from os.path import dirname, abspath, join

from pelican.settings import read_settings, configure_settings, _DEFAULT_CONFIG
from .support import unittest


class TestSettingsConfiguration(unittest.TestCase):
    """Provided a file, it should read it, replace the default values,
    append new values to the settings (if any), and apply basic settings
    optimizations.
    """
    def setUp(self):
        self.PATH = abspath(dirname(__file__))
        default_conf = join(self.PATH, 'default_conf.py')
        self.settings = read_settings(default_conf)

    def test_overwrite_existing_settings(self):
        self.assertEqual(self.settings.get('SITENAME'), u"Alexis' log")
        self.assertEqual(self.settings.get('SITEURL'),
                'http://blog.notmyidea.org')

    def test_keep_default_settings(self):
        """keep default settings if not defined"""
        self.assertEqual(self.settings.get('DEFAULT_CATEGORY'),
            _DEFAULT_CONFIG['DEFAULT_CATEGORY'])

    def test_dont_copy_small_keys(self):
        """do not copy keys not in caps."""
        self.assertNotIn('foobar', self.settings)

    def test_read_empty_settings(self):
        """providing no file should return the default values."""
        settings = read_settings(None)
        self.assertDictEqual(settings, _DEFAULT_CONFIG)

    def test_configure_settings(self):
        """Manipulations to settings should be applied correctly."""

        # SITEURL should not have a trailing slash
        settings = {'SITEURL': 'http://blog.notmyidea.org/', 'LOCALE': ''}
        configure_settings(settings)
        self.assertEqual(settings['SITEURL'], 'http://blog.notmyidea.org')

        # FEED_DOMAIN, if undefined, should default to SITEURL
        settings = {'SITEURL': 'http://blog.notmyidea.org', 'LOCALE': ''}
        configure_settings(settings)
        self.assertEqual(settings['FEED_DOMAIN'], 'http://blog.notmyidea.org')

        settings = {'FEED_DOMAIN': 'http://feeds.example.com', 'LOCALE': ''}
        configure_settings(settings)
        self.assertEqual(settings['FEED_DOMAIN'], 'http://feeds.example.com')