mirror of
https://github.com/django/django.git
synced 2024-11-18 15:34:16 +00:00
86 lines
2.5 KiB
Python
86 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
from unittest import TestCase
|
|
|
|
from django.template import Context, Variable, VariableDoesNotExist
|
|
from django.template.context import RenderContext
|
|
|
|
|
|
class ContextTests(TestCase):
|
|
def test_context(self):
|
|
c = Context({"a": 1, "b": "xyzzy"})
|
|
self.assertEqual(c["a"], 1)
|
|
self.assertEqual(c.push(), {})
|
|
c["a"] = 2
|
|
self.assertEqual(c["a"], 2)
|
|
self.assertEqual(c.get("a"), 2)
|
|
self.assertEqual(c.pop(), {"a": 2})
|
|
self.assertEqual(c["a"], 1)
|
|
self.assertEqual(c.get("foo", 42), 42)
|
|
|
|
with c.push():
|
|
c['a'] = 2
|
|
self.assertEqual(c['a'], 2)
|
|
self.assertEqual(c['a'], 1)
|
|
|
|
with c.push(a=3):
|
|
self.assertEqual(c['a'], 3)
|
|
self.assertEqual(c['a'], 1)
|
|
|
|
def test_resolve_on_context_method(self):
|
|
# Regression test for #17778
|
|
empty_context = Context()
|
|
self.assertRaises(VariableDoesNotExist,
|
|
Variable('no_such_variable').resolve, empty_context)
|
|
self.assertRaises(VariableDoesNotExist,
|
|
Variable('new').resolve, empty_context)
|
|
self.assertEqual(Variable('new').resolve(Context({'new': 'foo'})), 'foo')
|
|
|
|
def test_render_context(self):
|
|
test_context = RenderContext({'fruit': 'papaya'})
|
|
|
|
# Test that push() limits access to the topmost dict
|
|
test_context.push()
|
|
|
|
test_context['vegetable'] = 'artichoke'
|
|
self.assertEqual(list(test_context), ['vegetable'])
|
|
|
|
self.assertNotIn('fruit', test_context)
|
|
with self.assertRaises(KeyError):
|
|
test_context['fruit']
|
|
self.assertIsNone(test_context.get('fruit'))
|
|
|
|
def test_flatten_context(self):
|
|
a = Context()
|
|
a.update({'a': 2})
|
|
a.update({'b': 4})
|
|
a.update({'c': 8})
|
|
|
|
self.assertEqual(a.flatten(), {
|
|
'False': False, 'None': None, 'True': True,
|
|
'a': 2, 'b': 4, 'c': 8
|
|
})
|
|
|
|
def test_context_comparable(self):
|
|
test_data = {'x': 'y', 'v': 'z', 'd': {'o': object, 'a': 'b'}}
|
|
|
|
self.assertEqual(Context(test_data), Context(test_data))
|
|
|
|
# Regression test for #21765
|
|
a = Context()
|
|
b = Context()
|
|
self.assertEqual(a, b)
|
|
|
|
# update only a
|
|
a.update({'a': 1})
|
|
self.assertNotEqual(a, b)
|
|
|
|
# update both to check regression
|
|
a.update({'c': 3})
|
|
b.update({'c': 3})
|
|
self.assertNotEqual(a, b)
|
|
|
|
# make contexts equals again
|
|
b.update({'a': 1})
|
|
self.assertEqual(a, b)
|