import locale
import logging
import os
import shutil
from datetime import timezone
from sys import platform
from tempfile import mkdtemp

try:
    from zoneinfo import ZoneInfo
except ModuleNotFoundError:
    from backports.zoneinfo import ZoneInfo

from pelican import utils
from pelican.generators import TemplatePagesGenerator
from pelican.settings import read_settings
from pelican.tests.support import (LoggedTestCase, get_article,
                                   locale_available, unittest)
from pelican.writers import Writer


class TestUtils(LoggedTestCase):
    _new_attribute = 'new_value'

    def setUp(self):
        super().setUp()
        self.temp_output = mkdtemp(prefix='pelicantests.')

    def tearDown(self):
        super().tearDown()
        shutil.rmtree(self.temp_output)

    @utils.deprecated_attribute(
        old='_old_attribute', new='_new_attribute',
        since=(3, 1, 0), remove=(4, 1, 3))
    def _old_attribute():
        return None

    def test_deprecated_attribute(self):
        value = self._old_attribute
        self.assertEqual(value, self._new_attribute)
        self.assertLogCountEqual(
            count=1,
            msg=('_old_attribute has been deprecated since 3.1.0 and will be '
                 'removed by version 4.1.3.  Use _new_attribute instead'),
            level=logging.WARNING)

    def test_get_date(self):
        # valid ones
        date = utils.SafeDatetime(year=2012, month=11, day=22)
        date_hour = utils.SafeDatetime(
            year=2012, month=11, day=22, hour=22, minute=11)
        date_hour_z = utils.SafeDatetime(
            year=2012, month=11, day=22, hour=22, minute=11,
            tzinfo=timezone.utc)
        date_hour_est = utils.SafeDatetime(
            year=2012, month=11, day=22, hour=22, minute=11,
            tzinfo=ZoneInfo("EST"))
        date_hour_sec = utils.SafeDatetime(
            year=2012, month=11, day=22, hour=22, minute=11, second=10)
        date_hour_sec_z = utils.SafeDatetime(
            year=2012, month=11, day=22, hour=22, minute=11, second=10,
            tzinfo=timezone.utc)
        date_hour_sec_est = utils.SafeDatetime(
            year=2012, month=11, day=22, hour=22, minute=11, second=10,
            tzinfo=ZoneInfo("EST"))
        date_hour_sec_frac_z = utils.SafeDatetime(
            year=2012, month=11, day=22, hour=22, minute=11, second=10,
            microsecond=123000, tzinfo=timezone.utc)
        dates = {
            '2012-11-22': date,
            '2012/11/22': date,
            '2012-11-22 22:11': date_hour,
            '2012/11/22 22:11': date_hour,
            '22-11-2012': date,
            '22/11/2012': date,
            '22.11.2012': date,
            '22.11.2012 22:11': date_hour,
            '2012-11-22T22:11Z': date_hour_z,
            '2012-11-22T22:11-0500': date_hour_est,
            '2012-11-22 22:11:10': date_hour_sec,
            '2012-11-22T22:11:10Z': date_hour_sec_z,
            '2012-11-22T22:11:10-0500': date_hour_sec_est,
            '2012-11-22T22:11:10.123Z': date_hour_sec_frac_z,
        }

        # examples from http://www.w3.org/TR/NOTE-datetime
        iso_8601_date = utils.SafeDatetime(year=1997, month=7, day=16)
        iso_8601_date_hour_tz = utils.SafeDatetime(
            year=1997, month=7, day=16, hour=19, minute=20,
            tzinfo=ZoneInfo("Europe/London"))
        iso_8601_date_hour_sec_tz = utils.SafeDatetime(
            year=1997, month=7, day=16, hour=19, minute=20, second=30,
            tzinfo=ZoneInfo("Europe/London"))
        iso_8601_date_hour_sec_ms_tz = utils.SafeDatetime(
            year=1997, month=7, day=16, hour=19, minute=20, second=30,
            microsecond=450000, tzinfo=ZoneInfo("Europe/London"))
        iso_8601 = {
            '1997-07-16': iso_8601_date,
            '1997-07-16T19:20+01:00': iso_8601_date_hour_tz,
            '1997-07-16T19:20:30+01:00': iso_8601_date_hour_sec_tz,
            '1997-07-16T19:20:30.45+01:00': iso_8601_date_hour_sec_ms_tz,
        }

        # invalid ones
        invalid_dates = ['2010-110-12', 'yay']

        for value, expected in dates.items():
            self.assertEqual(utils.get_date(value), expected, value)

        for value, expected in iso_8601.items():
            self.assertEqual(utils.get_date(value), expected, value)

        for item in invalid_dates:
            self.assertRaises(ValueError, utils.get_date, item)

    def test_slugify(self):

        samples = (('this is a test', 'this-is-a-test'),
                   ('this        is a test', 'this-is-a-test'),
                   ('this → is ← a ↑ test', 'this-is-a-test'),
                   ('this--is---a test', 'this-is-a-test'),
                   ('unicode測試許功蓋，你看到了嗎？',
                    'unicodece-shi-xu-gong-gai-ni-kan-dao-liao-ma'),
                   ('大飯原発４号機、１８日夜起動へ',
                    'da-fan-yuan-fa-4hao-ji-18ri-ye-qi-dong-he'),)

        settings = read_settings()
        subs = settings['SLUG_REGEX_SUBSTITUTIONS']

        for value, expected in samples:
            self.assertEqual(utils.slugify(value, regex_subs=subs), expected)

        self.assertEqual(utils.slugify('Cat', regex_subs=subs), 'cat')
        self.assertEqual(
            utils.slugify('Cat', regex_subs=subs, preserve_case=False), 'cat')
        self.assertEqual(
            utils.slugify('Cat', regex_subs=subs, preserve_case=True), 'Cat')

    def test_slugify_use_unicode(self):

        samples = (
            ('this is a test', 'this-is-a-test'),
            ('this        is a test', 'this-is-a-test'),
            ('this → is ← a ↑ test', 'this-is-a-test'),
            ('this--is---a test', 'this-is-a-test'),
            ('unicode測試許功蓋，你看到了嗎？', 'unicode測試許功蓋你看到了嗎'),
            ('Çığ', 'çığ')
        )

        settings = read_settings()
        subs = settings['SLUG_REGEX_SUBSTITUTIONS']

        for value, expected in samples:
            self.assertEqual(
                utils.slugify(value, regex_subs=subs, use_unicode=True),
                expected)

        # check with preserve case
        for value, expected in samples:
            self.assertEqual(
                utils.slugify('Çığ', regex_subs=subs,
                              preserve_case=True, use_unicode=True),
                'Çığ')

        # check normalization
        samples = (
            ('大飯原発４号機、１８日夜起動へ', '大飯原発4号機18日夜起動へ'),
            (
                '\N{LATIN SMALL LETTER C}\N{COMBINING CEDILLA}',
                '\N{LATIN SMALL LETTER C WITH CEDILLA}'
            )
        )
        for value, expected in samples:
            self.assertEqual(
                utils.slugify(value, regex_subs=subs, use_unicode=True),
                expected)

    def test_slugify_substitute(self):

        samples = (('C++ is based on C', 'cpp-is-based-on-c'),
                   ('C+++ test C+ test', 'cpp-test-c-test'),
                   ('c++, c#, C#, C++', 'cpp-c-sharp-c-sharp-cpp'),
                   ('c++-streams', 'cpp-streams'),)

        settings = read_settings()
        subs = [
            (r'C\+\+', 'CPP'),
            (r'C#', 'C-SHARP'),
        ] + settings['SLUG_REGEX_SUBSTITUTIONS']
        for value, expected in samples:
            self.assertEqual(utils.slugify(value, regex_subs=subs), expected)

    def test_slugify_substitute_and_keeping_non_alphanum(self):

        samples = (('Fedora QA', 'fedora.qa'),
                   ('C++ is used by Fedora QA', 'cpp is used by fedora.qa'),
                   ('C++ is based on C', 'cpp is based on c'),
                   ('C+++ test C+ test', 'cpp+ test c+ test'),)

        subs = [
            (r'Fedora QA', 'fedora.qa'),
            (r'c\+\+', 'cpp'),
        ]
        for value, expected in samples:
            self.assertEqual(utils.slugify(value, regex_subs=subs), expected)

    def test_get_relative_path(self):

        samples = ((os.path.join('test', 'test.html'), os.pardir),
                   (os.path.join('test', 'test', 'test.html'),
                    os.path.join(os.pardir, os.pardir)),
                   ('test.html', os.curdir),
                   (os.path.join('/test', 'test.html'), os.pardir),
                   (os.path.join('/test', 'test', 'test.html'),
                    os.path.join(os.pardir, os.pardir)),
                   ('/test.html', os.curdir),)

        for value, expected in samples:
            self.assertEqual(utils.get_relative_path(value), expected)

    def test_truncate_html_words(self):
        # Plain text.
        self.assertEqual(
            utils.truncate_html_words('short string', 20),
            'short string')
        self.assertEqual(
            utils.truncate_html_words('word ' * 100, 20),
            'word ' * 20 + '…')

        # Plain text with Unicode content.
        self.assertEqual(
            utils.truncate_html_words(
                '我愿意这样，朋友——我独自远行，不但没有你，\
                 并且再没有别的影在黑暗里。', 12
            ),
            '我愿意这样，朋友——我独自远行' + ' …')
        self.assertEqual(
            utils.truncate_html_words(
                'Ты мелькнула, ты предстала, Снова сердце задрожало,', 3
            ),
            'Ты мелькнула, ты' + ' …')
        self.assertEqual(
            utils.truncate_html_words(
                'Trong đầm gì đẹp bằng sen', 4
            ),
            'Trong đầm gì đẹp' + ' …')

        # Words enclosed or intervaled by HTML tags.
        self.assertEqual(
            utils.truncate_html_words('<p>' + 'word ' * 100 + '</p>', 20),
            '<p>' + 'word ' * 20 + '…</p>')
        self.assertEqual(
            utils.truncate_html_words(
                '<span\nstyle="\n…\n">' + 'word ' * 100 + '</span>', 20),
            '<span\nstyle="\n…\n">' + 'word ' * 20 + '…</span>')
        self.assertEqual(
            utils.truncate_html_words('<br>' + 'word ' * 100, 20),
            '<br>' + 'word ' * 20 + '…')
        self.assertEqual(
            utils.truncate_html_words('<!-- comment -->' + 'word ' * 100, 20),
            '<!-- comment -->' + 'word ' * 20 + '…')

        # Words enclosed or intervaled by HTML tags with a custom end
        # marker containing HTML tags.
        self.assertEqual(
            utils.truncate_html_words('<p>' + 'word ' * 100 + '</p>', 20,
                                      '<span>marker</span>'),
            '<p>' + 'word ' * 20 + '<span>marker</span></p>')
        self.assertEqual(
            utils.truncate_html_words(
                    '<span\nstyle="\n…\n">' + 'word ' * 100 + '</span>', 20,
                    '<span>marker</span>'),
            '<span\nstyle="\n…\n">' + 'word ' * 20 + '<span>marker</span></span>')
        self.assertEqual(
            utils.truncate_html_words('<br>' + 'word ' * 100, 20,
                                      '<span>marker</span>'),
            '<br>' + 'word ' * 20 + '<span>marker</span>')
        self.assertEqual(
            utils.truncate_html_words('<!-- comment -->' + 'word ' * 100, 20,
                                      '<span>marker</span>'),
            '<!-- comment -->' + 'word ' * 20 + '<span>marker</span>')

        # Words with hypens and apostrophes.
        self.assertEqual(
            utils.truncate_html_words("a-b " * 100, 20),
            "a-b " * 20 + '…')
        self.assertEqual(
            utils.truncate_html_words("it's " * 100, 20),
            "it's " * 20 + '…')

        # Words with HTML entity references.
        self.assertEqual(
            utils.truncate_html_words("&eacute; " * 100, 20),
            "&eacute; " * 20 + '…')
        self.assertEqual(
            utils.truncate_html_words("caf&eacute; " * 100, 20),
            "caf&eacute; " * 20 + '…')
        self.assertEqual(
            utils.truncate_html_words("&egrave;lite " * 100, 20),
            "&egrave;lite " * 20 + '…')
        self.assertEqual(
            utils.truncate_html_words("cafeti&eacute;re " * 100, 20),
            "cafeti&eacute;re " * 20 + '…')
        self.assertEqual(
            utils.truncate_html_words("&int;dx " * 100, 20),
            "&int;dx " * 20 + '…')

        # Words with HTML character references inside and outside
        # the ASCII range.
        self.assertEqual(
            utils.truncate_html_words("&#xe9; " * 100, 20),
            "&#xe9; " * 20 + '…')
        self.assertEqual(
            utils.truncate_html_words("&#x222b;dx " * 100, 20),
            "&#x222b;dx " * 20 + '…')

        # Words with invalid or broken HTML references.
        self.assertEqual(
            utils.truncate_html_words('&invalid;', 20), '&invalid;')
        self.assertEqual(
            utils.truncate_html_words('&#9999999999;', 20), '&#9999999999;')
        self.assertEqual(
            utils.truncate_html_words('&#xfffffffff;', 20), '&#xfffffffff;')
        self.assertEqual(
            utils.truncate_html_words('&mdash text', 20), '&mdash text')
        self.assertEqual(
            utils.truncate_html_words('&#1234 text', 20), '&#1234 text')
        self.assertEqual(
            utils.truncate_html_words('&#xabc text', 20), '&#xabc text')

    def test_process_translations(self):
        fr_articles = []
        en_articles = []

        # create a bunch of articles
        # 0: no translation metadata
        fr_articles.append(get_article(lang='fr', slug='yay0', title='Titre',
                                       content='en français'))
        en_articles.append(get_article(lang='en', slug='yay0', title='Title',
                                       content='in english'))
        # 1: translation metadata on default lang
        fr_articles.append(get_article(lang='fr', slug='yay1', title='Titre',
                                       content='en français'))
        en_articles.append(get_article(lang='en', slug='yay1', title='Title',
                                       content='in english',
                                       translation='true'))
        # 2: translation metadata not on default lang
        fr_articles.append(get_article(lang='fr', slug='yay2', title='Titre',
                                       content='en français',
                                       translation='true'))
        en_articles.append(get_article(lang='en', slug='yay2', title='Title',
                                       content='in english'))
        # 3: back to default language detection if all items have the
        #    translation metadata
        fr_articles.append(get_article(lang='fr', slug='yay3', title='Titre',
                                       content='en français',
                                       translation='yep'))
        en_articles.append(get_article(lang='en', slug='yay3', title='Title',
                                       content='in english',
                                       translation='yes'))
        # 4-5: translation pairs with the same slug but different category
        fr_articles.append(get_article(lang='fr', slug='yay4', title='Titre',
                                       content='en français', category='foo'))
        en_articles.append(get_article(lang='en', slug='yay4', title='Title',
                                       content='in english', category='foo'))
        fr_articles.append(get_article(lang='fr', slug='yay4', title='Titre',
                                       content='en français', category='bar'))
        en_articles.append(get_article(lang='en', slug='yay4', title='Title',
                                       content='in english', category='bar'))

        # try adding articles in both orders
        for lang0_articles, lang1_articles in ((fr_articles, en_articles),
                                               (en_articles, fr_articles)):
            articles = lang0_articles + lang1_articles

            # test process_translations with falsy translation_id
            index, trans = utils.process_translations(
                articles, translation_id=None)
            for i in range(6):
                for lang_articles in [en_articles, fr_articles]:
                    self.assertIn(lang_articles[i], index)
                    self.assertNotIn(lang_articles[i], trans)

            # test process_translations with simple and complex translation_id
            for translation_id in ['slug', {'slug', 'category'}]:
                index, trans = utils.process_translations(
                    articles, translation_id=translation_id)

                for a in [en_articles[0], fr_articles[1], en_articles[2],
                          en_articles[3], en_articles[4], en_articles[5]]:
                    self.assertIn(a, index)
                    self.assertNotIn(a, trans)

                for a in [fr_articles[0], en_articles[1], fr_articles[2],
                          fr_articles[3], fr_articles[4], fr_articles[5]]:
                    self.assertIn(a, trans)
                    self.assertNotIn(a, index)

                for i in range(6):
                    self.assertIn(en_articles[i], fr_articles[i].translations)
                    self.assertIn(fr_articles[i], en_articles[i].translations)

                for a_arts in [en_articles, fr_articles]:
                    for b_arts in [en_articles, fr_articles]:
                        if translation_id == 'slug':
                            self.assertIn(a_arts[4], b_arts[5].translations)
                            self.assertIn(a_arts[5], b_arts[4].translations)
                        elif translation_id == {'slug', 'category'}:
                            self.assertNotIn(a_arts[4], b_arts[5].translations)
                            self.assertNotIn(a_arts[5], b_arts[4].translations)

    def test_clean_output_dir(self):
        retention = ()
        test_directory = os.path.join(self.temp_output,
                                      'clean_output')
        content = os.path.join(os.path.dirname(__file__), 'content')
        shutil.copytree(content, test_directory)
        utils.clean_output_dir(test_directory, retention)
        self.assertTrue(os.path.isdir(test_directory))
        self.assertListEqual([], os.listdir(test_directory))
        shutil.rmtree(test_directory)

    def test_clean_output_dir_not_there(self):
        retention = ()
        test_directory = os.path.join(self.temp_output,
                                      'does_not_exist')
        utils.clean_output_dir(test_directory, retention)
        self.assertFalse(os.path.exists(test_directory))

    def test_clean_output_dir_is_file(self):
        retention = ()
        test_directory = os.path.join(self.temp_output,
                                      'this_is_a_file')
        f = open(test_directory, 'w')
        f.write('')
        f.close()
        utils.clean_output_dir(test_directory, retention)
        self.assertFalse(os.path.exists(test_directory))

    def test_strftime(self):
        d = utils.SafeDatetime(2012, 8, 29)

        # simple formatting
        self.assertEqual(utils.strftime(d, '%d/%m/%y'), '29/08/12')
        self.assertEqual(utils.strftime(d, '%d/%m/%Y'), '29/08/2012')

        # RFC 3339
        self.assertEqual(
            utils.strftime(d, '%Y-%m-%dT%H:%M:%SZ'),
            '2012-08-29T00:00:00Z')

        # % escaped
        self.assertEqual(utils.strftime(d, '%d%%%m%%%y'), '29%08%12')
        self.assertEqual(utils.strftime(d, '%d %% %m %% %y'), '29 % 08 % 12')
        # not valid % formatter
        self.assertEqual(utils.strftime(d, '10% reduction in %Y'),
                         '10% reduction in 2012')
        self.assertEqual(utils.strftime(d, '%10 reduction in %Y'),
                         '%10 reduction in 2012')

        # with text
        self.assertEqual(utils.strftime(d, 'Published in %d-%m-%Y'),
                         'Published in 29-08-2012')

        # with non-ascii text
        self.assertEqual(
            utils.strftime(d, '%d/%m/%Y Øl trinken beim Besäufnis'),
            '29/08/2012 Øl trinken beim Besäufnis')

        # alternative formatting options
        self.assertEqual(utils.strftime(d, '%-d/%-m/%y'), '29/8/12')
        self.assertEqual(utils.strftime(d, '%-H:%-M:%-S'), '0:0:0')

        d = utils.SafeDatetime(2012, 8, 9)
        self.assertEqual(utils.strftime(d, '%-d/%-m/%y'), '9/8/12')

        d = utils.SafeDatetime(2021, 1, 8)
        self.assertEqual(utils.strftime(d, '%G - %-V - %u'), '2021 - 1 - 5')

    # test the output of utils.strftime in a different locale
    # Turkish locale
    @unittest.skipUnless(locale_available('tr_TR.UTF-8') or
                         locale_available('Turkish'),
                         'Turkish locale needed')
    def test_strftime_locale_dependent_turkish(self):
        # store current locale
        old_locale = locale.setlocale(locale.LC_ALL)

        if platform == 'win32':
            locale.setlocale(locale.LC_ALL, 'Turkish')
        else:
            locale.setlocale(locale.LC_ALL, 'tr_TR.UTF-8')

        d = utils.SafeDatetime(2012, 8, 29)

        # simple
        self.assertEqual(utils.strftime(d, '%d %B %Y'), '29 Ağustos 2012')
        self.assertEqual(utils.strftime(d, '%A, %d %B %Y'),
                         'Çarşamba, 29 Ağustos 2012')

        # with text
        self.assertEqual(
            utils.strftime(d, 'Yayınlanma tarihi: %A, %d %B %Y'),
            'Yayınlanma tarihi: Çarşamba, 29 Ağustos 2012')

        # non-ascii format candidate (someone might pass it… for some reason)
        self.assertEqual(
            utils.strftime(d, '%Y yılında %üretim artışı'),
            '2012 yılında %üretim artışı')

        # restore locale back
        locale.setlocale(locale.LC_ALL, old_locale)

    # test the output of utils.strftime in a different locale
    # French locale
    @unittest.skipUnless(locale_available('fr_FR.UTF-8') or
                         locale_available('French'),
                         'French locale needed')
    def test_strftime_locale_dependent_french(self):
        # store current locale
        old_locale = locale.setlocale(locale.LC_ALL)

        if platform == 'win32':
            locale.setlocale(locale.LC_ALL, 'French')
        else:
            locale.setlocale(locale.LC_ALL, 'fr_FR.UTF-8')

        d = utils.SafeDatetime(2012, 8, 29)

        # simple
        self.assertEqual(utils.strftime(d, '%d %B %Y'), '29 août 2012')

        # depending on OS, the first letter is m or M
        self.assertTrue(utils.strftime(d, '%A') in ('mercredi', 'Mercredi'))

        # with text
        self.assertEqual(
            utils.strftime(d, 'Écrit le %d %B %Y'),
            'Écrit le 29 août 2012')

        # non-ascii format candidate (someone might pass it… for some reason)
        self.assertEqual(
            utils.strftime(d, '%écrits en %Y'),
            '%écrits en 2012')

        # restore locale back
        locale.setlocale(locale.LC_ALL, old_locale)

    def test_maybe_pluralize(self):
        self.assertEqual(
            utils.maybe_pluralize(0, 'Article', 'Articles'),
            '0 Articles')
        self.assertEqual(
            utils.maybe_pluralize(1, 'Article', 'Articles'),
            '1 Article')
        self.assertEqual(
            utils.maybe_pluralize(2, 'Article', 'Articles'),
            '2 Articles')


class TestCopy(unittest.TestCase):
    '''Tests the copy utility'''

    def setUp(self):
        self.root_dir = mkdtemp(prefix='pelicantests.')
        self.old_locale = locale.setlocale(locale.LC_ALL)
        locale.setlocale(locale.LC_ALL, 'C')

    def tearDown(self):
        shutil.rmtree(self.root_dir)
        locale.setlocale(locale.LC_ALL, self.old_locale)

    def _create_file(self, *path):
        with open(os.path.join(self.root_dir, *path), 'w') as f:
            f.write('42\n')

    def _create_dir(self, *path):
        os.makedirs(os.path.join(self.root_dir, *path))

    def _exist_file(self, *path):
        path = os.path.join(self.root_dir, *path)
        self.assertTrue(os.path.isfile(path), 'File does not exist: %s' % path)

    def _exist_dir(self, *path):
        path = os.path.join(self.root_dir, *path)
        self.assertTrue(os.path.exists(path),
                        'Directory does not exist: %s' % path)

    def test_copy_file_same_path(self):
        self._create_file('a.txt')
        utils.copy(os.path.join(self.root_dir, 'a.txt'),
                   os.path.join(self.root_dir, 'b.txt'))
        self._exist_file('b.txt')

    def test_copy_file_different_path(self):
        self._create_dir('a')
        self._create_dir('b')
        self._create_file('a', 'a.txt')
        utils.copy(os.path.join(self.root_dir, 'a', 'a.txt'),
                   os.path.join(self.root_dir, 'b', 'b.txt'))
        self._exist_dir('b')
        self._exist_file('b', 'b.txt')

    def test_copy_file_create_dirs(self):
        self._create_file('a.txt')
        utils.copy(
            os.path.join(self.root_dir, 'a.txt'),
            os.path.join(self.root_dir, 'b0', 'b1', 'b2', 'b3', 'b.txt'))
        self._exist_dir('b0')
        self._exist_dir('b0', 'b1')
        self._exist_dir('b0', 'b1', 'b2')
        self._exist_dir('b0', 'b1', 'b2', 'b3')
        self._exist_file('b0', 'b1', 'b2', 'b3', 'b.txt')

    def test_copy_dir_same_path(self):
        self._create_dir('a')
        self._create_file('a', 'a.txt')
        utils.copy(os.path.join(self.root_dir, 'a'),
                   os.path.join(self.root_dir, 'b'))
        self._exist_dir('b')
        self._exist_file('b', 'a.txt')

    def test_copy_dir_different_path(self):
        self._create_dir('a0')
        self._create_dir('a0', 'a1')
        self._create_file('a0', 'a1', 'a.txt')
        self._create_dir('b0')
        utils.copy(os.path.join(self.root_dir, 'a0', 'a1'),
                   os.path.join(self.root_dir, 'b0', 'b1'))
        self._exist_dir('b0', 'b1')
        self._exist_file('b0', 'b1', 'a.txt')

    def test_copy_dir_create_dirs(self):
        self._create_dir('a')
        self._create_file('a', 'a.txt')
        utils.copy(os.path.join(self.root_dir, 'a'),
                   os.path.join(self.root_dir, 'b0', 'b1', 'b2', 'b3', 'b'))
        self._exist_dir('b0')
        self._exist_dir('b0', 'b1')
        self._exist_dir('b0', 'b1', 'b2')
        self._exist_dir('b0', 'b1', 'b2', 'b3')
        self._exist_dir('b0', 'b1', 'b2', 'b3', 'b')
        self._exist_file('b0', 'b1', 'b2', 'b3', 'b', 'a.txt')


class TestDateFormatter(unittest.TestCase):
    '''Tests that the output of DateFormatter jinja filter is same as
    utils.strftime'''

    def setUp(self):
        # prepare a temp content and output folder
        self.temp_content = mkdtemp(prefix='pelicantests.')
        self.temp_output = mkdtemp(prefix='pelicantests.')

        # prepare a template file
        template_dir = os.path.join(self.temp_content, 'template')
        template_path = os.path.join(template_dir, 'source.html')
        os.makedirs(template_dir)
        with open(template_path, 'w') as template_file:
            template_file.write('date = {{ date|strftime("%A, %d %B %Y") }}')
        self.date = utils.SafeDatetime(2012, 8, 29)

    def tearDown(self):
        shutil.rmtree(self.temp_content)
        shutil.rmtree(self.temp_output)
        # reset locale to default
        locale.setlocale(locale.LC_ALL, '')

    @unittest.skipUnless(locale_available('fr_FR.UTF-8') or
                         locale_available('French'),
                         'French locale needed')
    def test_french_strftime(self):
        # This test tries to reproduce an issue that
        # occurred with python3.3 under macos10 only
        if platform == 'win32':
            locale.setlocale(locale.LC_ALL, 'French')
        else:
            locale.setlocale(locale.LC_ALL, 'fr_FR.UTF-8')
        date = utils.SafeDatetime(2014, 8, 14)
        # we compare the lower() dates since macos10 returns
        # "Jeudi" for %A whereas linux reports "jeudi"
        self.assertEqual(
            'jeudi, 14 août 2014',
            utils.strftime(date, date_format="%A, %d %B %Y").lower())
        df = utils.DateFormatter()
        self.assertEqual(
            'jeudi, 14 août 2014',
            df(date, date_format="%A, %d %B %Y").lower())
        # Let us now set the global locale to C:
        locale.setlocale(locale.LC_ALL, 'C')
        # DateFormatter should still work as expected
        # since it is the whole point of DateFormatter
        # (This is where pre-2014/4/15 code fails on macos10)
        df_date = df(date, date_format="%A, %d %B %Y").lower()
        self.assertEqual('jeudi, 14 août 2014', df_date)

    @unittest.skipUnless(locale_available('fr_FR.UTF-8') or
                         locale_available('French'),
                         'French locale needed')
    def test_french_locale(self):
        if platform == 'win32':
            locale_string = 'French'
        else:
            locale_string = 'fr_FR.UTF-8'
        settings = read_settings(
            override={
                'LOCALE': locale_string,
                'TEMPLATE_PAGES': {
                    'template/source.html': 'generated/file.html'
                }
            })

        generator = TemplatePagesGenerator(
            {'date': self.date}, settings,
            self.temp_content, '', self.temp_output)
        generator.env.filters.update({'strftime': utils.DateFormatter()})

        writer = Writer(self.temp_output, settings=settings)
        generator.generate_output(writer)

        output_path = os.path.join(
            self.temp_output, 'generated', 'file.html')

        # output file has been generated
        self.assertTrue(os.path.exists(output_path))

        # output content is correct
        with utils.pelican_open(output_path) as output_file:
            self.assertEqual(output_file,
                             utils.strftime(self.date, 'date = %A, %d %B %Y'))

    @unittest.skipUnless(locale_available('tr_TR.UTF-8') or
                         locale_available('Turkish'),
                         'Turkish locale needed')
    def test_turkish_locale(self):
        if platform == 'win32':
            locale_string = 'Turkish'
        else:
            locale_string = 'tr_TR.UTF-8'
        settings = read_settings(
            override={
                'LOCALE': locale_string,
                'TEMPLATE_PAGES': {
                    'template/source.html': 'generated/file.html'
                }
            })

        generator = TemplatePagesGenerator(
            {'date': self.date}, settings,
            self.temp_content, '', self.temp_output)
        generator.env.filters.update({'strftime': utils.DateFormatter()})

        writer = Writer(self.temp_output, settings=settings)
        generator.generate_output(writer)

        output_path = os.path.join(
            self.temp_output, 'generated', 'file.html')

        # output file has been generated
        self.assertTrue(os.path.exists(output_path))

        # output content is correct
        with utils.pelican_open(output_path) as output_file:
            self.assertEqual(output_file,
                             utils.strftime(self.date, 'date = %A, %d %B %Y'))


class TestSanitisedJoin(unittest.TestCase):
    def test_detect_parent_breakout(self):
        with self.assertRaisesRegex(
                RuntimeError,
                "Attempted to break out of output directory to "
                "(.*?:)?/foo/test"):  # (.*?:)? accounts for Windows root
            utils.sanitised_join(
                "/foo/bar",
                "../test"
            )

    def test_detect_root_breakout(self):
        with self.assertRaisesRegex(
                RuntimeError,
                "Attempted to break out of output directory to "
                "(.*?:)?/test"):  # (.*?:)? accounts for Windows root
            utils.sanitised_join(
                "/foo/bar",
                "/test"
            )

    def test_pass_deep_subpaths(self):
        self.assertEqual(
            utils.sanitised_join(
                "/foo/bar",
                "test"
            ),
            utils.posixize_path(
                os.path.abspath(os.path.join("/foo/bar", "test")))
        )


class TestMemoized(unittest.TestCase):
    def test_memoized(self):
        class Container:
            def _get(self, key):
                pass

            @utils.memoized
            def get(self, key):
                return self._get(key)

        container = Container()

        with unittest.mock.patch.object(
                container, "_get", side_effect=lambda x: x
        ) as get_mock:
            self.assertEqual("foo", container.get("foo"))
            get_mock.assert_called_once_with("foo")

            get_mock.reset_mock()
            self.assertEqual("foo", container.get("foo"))
            get_mock.assert_not_called()

            self.assertEqual("bar", container.get("bar"))
            get_mock.assert_called_once_with("bar")

            get_mock.reset_mock()
            container.get.cache.clear()
            self.assertEqual("bar", container.get("bar"))
            get_mock.assert_called_once_with("bar")