import unittest
from urllib.error import HTTPError, URLError
from test_update_regex import TestUpdateRegex
from webpicdownloader.util.UpdateUtils import fetch_version, is_new_version_available

class TestUpdateUtils(unittest.TestCase):
    """
    Test Class for Update Utils
    <!> can not be executed directly <!>

    * regex -> use UpdateRegex unittest regex.
    * good_url -> use a permalink VERSION file.
    * bad_url -> bad link that point a 404 error.
    * bad_version -> use a permalink VERSION file for wich version format is bad.
    """
    regex = TestUpdateRegex.regex
    good_url = 'https://git.endmove.eu/EndMove/WebPicDownloader/raw/commit/6b26b89c6901841faaa09154c185d202223492c2/VERSION'
    bad_url = 'https://git.endmove.eu/EndMove/WebPicDownloader/raw/commit/bad-commit/VERSION'
    bad_version = 'https://git.endmove.eu/EndMove/WebPicDownloader/src/commit/6b26b89c6901841faaa09154c185d202223492c2/app_version_file.txt'
    
    def test_fetch_version__good_url(self):
        self.assertTrue(fetch_version(self.good_url) == '1.0.0')
    
    def test_fetch_version__bad_url(self):
        self.assertRaises(HTTPError, lambda: fetch_version(self.bad_url))
        self.assertRaises(URLError, lambda: fetch_version('https://bad'))
        self.assertRaises(ValueError, lambda: fetch_version('bad'))

    def test_is_new_version_available__new_version_available(self):
        self.assertTrue(is_new_version_available('0.0.0', self.good_url, self.regex))
        self.assertTrue(is_new_version_available('0.48.0', self.good_url, self.regex))
        self.assertTrue(is_new_version_available('0.48.14', self.good_url, self.regex))
        self.assertTrue(is_new_version_available('5.48.14', self.good_url, self.regex))
    
    def test_is_new_version_available__no_new_version_available(self):
        self.assertFalse(is_new_version_available('1.0.0', self.good_url, self.regex))

    def test_is_new_version_available__bad_version(self):
        self.assertRaises(ValueError, lambda: is_new_version_available('1.0.0', self.bad_version, self.regex))

    def test_is_new_version_available__bad_url(self):
        self.assertRaises(HTTPError, lambda: is_new_version_available('1.0.0', self.bad_url, self.regex))