# -*- coding: utf-8 -*-
'''
    :codeauthor: :email:`Jayesh Kariya <jayeshk@saltstack.com>`
'''

# Import Python Libs
from __future__ import absolute_import

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

# Import Salt Libs
from salt.modules import memcached
from salt.exceptions import CommandExecutionError, SaltInvocationError
from salt.ext.six import integer_types


@skipIf(NO_MOCK, NO_MOCK_REASON)
class MemcachedTestCase(TestCase):
    '''
    Test cases for salt.modules.memcached
    '''
    # 'status' function tests: 2

    def test_status(self):
        '''
        Test if it gets memcached status
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertDictEqual(memcached.status(),
                                 {'127.0.0.1:11211 (1)': {}})

    def test_status_false(self):
        '''
        Test if it gets memcached status
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return []

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertFalse(memcached.status())

    # 'get' function tests: 1

    def test_get(self):
        '''
        Test if it retrieve value for a key
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            @staticmethod
            def get(key):
                """
                Mock of get method
                """
                return key

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertEqual(memcached.get('salt'), 'salt')

    # 'set_' function tests: 1

    def test_set(self):
        '''
        Test if it set a key on the memcached server
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None
                self.value = None
                self.time = None
                self.min_compress_len = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def set(self, key, value, time, min_compress_len):
                """
                Mock of set method
                """
                self.key = key
                self.value = value
                self.time = time
                self.min_compress_len = min_compress_len
                return True

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertTrue(memcached.set_('salt', '1111'))

            self.assertRaises(SaltInvocationError, memcached.set_,
                              'salt', '1111', time='0.1')

            self.assertRaises(SaltInvocationError, memcached.set_,
                              'salt', '1111', min_compress_len='0.1')

    # 'delete' function tests: 1

    def test_delete(self):
        '''
        Test if it delete a key from memcache server
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None
                self.time = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def delete(self, key, time):
                """
                Mock of delete method
                """
                self.key = key
                self.time = time
                return True

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertTrue(memcached.delete('salt'))

            self.assertRaises(SaltInvocationError, memcached.delete,
                              'salt', '1111', time='0.1')

    # 'add' function tests: 1

    def test_add(self):
        '''
        Test if it add a key from memcache server
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None
                self.value = None
                self.time = None
                self.min_compress_len = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def add(self, key, value, time, min_compress_len):
                """
                Mock of add method
                """
                self.key = key
                self.value = value
                self.time = time
                self.min_compress_len = min_compress_len
                return True

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertTrue(memcached.add('salt', '1111'))

            self.assertRaises(SaltInvocationError, memcached.add,
                              'salt', '1111', time='0.1')

            self.assertRaises(SaltInvocationError, memcached.add,
                              'salt', '1111', min_compress_len='0.1')

    # 'replace' function tests: 1

    def test_replace(self):
        '''
        Test if it replace a key from memcache server
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None
                self.value = None
                self.time = None
                self.min_compress_len = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def replace(self, key, value, time, min_compress_len):
                """
                Mock of replace method
                """
                self.key = key
                self.value = value
                self.time = time
                self.min_compress_len = min_compress_len
                return True

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertTrue(memcached.replace('salt', '1111'))

            self.assertRaises(SaltInvocationError, memcached.replace,
                              'salt', '1111', time='0.1')

            self.assertRaises(SaltInvocationError, memcached.replace,
                              'salt', '1111', min_compress_len='0.1')

    # 'increment' function tests: 3

    def test_increment(self):
        '''
        Test if it increment the value of a key
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def get(self, key):
                """
                Mock of get method
                """
                self.key = key
                return 1

            def incr(self, key, delta):
                """
                Mock of incr method
                """
                self.key = key
                if not isinstance(delta, integer_types):
                    raise SaltInvocationError('Delta value must be an integer')
                return key

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertEqual(memcached.increment('salt'), 'salt')

            self.assertRaises(SaltInvocationError, memcached.increment,
                              'salt', delta='sa')

    def test_increment_exist(self):
        '''
        Test if it increment the value of a key
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def get(self, key):
                """
                Mock of get method
                """
                self.key = key
                return key

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertRaises(CommandExecutionError, memcached.increment,
                              'salt')

    def test_increment_none(self):
        '''
        Test if it increment the value of a key
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def get(self, key):
                """
                Mock of get method
                """
                self.key = key
                return None

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertRaises(CommandExecutionError, memcached.increment,
                              'salt')

    # 'decrement' function tests: 3

    def test_decrement(self):
        '''
        Test if it decrement the value of a key
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def get(self, key):
                """
                Mock of get method
                """
                self.key = key
                return 1

            def decr(self, key, delta):
                """
                Mock of decr method
                """
                self.key = key
                if not isinstance(delta, integer_types):
                    raise SaltInvocationError('Delta value must be an integer')
                return key

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertEqual(memcached.decrement('salt'), 'salt')

            self.assertRaises(SaltInvocationError, memcached.decrement,
                              'salt', delta='sa')

    def test_decrement_exist(self):
        '''
        Test if it decrement the value of a key
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def get(self, key):
                """
                Mock of get method
                """
                self.key = key
                return key

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertRaises(CommandExecutionError, memcached.decrement,
                              'salt')

    def test_decrement_none(self):
        '''
        Test if it decrement the value of a key
        '''
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def get(self, key):
                """
                Mock of get method
                """
                self.key = key
                return None

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertRaises(CommandExecutionError, memcached.decrement,
                              'salt')