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# -*- coding: utf-8 -*-
"""
jinja2.testsuite.ext
~~~~~~~~~~~~~~~~~~~~
Tests for the extensions.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
"""
import re
import unittest
from jinja2.testsuite import JinjaTestCase, filesystem_loader
from jinja2 import Environment, DictLoader, contextfunction, nodes
from jinja2.exceptions import TemplateAssertionError
from jinja2.ext import Extension
from jinja2.lexer import Token, count_newlines
from jinja2.utils import next
# 2.x / 3.x
try:
from io import BytesIO
except ImportError:
from StringIO import StringIO as BytesIO
importable_object = 23
_gettext_re = re.compile(r'_\((.*?)\)(?s)')
templates = {
'master.html': '<title>{{ page_title|default(_("missing")) }}</title>'
'{% block body %}{% endblock %}',
'child.html': '{% extends "master.html" %}{% block body %}'
'{% trans %}watch out{% endtrans %}{% endblock %}',
'plural.html': '{% trans user_count %}One user online{% pluralize %}'
'{{ user_count }} users online{% endtrans %}',
'stringformat.html': '{{ _("User: %d")|format(user_count) }}'
}
languages = {
'de': {
'missing': 'fehlend',
'watch out': 'pass auf',
'One user online': 'Ein Benutzer online',
'%(user_count)s users online': '%(user_count)s Benutzer online',
'User: %d': 'Benutzer: %d'
}
}
@contextfunction
def gettext(context, string):
language = context.get('LANGUAGE', 'en')
return languages.get(language, {}).get(string, string)
@contextfunction
def ngettext(context, s, p, n):
language = context.get('LANGUAGE', 'en')
if n != 1:
return languages.get(language, {}).get(p, p)
return languages.get(language, {}).get(s, s)
i18n_env = Environment(
loader=DictLoader(templates),
extensions=['jinja2.ext.i18n']
)
i18n_env.globals.update({
'_': gettext,
'gettext': gettext,
'ngettext': ngettext
})
class TestExtension(Extension):
tags = set(['test'])
ext_attr = 42
def parse(self, parser):
return nodes.Output([self.call_method('_dump', [
nodes.EnvironmentAttribute('sandboxed'),
self.attr('ext_attr'),
nodes.ImportedName(__name__ + '.importable_object'),
nodes.ContextReference()
])]).set_lineno(next(parser.stream).lineno)
def _dump(self, sandboxed, ext_attr, imported_object, context):
return '%s|%s|%s|%s' % (
sandboxed,
ext_attr,
imported_object,
context.blocks
)
class PreprocessorExtension(Extension):
def preprocess(self, source, name, filename=None):
return source.replace('[[TEST]]', '({{ foo }})')
class StreamFilterExtension(Extension):
def filter_stream(self, stream):
for token in stream:
if token.type == 'data':
for t in self.interpolate(token):
yield t
else:
yield token
def interpolate(self, token):
pos = 0
end = len(token.value)
lineno = token.lineno
while 1:
match = _gettext_re.search(token.value, pos)
if match is None:
break
value = token.value[pos:match.start()]
if value:
yield Token(lineno, 'data', value)
lineno += count_newlines(token.value)
yield Token(lineno, 'variable_begin', None)
yield Token(lineno, 'name', 'gettext')
yield Token(lineno, 'lparen', None)
yield Token(lineno, 'string', match.group(1))
yield Token(lineno, 'rparen', None)
yield Token(lineno, 'variable_end', None)
pos = match.end()
if pos < end:
yield Token(lineno, 'data', token.value[pos:])
class ExtensionsTestCase(JinjaTestCase):
def test_loop_controls(self):
env = Environment(extensions=['jinja2.ext.loopcontrols'])
tmpl = env.from_string('''
{%- for item in [1, 2, 3, 4] %}
{%- if item % 2 == 0 %}{% continue %}{% endif -%}
{{ item }}
{%- endfor %}''')
assert tmpl.render() == '13'
tmpl = env.from_string('''
{%- for item in [1, 2, 3, 4] %}
{%- if item > 2 %}{% break %}{% endif -%}
{{ item }}
{%- endfor %}''')
assert tmpl.render() == '12'
def test_do(self):
env = Environment(extensions=['jinja2.ext.do'])
tmpl = env.from_string('''
{%- set items = [] %}
{%- for char in "foo" %}
{%- do items.append(loop.index0 ~ char) %}
{%- endfor %}{{ items|join(', ') }}''')
assert tmpl.render() == '0f, 1o, 2o'
def test_with(self):
env = Environment(extensions=['jinja2.ext.with_'])
tmpl = env.from_string('''\
{% with a=42, b=23 -%}
{{ a }} = {{ b }}
{% endwith -%}
{{ a }} = {{ b }}\
''')
assert [x.strip() for x in tmpl.render(a=1, b=2).splitlines()] \
== ['42 = 23', '1 = 2']
def test_extension_nodes(self):
env = Environment(extensions=[TestExtension])
tmpl = env.from_string('{% test %}')
assert tmpl.render() == 'False|42|23|{}'
def test_identifier(self):
assert TestExtension.identifier == __name__ + '.TestExtension'
def test_rebinding(self):
original = Environment(extensions=[TestExtension])
overlay = original.overlay()
for env in original, overlay:
for ext in env.extensions.itervalues():
assert ext.environment is env
def test_preprocessor_extension(self):
env = Environment(extensions=[PreprocessorExtension])
tmpl = env.from_string('{[[TEST]]}')
assert tmpl.render(foo=42) == '{(42)}'
def test_streamfilter_extension(self):
env = Environment(extensions=[StreamFilterExtension])
env.globals['gettext'] = lambda x: x.upper()
tmpl = env.from_string('Foo _(bar) Baz')
out = tmpl.render()
assert out == 'Foo BAR Baz'
class InternationalizationTestCase(JinjaTestCase):
def test_trans(self):
tmpl = i18n_env.get_template('child.html')
assert tmpl.render(LANGUAGE='de') == '<title>fehlend</title>pass auf'
def test_trans_plural(self):
tmpl = i18n_env.get_template('plural.html')
assert tmpl.render(LANGUAGE='de', user_count=1) == 'Ein Benutzer online'
assert tmpl.render(LANGUAGE='de', user_count=2) == '2 Benutzer online'
def test_complex_plural(self):
tmpl = i18n_env.from_string('{% trans foo=42, count=2 %}{{ count }} item{% '
'pluralize count %}{{ count }} items{% endtrans %}')
assert tmpl.render() == '2 items'
self.assert_raises(TemplateAssertionError, i18n_env.from_string,
'{% trans foo %}...{% pluralize bar %}...{% endtrans %}')
def test_trans_stringformatting(self):
tmpl = i18n_env.get_template('stringformat.html')
assert tmpl.render(LANGUAGE='de', user_count=5) == 'Benutzer: 5'
def test_extract(self):
from jinja2.ext import babel_extract
source = BytesIO('''
{{ gettext('Hello World') }}
{% trans %}Hello World{% endtrans %}
{% trans %}{{ users }} user{% pluralize %}{{ users }} users{% endtrans %}
'''.encode('ascii')) # make python 3 happy
assert list(babel_extract(source, ('gettext', 'ngettext', '_'), [], {})) == [
(2, 'gettext', u'Hello World', []),
(3, 'gettext', u'Hello World', []),
(4, 'ngettext', (u'%(users)s user', u'%(users)s users', None), [])
]
def test_comment_extract(self):
from jinja2.ext import babel_extract
source = BytesIO('''
{# trans first #}
{{ gettext('Hello World') }}
{% trans %}Hello World{% endtrans %}{# trans second #}
{#: third #}
{% trans %}{{ users }} user{% pluralize %}{{ users }} users{% endtrans %}
'''.encode('utf-8')) # make python 3 happy
assert list(babel_extract(source, ('gettext', 'ngettext', '_'), ['trans', ':'], {})) == [
(3, 'gettext', u'Hello World', ['first']),
(4, 'gettext', u'Hello World', ['second']),
(6, 'ngettext', (u'%(users)s user', u'%(users)s users', None), ['third'])
]
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(ExtensionsTestCase))
suite.addTest(unittest.makeSuite(InternationalizationTestCase))
return suite
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