# -*- coding: utf-8 -*-
'''
    :codeauthor: :email:`Jayesh Kariya <jayeshk@saltstack.com>`
'''
# Import Python libs
from __future__ import absolute_import
import os
import copy

# Import Salt Testing Libs
from tests.support.mixins import LoaderModuleMockMixin
from tests.support.unit import skipIf, TestCase
from tests.support.mock import (
    NO_MOCK,
    NO_MOCK_REASON,
    MagicMock,
    patch
)

# Import Salt Libs
import salt.modules.scsi as scsi
import salt.utils


@skipIf(NO_MOCK, NO_MOCK_REASON)
class ScsiTestCase(TestCase, LoaderModuleMockMixin):
    '''
    Test cases for salt.modules.scsi
    '''
    def setup_loader_modules(self):
        return {scsi: {}}

    def test_ls_(self):
        '''
        Test for list SCSI devices, with details
        '''
        lsscsi = {
            'stdout': '[0:0:0:0] disk HP LOGICAL VOLUME 6.68 /dev/sda [8:0]',
            'stderr': '',
            'retcode': 0
        }

        lsscsi_size = {
            'stdout': '[0:0:0:0] disk HP LOGICAL VOLUME 6.68 /dev/sda [8:0] 1.20TB',
            'stderr': '',
            'retcode': 0
        }

        result = {
            '[0:0:0:0]': {
                'major': '8',
                'lun': '0:0:0:0',
                'device': '/dev/sda',
                'model': 'LOGICAL VOLUME 6.68',
                'minor': '0',
                'size': None,
            }
        }
        result_size = copy.deepcopy(result)
        result_size['[0:0:0:0]']['size'] = '1.20TB'

        mock = MagicMock(return_value='/usr/bin/lsscsi')
        with patch.object(salt.utils, 'which', mock):
            # get_size = True

            cmd_mock = MagicMock(return_value=lsscsi_size)
            with patch.dict(scsi.__salt__, {'cmd.run_all': cmd_mock}):
                self.assertDictEqual(scsi.ls_(), result_size)
                with patch.dict(lsscsi_size, {'retcode': 1, 'stderr': 'An error occurred'}):
                    self.assertEqual(scsi.ls_(), 'An error occurred')
                with patch.dict(lsscsi_size, {'retcode': 1, 'stderr': "lsscsi: invalid option -- 's'\nUsage:"}):
                    self.assertEqual(scsi.ls_(), "lsscsi: invalid option -- 's' - try get_size=False")

            # get_size = False
            cmd_mock = MagicMock(return_value=lsscsi)
            with patch.dict(scsi.__salt__, {'cmd.run_all': cmd_mock}):
                self.assertDictEqual(scsi.ls_(get_size=False), result)

        mock = MagicMock(return_value=None)
        with patch.object(salt.utils, 'which', mock):
            self.assertEqual(scsi.ls_(), 'scsi.ls not available - lsscsi command not found')

    def test_rescan_all(self):
        '''
        Test for list scsi devices
        '''
        mock = MagicMock(side_effect=[False, True])
        with patch.object(os.path, 'isdir', mock):
            self.assertEqual(scsi.rescan_all('host'),
                             'Host host does not exist')

            with patch.dict(scsi.__salt__,
                            {'cmd.run': MagicMock(return_value='A')}):
                self.assertListEqual(scsi.rescan_all('host'), ['A'])