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# -*- coding: utf-8 -*-
"""
jinja2.testsuite.utils
~~~~~~~~~~~~~~~~~~~~~~
Tests utilities jinja uses.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
"""
import gc
import unittest
import pickle
from jinja2.testsuite import JinjaTestCase
from jinja2.utils import LRUCache, escape, object_type_repr
class LRUCacheTestCase(JinjaTestCase):
def test_simple(self):
d = LRUCache(3)
d["a"] = 1
d["b"] = 2
d["c"] = 3
d["a"]
d["d"] = 4
assert len(d) == 3
assert 'a' in d and 'c' in d and 'd' in d and 'b' not in d
def test_pickleable(self):
cache = LRUCache(2)
cache["foo"] = 42
cache["bar"] = 23
cache["foo"]
for protocol in range(3):
copy = pickle.loads(pickle.dumps(cache, protocol))
assert copy.capacity == cache.capacity
assert copy._mapping == cache._mapping
assert copy._queue == cache._queue
class HelpersTestCase(JinjaTestCase):
def test_object_type_repr(self):
class X(object):
pass
self.assert_equal(object_type_repr(42), 'int object')
self.assert_equal(object_type_repr([]), 'list object')
self.assert_equal(object_type_repr(X()),
'jinja2.testsuite.utils.X object')
self.assert_equal(object_type_repr(None), 'None')
self.assert_equal(object_type_repr(Ellipsis), 'Ellipsis')
class MarkupLeakTestCase(JinjaTestCase):
def test_markup_leaks(self):
counts = set()
for count in range(20):
for item in range(1000):
escape("foo")
escape("<foo>")
escape(u"foo")
escape(u"<foo>")
counts.add(len(gc.get_objects()))
assert len(counts) == 1, 'ouch, c extension seems to leak objects'
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(LRUCacheTestCase))
suite.addTest(unittest.makeSuite(HelpersTestCase))
# this test only tests the c extension
if not hasattr(escape, 'func_code'):
suite.addTest(unittest.makeSuite(MarkupLeakTestCase))
return suite
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