# -*- coding: utf-8 -*-

"""

Tests for :module:`pagure.lib.encoding_utils`.

"""

import chardet

import os

import unittest

import sys

sys.path.insert(0, os.path.join(os.path.dirname(

    os.path.abspath(__file__)), '..'))

from pagure.lib import encoding_utils

class TestGuessEncoding(unittest.TestCase):

    def test_guess_encoding_ascii(self):

        """

        Assert when ascii-only data is provided ascii is the guessed encoding.

        """

        data = u'Twas bryllyg, and the slythy toves did gyre and gymble'

        result = encoding_utils.guess_encoding(data.encode('ascii'))

        self.assertEqual(result, 'ascii')

    def test_guess_encoding_favor_utf_8(self):

        """

        Test that strings that could be UTF-8 or ISO-8859-2 result in UTF-8.

        """

        data = u'Šabata'.encode('utf-8')

        result = encoding_utils.guess_encoding(data)

        chardet_result = chardet.detect(data)

        self.assertEqual(result, 'utf-8')

        self.assertEqual(chardet_result['encoding'], 'ISO-8859-2')

    def test_guess_encoding_no_data(self):

        """ Test encoding_utils.guess_encoding() with an empty string """

        result = encoding_utils.guess_encoding(u''.encode('utf-8'))

        self.assertEqual(result, 'ascii')

class TestGuessEncodings(unittest.TestCase):

    def test_guess_encodings(self):

        """ Test the encoding_utils.guess_encodings() method. """

        data = u'Šabata'.encode('utf-8')

        result = encoding_utils.guess_encodings(data)

        chardet_result = chardet.detect(data)

        self.assertEqual(

            [encoding.encoding for encoding in result],

            ['utf-8', 'ISO-8859-2', 'windows-1252'])

        self.assertEqual(chardet_result['encoding'], 'ISO-8859-2')

    def test_guess_encodings_no_data(self):

        """ Test encoding_utils.guess_encodings() with an emtpy string """

        result = encoding_utils.guess_encodings(u''.encode('utf-8'))

        self.assertEqual(

            [encoding.encoding for encoding in result],

            ['ascii'])

class TestDecode(unittest.TestCase):

    def test_decode(self):

        """ Test encoding_utils.decode() """

        data = u'Šabata'

        self.assertEqual(data, encoding_utils.decode(data.encode('utf-8')))

if __name__ == '__main__':

    unittest.main(verbosity=2)