from django.template.defaultfilters import addslashes
from django.test import SimpleTestCase
from django.utils.safestring import mark_safe

from ..utils import setup


class AddslashesTests(SimpleTestCase):

    @setup({'addslashes01': '{% autoescape off %}{{ a|addslashes }} {{ b|addslashes }}{% endautoescape %}'})
    def test_addslashes01(self):
        output = self.engine.render_to_string('addslashes01', {"a": "<a>'", "b": mark_safe("<a>'")})
        self.assertEqual(output, r"<a>\' <a>\'")

    @setup({'addslashes02': '{{ a|addslashes }} {{ b|addslashes }}'})
    def test_addslashes02(self):
        output = self.engine.render_to_string('addslashes02', {"a": "<a>'", "b": mark_safe("<a>'")})
        self.assertEqual(output, r"&lt;a&gt;\&#39; <a>\'")


class FunctionTests(SimpleTestCase):

    def test_quotes(self):
        self.assertEqual(
            addslashes('"double quotes" and \'single quotes\''),
            '\\"double quotes\\" and \\\'single quotes\\\'',
        )

    def test_backslashes(self):
        self.assertEqual(addslashes(r'\ : backslashes, too'), '\\\\ : backslashes, too')

    def test_non_string_input(self):
        self.assertEqual(addslashes(123), '123')