# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

import functools

from odoo.tests.common import BaseCase
from odoo.tools import frozendict
from odoo.tools.func import compose
from odoo import Command


class TestCompose(BaseCase):
    def test_basic(self):
        str_add = compose(str, lambda a, b: a + b)
        self.assertEqual(str_add(1, 2), "3")

    def test_decorator(self):
        """ ensure compose() can be partially applied as a decorator
        """
        @functools.partial(compose, str)
        def mul(a, b):
            return a * b

        self.assertEqual(mul(5, 42), u"210")


class TestFrozendict(BaseCase):
    def test_frozendict_immutable(self):
        """ Ensure that a frozendict is immutable. """
        vals = {'name': 'Joe', 'age': 42}
        frozen_vals = frozendict(vals)

        # check __setitem__, __delitem__
        with self.assertRaises(Exception):
            frozen_vals['surname'] = 'Jack'
        with self.assertRaises(Exception):
            frozen_vals['name'] = 'Jack'
        with self.assertRaises(Exception):
            del frozen_vals['name']

        # check update, setdefault, pop, popitem, clear
        with self.assertRaises(Exception):
            frozen_vals.update({'surname': 'Jack'})
        with self.assertRaises(Exception):
            frozen_vals.update({'name': 'Jack'})
        with self.assertRaises(Exception):
            frozen_vals.setdefault('surname', 'Jack')
        with self.assertRaises(Exception):
            frozen_vals.pop('surname', 'Jack')
        with self.assertRaises(Exception):
            frozen_vals.pop('name', 'Jack')
        with self.assertRaises(Exception):
            frozen_vals.popitem()
        with self.assertRaises(Exception):
            frozen_vals.clear()

    def test_frozendict_hash(self):
        """ Ensure that a frozendict is hashable. """
        # dict with simple values
        hash(frozendict({'name': 'Joe', 'age': 42}))

        # dict with tuples, lists, and embedded dicts
        hash(frozendict({
            'user_id': (42, 'Joe'),
            'line_ids': [Command.create({'values': [42]})],
        }))