# -*- coding: utf-8 -*-
#
# Copyright © 2012 - 2020 Michal Čihař <michal@cihar.com>
#
# This file is part of Weblate <https://weblate.org/>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
#

"""
Tests for special chars.
"""

from __future__ import unicode_literals

from unittest import TestCase

import six
from django.test.utils import override_settings

from weblate.lang.models import Language
from weblate.trans.specialchars import get_special_chars


class SpecialCharsTest(TestCase):
    def check_chars(self, language, count, matches, *args, **kwargs):
        result = get_special_chars(language, *args, **kwargs)
        chars = {x[2] for x in result}
        self.assertEqual(len(chars), count)
        for match in matches:
            self.assertIn(match, chars)

    def test_af(self):
        chars = list(get_special_chars(Language(code='af')))
        self.assertEqual(len(chars), 10)

    def test_cs(self):
        chars = list(get_special_chars(Language(code='cs')))
        self.assertEqual(len(chars), 9)

    def test_brx(self):
        chars = list(get_special_chars(Language(code='brx')))
        self.assertEqual(len(chars), 9)

    def test_brx_add(self):
        chars = list(get_special_chars(Language(code='brx'), 'ahoj'))
        self.assertEqual(len(chars), 13)

    @override_settings(SPECIAL_CHARS=[six.unichr(x) for x in range(256)])
    def test_settings(self):
        chars = list(get_special_chars(Language(code='cs')))
        self.assertEqual(len(chars), 262)

    def test_additional(self):
        self.check_chars(
            Language(code='cs'),
            13,
            ['a', 'h', 'o', 'j'],
            additional='ahoj'
        )

    def test_arrows(self):
        self.check_chars(
            Language(code='cs'),
            11,
            ['→', '⇒'],
            source='→⇒→⇒'
        )

    def test_arrows_rtl(self):
        self.check_chars(
            Language(code='ar', direction='rtl'),
            12,
            ['←', '⇐'],
            source='→⇒→⇒'
        )
