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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
# -*- coding: utf-8 -*-
"""
jinja2.testsuite.api
~~~~~~~~~~~~~~~~~~~~
Tests the public API and related stuff.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
"""
import unittest
from jinja2.testsuite import JinjaTestCase
from jinja2 import Environment, Undefined, DebugUndefined, \
StrictUndefined, UndefinedError, meta, \
is_undefined, Template, DictLoader
from jinja2.utils import Cycler
env = Environment()
class ExtendedAPITestCase(JinjaTestCase):
def test_item_and_attribute(self):
from jinja2.sandbox import SandboxedEnvironment
for env in Environment(), SandboxedEnvironment():
# the |list is necessary for python3
tmpl = env.from_string('{{ foo.items()|list }}')
assert tmpl.render(foo={'items': 42}) == "[('items', 42)]"
tmpl = env.from_string('{{ foo|attr("items")()|list }}')
assert tmpl.render(foo={'items': 42}) == "[('items', 42)]"
tmpl = env.from_string('{{ foo["items"] }}')
assert tmpl.render(foo={'items': 42}) == '42'
def test_finalizer(self):
def finalize_none_empty(value):
if value is None:
value = u''
return value
env = Environment(finalize=finalize_none_empty)
tmpl = env.from_string('{% for item in seq %}|{{ item }}{% endfor %}')
assert tmpl.render(seq=(None, 1, "foo")) == '||1|foo'
tmpl = env.from_string('<{{ none }}>')
assert tmpl.render() == '<>'
def test_cycler(self):
items = 1, 2, 3
c = Cycler(*items)
for item in items + items:
assert c.current == item
assert c.next() == item
c.next()
assert c.current == 2
c.reset()
assert c.current == 1
def test_expressions(self):
expr = env.compile_expression("foo")
assert expr() is None
assert expr(foo=42) == 42
expr2 = env.compile_expression("foo", undefined_to_none=False)
assert is_undefined(expr2())
expr = env.compile_expression("42 + foo")
assert expr(foo=42) == 84
def test_template_passthrough(self):
t = Template('Content')
assert env.get_template(t) is t
assert env.select_template([t]) is t
assert env.get_or_select_template([t]) is t
assert env.get_or_select_template(t) is t
def test_autoescape_autoselect(self):
def select_autoescape(name):
if name is None or '.' not in name:
return False
return name.endswith('.html')
env = Environment(autoescape=select_autoescape,
loader=DictLoader({
'test.txt': '{{ foo }}',
'test.html': '{{ foo }}'
}))
t = env.get_template('test.txt')
assert t.render(foo='<foo>') == '<foo>'
t = env.get_template('test.html')
assert t.render(foo='<foo>') == '<foo>'
t = env.from_string('{{ foo }}')
assert t.render(foo='<foo>') == '<foo>'
class MetaTestCase(JinjaTestCase):
def test_find_undeclared_variables(self):
ast = env.parse('{% set foo = 42 %}{{ bar + foo }}')
x = meta.find_undeclared_variables(ast)
assert x == set(['bar'])
ast = env.parse('{% set foo = 42 %}{{ bar + foo }}'
'{% macro meh(x) %}{{ x }}{% endmacro %}'
'{% for item in seq %}{{ muh(item) + meh(seq) }}{% endfor %}')
x = meta.find_undeclared_variables(ast)
assert x == set(['bar', 'seq', 'muh'])
def test_find_refererenced_templates(self):
ast = env.parse('{% extends "layout.html" %}{% include helper %}')
i = meta.find_referenced_templates(ast)
assert i.next() == 'layout.html'
assert i.next() is None
assert list(i) == []
ast = env.parse('{% extends "layout.html" %}'
'{% from "test.html" import a, b as c %}'
'{% import "meh.html" as meh %}'
'{% include "muh.html" %}')
i = meta.find_referenced_templates(ast)
assert list(i) == ['layout.html', 'test.html', 'meh.html', 'muh.html']
def test_find_included_templates(self):
ast = env.parse('{% include ["foo.html", "bar.html"] %}')
i = meta.find_referenced_templates(ast)
assert list(i) == ['foo.html', 'bar.html']
ast = env.parse('{% include ("foo.html", "bar.html") %}')
i = meta.find_referenced_templates(ast)
assert list(i) == ['foo.html', 'bar.html']
ast = env.parse('{% include ["foo.html", "bar.html", foo] %}')
i = meta.find_referenced_templates(ast)
assert list(i) == ['foo.html', 'bar.html', None]
ast = env.parse('{% include ("foo.html", "bar.html", foo) %}')
i = meta.find_referenced_templates(ast)
assert list(i) == ['foo.html', 'bar.html', None]
class StreamingTestCase(JinjaTestCase):
def test_basic_streaming(self):
tmpl = env.from_string("<ul>{% for item in seq %}<li>{{ loop.index "
"}} - {{ item }}</li>{%- endfor %}</ul>")
stream = tmpl.stream(seq=range(4))
self.assert_equal(stream.next(), '<ul>')
self.assert_equal(stream.next(), '<li>1 - 0</li>')
self.assert_equal(stream.next(), '<li>2 - 1</li>')
self.assert_equal(stream.next(), '<li>3 - 2</li>')
self.assert_equal(stream.next(), '<li>4 - 3</li>')
self.assert_equal(stream.next(), '</ul>')
def test_buffered_streaming(self):
tmpl = env.from_string("<ul>{% for item in seq %}<li>{{ loop.index "
"}} - {{ item }}</li>{%- endfor %}</ul>")
stream = tmpl.stream(seq=range(4))
stream.enable_buffering(size=3)
self.assert_equal(stream.next(), u'<ul><li>1 - 0</li><li>2 - 1</li>')
self.assert_equal(stream.next(), u'<li>3 - 2</li><li>4 - 3</li></ul>')
def test_streaming_behavior(self):
tmpl = env.from_string("")
stream = tmpl.stream()
assert not stream.buffered
stream.enable_buffering(20)
assert stream.buffered
stream.disable_buffering()
assert not stream.buffered
class UndefinedTestCase(JinjaTestCase):
def test_stopiteration_is_undefined(self):
def test():
raise StopIteration()
t = Template('A{{ test() }}B')
assert t.render(test=test) == 'AB'
t = Template('A{{ test().missingattribute }}B')
self.assert_raises(UndefinedError, t.render, test=test)
def test_undefined_and_special_attributes(self):
try:
Undefined('Foo').__dict__
except AttributeError:
pass
else:
assert False, "Expected actual attribute error"
def test_default_undefined(self):
env = Environment(undefined=Undefined)
self.assert_equal(env.from_string('{{ missing }}').render(), u'')
self.assert_raises(UndefinedError,
env.from_string('{{ missing.attribute }}').render)
self.assert_equal(env.from_string('{{ missing|list }}').render(), '[]')
self.assert_equal(env.from_string('{{ missing is not defined }}').render(), 'True')
self.assert_equal(env.from_string('{{ foo.missing }}').render(foo=42), '')
self.assert_equal(env.from_string('{{ not missing }}').render(), 'True')
def test_debug_undefined(self):
env = Environment(undefined=DebugUndefined)
self.assert_equal(env.from_string('{{ missing }}').render(), '{{ missing }}')
self.assert_raises(UndefinedError,
env.from_string('{{ missing.attribute }}').render)
self.assert_equal(env.from_string('{{ missing|list }}').render(), '[]')
self.assert_equal(env.from_string('{{ missing is not defined }}').render(), 'True')
self.assert_equal(env.from_string('{{ foo.missing }}').render(foo=42),
u"{{ no such element: int object['missing'] }}")
self.assert_equal(env.from_string('{{ not missing }}').render(), 'True')
def test_strict_undefined(self):
env = Environment(undefined=StrictUndefined)
self.assert_raises(UndefinedError, env.from_string('{{ missing }}').render)
self.assert_raises(UndefinedError, env.from_string('{{ missing.attribute }}').render)
self.assert_raises(UndefinedError, env.from_string('{{ missing|list }}').render)
self.assert_equal(env.from_string('{{ missing is not defined }}').render(), 'True')
self.assert_raises(UndefinedError, env.from_string('{{ foo.missing }}').render, foo=42)
self.assert_raises(UndefinedError, env.from_string('{{ not missing }}').render)
def test_indexing_gives_undefined(self):
t = Template("{{ var[42].foo }}")
self.assert_raises(UndefinedError, t.render, var=0)
def test_none_gives_proper_error(self):
try:
Environment().getattr(None, 'split')()
except UndefinedError, e:
assert e.message == "'None' has no attribute 'split'"
else:
assert False, 'expected exception'
def test_object_repr(self):
try:
Undefined(obj=42, name='upper')()
except UndefinedError, e:
assert e.message == "'int object' has no attribute 'upper'"
else:
assert False, 'expected exception'
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(ExtendedAPITestCase))
suite.addTest(unittest.makeSuite(MetaTestCase))
suite.addTest(unittest.makeSuite(StreamingTestCase))
suite.addTest(unittest.makeSuite(UndefinedTestCase))
return suite
|
