interwiki_link_tests.py

#!/usr/bin/env python3
"""Test Interwiki Link functionality."""
#
# (C) Pywikibot team, 2014-2022
#
# Distributed under the terms of the MIT license.
#
from __future__ import annotations

from contextlib import suppress

from pywikibot import config
from pywikibot.exceptions import InvalidTitleError
from pywikibot.page import Link
from tests.aspects import AlteredDefaultSiteTestCase as LinkTestCase
from tests.aspects import TestCase, unittest


class TestPartiallyQualifiedLinkDifferentCodeParser(LinkTestCase):

    """Tests for interwiki links to local sites."""

    family = 'wikipedia'
    code = 'en'
    cached = True

    def test_partially_qualified_NS0_family(self):
        """Test that Link uses config.family for namespace 0."""
        config.mylang = 'de'
        config.family = 'wikipedia'
        link = Link('en:Main Page')
        link.parse()
        self.assertEqual(link.site, self.get_site())
        self.assertEqual(link.title, 'Main Page')
        self.assertEqual(link.namespace, 0)

    def test_partially_qualified_NS1_family(self):
        """Test that Link uses config.family for namespace 1."""
        config.mylang = 'de'
        config.family = 'wikipedia'
        link = Link('en:Talk:Main Page')
        link.parse()
        self.assertEqual(link.site, self.get_site())
        self.assertEqual(link.title, 'Main Page')
        self.assertEqual(link.namespace, 1)


class TestInterwikiLinksToNonLocalSites(TestCase):

    """Tests for interwiki links to non local sites."""

    sites = {
        'wp': {
            'family': 'wikipedia',
            'code': 'en'
        },
        'tw': {
            'family': 'i18n',
            'code': 'i18n'
        }
    }

    def test_direct_non_local(self):
        """Test translatewiki:Main Page on English Wikipedia."""
        link = Link('translatewiki:Main Page', self.get_site('wp'))
        link.parse()
        self.assertEqual(link.site, self.get_site('tw'))
        self.assertEqual(link.title, 'Main Page')
        self.assertEqual(link.namespace, 0)

    def test_indirect_non_local(self):
        """Test en:translatewiki:Main Page on English Wikipedia."""
        link = Link('en:translatewiki:Main Page', self.get_site('wp'))
        link.parse()
        self.assertEqual(link.site, self.get_site('tw'))
        self.assertEqual(link.title, 'Main Page')
        self.assertEqual(link.namespace, 0)

    def test_via_local_non_local(self):
        """Test de:translatewiki:Main Page on English Wikipedia."""
        link = Link('de:translatewiki:Main Page', self.get_site('wp'))
        with self.assertRaisesRegex(
                InvalidTitleError,
                'de:translatewiki:Main Page links to a non local '
                'site i18n:i18n '
                'via an interwiki link to wikipedia:de'):
            link.parse()


if __name__ == '__main__':
    with suppress(SystemExit):
        unittest.main()