def test_swap(self):
        name = '/mnt/sdb'

        ret = {'name': name,
               'result': None,
               'comment': '',
               'changes': {}}

        mock = MagicMock(side_effect=['present', 'new', 'change', 'bad config'])
        mock_f = MagicMock(return_value=False)
        mock_swp = MagicMock(return_value=[name])
        mock_fs = MagicMock(return_value={'none': {'device': name,
                                                   'fstype': 'xfs'}})
        mock_emt = MagicMock(return_value={})
        with patch.dict(mount.__salt__, {'mount.swaps': mock_swp,
                                         'mount.fstab': mock_fs,
                                         'file.is_link': mock_f}):
            with patch.dict(mount.__opts__, {'test': True}):
                comt = ('Swap {0} is set to be added to the '
                        'fstab and to be activated'.format(name))
                ret.update({'comment': comt})
                self.assertDictEqual(mount.swap(name), ret)

            with patch.dict(mount.__opts__, {'test': False}):
                comt = ('Swap {0} already active'.format(name))
                ret.update({'comment': comt, 'result': True})
                self.assertDictEqual(mount.swap(name), ret)

                with patch.dict(mount.__salt__, {'mount.fstab': mock_emt,
                                                 'mount.set_fstab': mock}):
                    comt = ('Swap {0} already active'.format(name))
                    ret.update({'comment': comt, 'result': True})
                    self.assertDictEqual(mount.swap(name), ret)

                    comt = ('Swap /mnt/sdb already active. '
                            'Added new entry to the fstab.')
                    ret.update({'comment': comt, 'result': True,
                                'changes': {'persist': 'new'}})
                    self.assertDictEqual(mount.swap(name), ret)

                    comt = ('Swap /mnt/sdb already active. '
                            'Updated the entry in the fstab.')
                    ret.update({'comment': comt, 'result': True,
                                'changes': {'persist': 'update'}})
                    self.assertDictEqual(mount.swap(name), ret)

                    comt = ('Swap /mnt/sdb already active. '
                            'However, the fstab was not found.')
                    ret.update({'comment': comt, 'result': False,
                                'changes': {}})
                    self.assertDictEqual(mount.swap(name), ret)

    # 'unmounted' function tests: 1
Test to activates a swap device.
dataset/ETHPy150Open saltstack/salt/tests/unit/states/mount_test.py/MountTestCase.test_swap