# -*- coding: utf-8 -*-
'''
    :codeauthor: :email:`Shane Lee <slee@saltstack.com>`
'''
# Import Python libs
from __future__ import absolute_import, print_function, unicode_literals
import errno
import textwrap

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

# Import Salt Libs
import salt.grains.iscsi as iscsi


@skipIf(NO_MOCK, NO_MOCK_REASON)
class IscsiGrainsTestCase(TestCase):
    '''
    Test cases for iscsi grains
    '''
    def test_windows_iscsi_iqn_grains(self):
        cmd_run_mock = MagicMock(
            return_value={'stdout': 'iSCSINodeName\n'
                                    'iqn.1991-05.com.microsoft:simon-x1\n'}
        )
        _grains = {}
        with patch('salt.utils.path.which', MagicMock(return_value=True)):
            with patch('salt.modules.cmdmod.run_all', cmd_run_mock):
                _grains['iscsi_iqn'] = iscsi._windows_iqn()

        self.assertEqual(_grains.get('iscsi_iqn'),
                         ['iqn.1991-05.com.microsoft:simon-x1'])

    def test_aix_iscsi_iqn_grains(self):
        cmd_run_mock = MagicMock(
            return_value='initiator_name iqn.localhost.hostid.7f000001'
        )

        _grains = {}
        with patch('salt.modules.cmdmod.run', cmd_run_mock):
            _grains['iscsi_iqn'] = iscsi._aix_iqn()

        self.assertEqual(_grains.get('iscsi_iqn'),
                         ['iqn.localhost.hostid.7f000001'])

    def test_linux_iscsi_iqn_grains(self):
        _iscsi_file = textwrap.dedent('''\
            ## DO NOT EDIT OR REMOVE THIS FILE!
            ## If you remove this file, the iSCSI daemon will not start.
            ## If you change the InitiatorName, existing access control lists
            ## may reject this initiator.  The InitiatorName must be unique
            ## for each iSCSI initiator.  Do NOT duplicate iSCSI InitiatorNames.
            InitiatorName=iqn.1993-08.org.debian:01:d12f7aba36
            ''')

        with patch('salt.utils.files.fopen', mock_open(read_data=_iscsi_file)):
            iqn = iscsi._linux_iqn()

        assert isinstance(iqn, list)
        assert len(iqn) == 1
        assert iqn == ['iqn.1993-08.org.debian:01:d12f7aba36']

    @patch('salt.utils.files.fopen', MagicMock(side_effect=IOError(errno.EPERM,
                                                                   'The cables are not the same length.')))
    @patch('salt.grains.iscsi.log', MagicMock())
    def test_linux_iqn_non_root(self):
        '''
        Test if linux_iqn is running on salt-master as non-root
        and handling access denial properly.
        :return:
        '''
        assert iscsi._linux_iqn() == []
        iscsi.log.debug.assert_called()
        assert 'Error while accessing' in iscsi.log.debug.call_args[0][0]
        assert 'cables are not the same' in iscsi.log.debug.call_args[0][2].strerror
        assert iscsi.log.debug.call_args[0][2].errno == errno.EPERM
        assert iscsi.log.debug.call_args[0][1] == '/etc/iscsi/initiatorname.iscsi'

    @patch('salt.utils.files.fopen', MagicMock(side_effect=IOError(errno.ENOENT, '')))
    @patch('salt.grains.iscsi.log', MagicMock())
    def test_linux_iqn_no_iscsii_initiator(self):
        '''
        Test if linux_iqn is running on salt-master as root.
        iscsii initiator is not there accessible or is not supported.
        :return:
        '''
        assert iscsi._linux_iqn() == []
        iscsi.log.debug.assert_not_called()