check non-zfs file systems pass compatibility checks"""
with tempfile.NamedTemporaryFile(
"w+", prefix="testfile_", delete=True, dir=".", suffix=".img"
) as fobj:
self.assertTrue(BmapHelpers.is_compatible_file_system(fobj.name))
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