1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
from __future__ import unicode_literals
import logging
from django.template import Context, Engine, Variable, VariableDoesNotExist
from django.test import SimpleTestCase
class TestHandler(logging.Handler):
def __init__(self):
super(TestHandler, self).__init__()
self.log_record = None
def emit(self, record):
self.log_record = record
class BaseTemplateLoggingTestCase(SimpleTestCase):
def setUp(self):
self.test_handler = TestHandler()
self.logger = logging.getLogger('django.template')
self.original_level = self.logger.level
self.logger.addHandler(self.test_handler)
self.logger.setLevel(self.loglevel)
def tearDown(self):
self.logger.removeHandler(self.test_handler)
self.logger.level = self.original_level
class VariableResolveLoggingTests(BaseTemplateLoggingTestCase):
loglevel = logging.DEBUG
def test_log_on_variable_does_not_exist_silent(self):
class TestObject(object):
class SilentDoesNotExist(Exception):
silent_variable_failure = True
@property
def template_name(self):
return "template_name"
@property
def template(self):
return Engine().from_string('')
@property
def article(self):
raise TestObject.SilentDoesNotExist("Attribute does not exist.")
def __iter__(self):
return iter(attr for attr in dir(TestObject) if attr[:2] != "__")
def __getitem__(self, item):
return self.__dict__[item]
Variable('article').resolve(TestObject())
self.assertEqual(
self.test_handler.log_record.getMessage(),
"Exception while resolving variable 'article' in template 'template_name'."
)
self.assertIsNotNone(self.test_handler.log_record.exc_info)
raised_exception = self.test_handler.log_record.exc_info[1]
self.assertEqual(str(raised_exception), 'Attribute does not exist.')
def test_log_on_variable_does_not_exist_not_silent(self):
with self.assertRaises(VariableDoesNotExist):
Variable('article.author').resolve({'article': {'section': 'News'}})
self.assertEqual(
self.test_handler.log_record.getMessage(),
"Exception while resolving variable 'author' in template 'unknown'."
)
self.assertIsNotNone(self.test_handler.log_record.exc_info)
raised_exception = self.test_handler.log_record.exc_info[1]
self.assertEqual(
str(raised_exception),
'Failed lookup for key [author] in %r' % ("{%r: %r}" % ('section', 'News'))
)
def test_no_log_when_variable_exists(self):
Variable('article.section').resolve({'article': {'section': 'News'}})
self.assertIsNone(self.test_handler.log_record)
class IncludeNodeLoggingTests(BaseTemplateLoggingTestCase):
loglevel = logging.WARN
@classmethod
def setUpClass(cls):
super(IncludeNodeLoggingTests, cls).setUpClass()
cls.engine = Engine(loaders=[
('django.template.loaders.locmem.Loader', {
'child': '{{ raises_exception }}',
}),
], debug=False)
def error_method():
raise IndexError("some generic exception")
cls.ctx = Context({'raises_exception': error_method})
def test_logs_exceptions_during_rendering_with_debug_disabled(self):
template = self.engine.from_string('{% include "child" %}')
template.name = 'template_name'
self.assertEqual(template.render(self.ctx), '')
self.assertEqual(
self.test_handler.log_record.getMessage(),
"Exception raised while rendering {% include %} for template "
"'template_name'. Empty string rendered instead."
)
self.assertIsNotNone(self.test_handler.log_record.exc_info)
self.assertEqual(self.test_handler.log_record.levelno, logging.WARN)
def test_logs_exceptions_during_rendering_with_no_template_name(self):
template = self.engine.from_string('{% include "child" %}')
self.assertEqual(template.render(self.ctx), '')
self.assertEqual(
self.test_handler.log_record.getMessage(),
"Exception raised while rendering {% include %} for template "
"'unknown'. Empty string rendered instead."
)
self.assertIsNotNone(self.test_handler.log_record.exc_info)
self.assertEqual(self.test_handler.log_record.levelno, logging.WARN)
|