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django/tests/regressiontests/i18n/tests.py

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Fixed #7980 - Improved i18n framework to support locale aware formatting (dates and numbers) and form processing. Thanks to Marc Garcia for working on this during his Google Summer of Code 2009! Additionally fixes #1061, #2203, #3940, #5526, #6449, #6231, #6693, #6783, #9366 and #10891. git-svn-id: http://code.djangoproject.com/svn/django/trunk@11964 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2009-12-23 01:58:49 +08:00
import sys
from django.test import TestCase, client
from django.utils.translation import ugettext, ugettext_lazy, activate, deactivate, gettext_lazy
class TranslationTests(TestCase):
def test_lazy_objects(self):
"""
Format string interpolation should work with *_lazy objects.
"""
s = ugettext_lazy('Add %(name)s')
d = {'name': 'Ringo'}
self.assertEqual(u'Add Ringo', s % d)
activate('de')
self.assertEqual(u'Ringo hinzuf\xfcgen', s % d)
activate('pl')
self.assertEqual(u'Dodaj Ringo', s % d)
deactivate()
# It should be possible to compare *_lazy objects.
s1 = ugettext_lazy('Add %(name)s')
self.assertEqual(True, s == s1)
s2 = gettext_lazy('Add %(name)s')
s3 = gettext_lazy('Add %(name)s')
self.assertEqual(True, s2 == s3)
self.assertEqual(True, s == s2)
s4 = ugettext_lazy('Some other string')
self.assertEqual(False, s == s4)
def test_string_concat(self):
"""
unicode(string_concat(...)) should not raise a TypeError - #4796
"""
import django.utils.translation
self.assertEqual(django.utils.translation, reload(django.utils.translation))
self.assertEqual(u'django', unicode(django.utils.translation.string_concat("dja", "ngo")))
def test_safe_status(self):
"""
Translating a string requiring no auto-escaping shouldn't change the "safe" status.
"""
from django.utils.safestring import mark_safe, SafeString, SafeUnicode
s = mark_safe('Password')
self.assertEqual(SafeString, type(s))
activate('de')
self.assertEqual(SafeUnicode, type(ugettext(s)))
deactivate()
self.assertEqual('aPassword', SafeString('a') + s)
self.assertEqual('Passworda', s + SafeString('a'))
self.assertEqual('Passworda', s + mark_safe('a'))
self.assertEqual('aPassword', mark_safe('a') + s)
self.assertEqual('as', mark_safe('a') + mark_safe('s'))
#self.assertEqual(Password, print s)
def test_maclines(self):
"""
Translations on files with mac or dos end of lines will be converted
to unix eof in .po catalogs, and they have to match when retrieved
"""
from django.utils.translation.trans_real import translation
ca_translation = translation('ca')
ca_translation._catalog[u'Mac\nEOF\n'] = u'Catalan Mac\nEOF\n'
ca_translation._catalog[u'Win\nEOF\n'] = u'Catalan Win\nEOF\n'
activate('ca')
self.assertEqual(u'Catalan Mac\nEOF\n', ugettext(u'Mac\rEOF\r'))
self.assertEqual(u'Catalan Win\nEOF\n', ugettext(u'Win\r\nEOF\r\n'))
deactivate()
def test_dates_and_numbers(self):
"""
Localization of dates and numbers
"""
import datetime
import decimal
from django.conf import settings
from django.utils.formats import get_format, date_format, number_format, localize
from django.utils.numberformat import format
from django import template, forms
from django.forms.extras import SelectDateWidget
old_use_i18n = settings.USE_I18N
old_use_l10n = settings.USE_L10N
old_use_thousand_separator = settings.USE_THOUSAND_SEPARATOR
n = decimal.Decimal('66666.666')
f = 99999.999
d = datetime.date(2009, 12, 31)
dt = datetime.datetime(2009, 12, 31, 20, 50)
ctxt = template.Context({'n': n, 'd': d, 'dt': dt, 'f': f})
# Locale independent
class I18nForm(forms.Form):
decimal_field = forms.DecimalField()
float_field = forms.FloatField()
date_field = forms.DateField()
datetime_field = forms.DateTimeField()
time_field = forms.TimeField()
class SelectDateForm(forms.Form):
date_field = forms.DateField(widget=SelectDateWidget)
settings.USE_L10N = True
settings.USE_THOUSAND_SEPARATOR = False
self.assertEqual(u'66666.66', format(n, decimal_sep='.', decimal_pos=2, grouping=3, thousand_sep=','))
self.assertEqual(u'66666A6', format(n, decimal_sep='A', decimal_pos=1, grouping=1, thousand_sep='B'))
settings.USE_THOUSAND_SEPARATOR = True
self.assertEqual(u'66,666.66', format(n, decimal_sep='.', decimal_pos=2, grouping=3, thousand_sep=','))
self.assertEqual(u'6B6B6B6B6A6', format(n, decimal_sep='A', decimal_pos=1, grouping=1, thousand_sep='B'))
self.assertEqual(u'-66666.6', format(-66666.666, decimal_sep='.', decimal_pos=1))
self.assertEqual(u'-66666.0', format(int('-66666'), decimal_sep='.', decimal_pos=1))
# Catalan locale with format i18n disabled translations will be used, but not formats
settings.USE_L10N = False
activate('ca')
self.assertEqual('N j, Y', get_format('DATE_FORMAT'))
self.assertEqual(0, get_format('FIRST_DAY_OF_WEEK'))
self.assertEqual('.', get_format('DECIMAL_SEPARATOR'))
self.assertEqual(u'des. 31, 2009', date_format(d))
self.assertEqual(u'desembre 2009', date_format(d, 'YEAR_MONTH_FORMAT'))
self.assertEqual(u'12/31/2009 8:50 p.m.', date_format(dt, 'SHORT_DATETIME_FORMAT'))
self.assertEqual('No localizable', localize('No localizable'))
self.assertEqual(decimal.Decimal('66666.666'), localize(n))
self.assertEqual(99999.999, localize(f))
self.assertEqual(datetime.date(2009, 12, 31), localize(d))
self.assertEqual(datetime.datetime(2009, 12, 31, 20, 50), localize(dt))
self.assertEqual(u'66666.666', template.Template('{{ n }}').render(ctxt))
self.assertEqual(u'99999.999', template.Template('{{ f }}').render(ctxt))
self.assertEqual(u'2009-12-31', template.Template('{{ d }}').render(ctxt))
self.assertEqual(u'2009-12-31 20:50:00', template.Template('{{ dt }}').render(ctxt))
self.assertEqual(u'66666.67', template.Template('{{ n|floatformat:2 }}').render(ctxt))
self.assertEqual(u'100000.0', template.Template('{{ f|floatformat }}').render(ctxt))
self.assertEqual(u'12/31/2009', template.Template('{{ d|date:"SHORT_DATE_FORMAT" }}').render(ctxt))
self.assertEqual(u'12/31/2009 8:50 p.m.', template.Template('{{ dt|date:"SHORT_DATETIME_FORMAT" }}').render(ctxt))
form = I18nForm({
'decimal_field': u'66666,666',
'float_field': u'99999,999',
'date_field': u'31/12/2009',
'datetime_field': u'31/12/2009 20:50',
'time_field': u'20:50'
})
self.assertEqual(False, form.is_valid())
self.assertEqual([u'Introdu\xefu un n\xfamero.'], form.errors['float_field'])
self.assertEqual([u'Introdu\xefu un n\xfamero.'], form.errors['decimal_field'])
self.assertEqual([u'Introdu\xefu una data v\xe0lida.'], form.errors['date_field'])
self.assertEqual([u'Introdu\xefu una data/hora v\xe0lides.'], form.errors['datetime_field'])
form2 = SelectDateForm({
'date_field_month': u'12',
'date_field_day': u'31',
'date_field_year': u'2009'
})
self.assertEqual(True, form2.is_valid())
self.assertEqual(datetime.date(2009, 12, 31), form2.cleaned_data['date_field'])
self.assertEqual(u'<select name="mydate_month" id="id_mydate_month">\n<option value="1">gener</option>\n<option value="2">febrer</option>\n<option value="3">mar\xe7</option>\n<option value="4">abril</option>\n<option value="5">maig</option>\n<option value="6">juny</option>\n<option value="7">juliol</option>\n<option value="8">agost</option>\n<option value="9">setembre</option>\n<option value="10">octubre</option>\n<option value="11">novembre</option>\n<option value="12" selected="selected">desembre</option>\n</select>\n<select name="mydate_day" id="id_mydate_day">\n<option value="1">1</option>\n<option value="2">2</option>\n<option value="3">3</option>\n<option value="4">4</option>\n<option value="5">5</option>\n<option value="6">6</option>\n<option value="7">7</option>\n<option value="8">8</option>\n<option value="9">9</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n<option value="24">24</option>\n<option value="25">25</option>\n<option value="26">26</option>\n<option value="27">27</option>\n<option value="28">28</option>\n<option value="29">29</option>\n<option value="30">30</option>\n<option value="31" selected="selected">31</option>\n</select>\n<select name="mydate_year" id="id_mydate_year">\n<option value="2009" selected="selected">2009</option>\n<option value="2010">2010</option>\n<option value="2011">2011</option>\n<option value="2012">2012</option>\n<option value="2013">2013</option>\n<option value="2014">2014</option>\n<option value="2015">2015</option>\n<option value="2016">2016</option>\n<option value="2017">2017</option>\n<option value="2018">2018</option>\n</select>', SelectDateWidget().render('mydate', datetime.date(2009, 12, 31)))
deactivate()
# Catalan locale
settings.USE_L10N = True
activate('ca')
self.assertEqual('j \de F \de Y', get_format('DATE_FORMAT'))
self.assertEqual(1, get_format('FIRST_DAY_OF_WEEK'))
self.assertEqual(',', get_format('DECIMAL_SEPARATOR'))
self.assertEqual(u'31 de desembre de 2009', date_format(d))
self.assertEqual(u'desembre del 2009', date_format(d, 'YEAR_MONTH_FORMAT'))
self.assertEqual(u'31/12/2009 20:50', date_format(dt, 'SHORT_DATETIME_FORMAT'))
self.assertEqual('No localizable', localize('No localizable'))
settings.USE_THOUSAND_SEPARATOR = True
self.assertEqual(u'66.666,666', localize(n))
self.assertEqual(u'99.999,999', localize(f))
settings.USE_THOUSAND_SEPARATOR = False
self.assertEqual(u'66666,666', localize(n))
self.assertEqual(u'99999,999', localize(f))
self.assertEqual(u'31 de desembre de 2009', localize(d))
self.assertEqual(u'31 de desembre de 2009 a les 20:50', localize(dt))
settings.USE_THOUSAND_SEPARATOR = True
self.assertEqual(u'66.666,666', template.Template('{{ n }}').render(ctxt))
self.assertEqual(u'99.999,999', template.Template('{{ f }}').render(ctxt))
settings.USE_THOUSAND_SEPARATOR = False
self.assertEqual(u'66666,666', template.Template('{{ n }}').render(ctxt))
self.assertEqual(u'99999,999', template.Template('{{ f }}').render(ctxt))
self.assertEqual(u'31 de desembre de 2009', template.Template('{{ d }}').render(ctxt))
self.assertEqual(u'31 de desembre de 2009 a les 20:50', template.Template('{{ dt }}').render(ctxt))
self.assertEqual(u'66666,67', template.Template('{{ n|floatformat:2 }}').render(ctxt))
self.assertEqual(u'100000,0', template.Template('{{ f|floatformat }}').render(ctxt))
self.assertEqual(u'31/12/2009', template.Template('{{ d|date:"SHORT_DATE_FORMAT" }}').render(ctxt))
self.assertEqual(u'31/12/2009 20:50', template.Template('{{ dt|date:"SHORT_DATETIME_FORMAT" }}').render(ctxt))
form3 = I18nForm({
'decimal_field': u'66666,666',
'float_field': u'99999,999',
'date_field': u'31/12/2009',
'datetime_field': u'31/12/2009 20:50',
'time_field': u'20:50'
})
self.assertEqual(True, form3.is_valid())
self.assertEqual(decimal.Decimal('66666.666'), form3.cleaned_data['decimal_field'])
self.assertEqual(99999.999, form3.cleaned_data['float_field'])
self.assertEqual(datetime.date(2009, 12, 31), form3.cleaned_data['date_field'])
self.assertEqual(datetime.datetime(2009, 12, 31, 20, 50), form3.cleaned_data['datetime_field'])
self.assertEqual(datetime.time(20, 50), form3.cleaned_data['time_field'])
form4 = SelectDateForm({
'date_field_month': u'12',
'date_field_day': u'31',
'date_field_year': u'2009'
})
self.assertEqual(True, form4.is_valid())
self.assertEqual(datetime.date(2009, 12, 31), form4.cleaned_data['date_field'])
self.assertEqual(u'<select name="mydate_day" id="id_mydate_day">\n<option value="1">1</option>\n<option value="2">2</option>\n<option value="3">3</option>\n<option value="4">4</option>\n<option value="5">5</option>\n<option value="6">6</option>\n<option value="7">7</option>\n<option value="8">8</option>\n<option value="9">9</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n<option value="24">24</option>\n<option value="25">25</option>\n<option value="26">26</option>\n<option value="27">27</option>\n<option value="28">28</option>\n<option value="29">29</option>\n<option value="30">30</option>\n<option value="31" selected="selected">31</option>\n</select>\n<select name="mydate_month" id="id_mydate_month">\n<option value="1">gener</option>\n<option value="2">febrer</option>\n<option value="3">mar\xe7</option>\n<option value="4">abril</option>\n<option value="5">maig</option>\n<option value="6">juny</option>\n<option value="7">juliol</option>\n<option value="8">agost</option>\n<option value="9">setembre</option>\n<option value="10">octubre</option>\n<option value="11">novembre</option>\n<option value="12" selected="selected">desembre</option>\n</select>\n<select name="mydate_year" id="id_mydate_year">\n<option value="2009" selected="selected">2009</option>\n<option value="2010">2010</option>\n<option value="2011">2011</option>\n<option value="2012">2012</option>\n<option value="2013">2013</option>\n<option value="2014">2014</option>\n<option value="2015">2015</option>\n<option value="2016">2016</option>\n<option value="2017">2017</option>\n<option value="2018">2018</option>\n</select>', SelectDateWidget().render('mydate', datetime.date(2009, 12, 31)))
deactivate()
# English locale
settings.USE_L10N = True
activate('en')
self.assertEqual('N j, Y', get_format('DATE_FORMAT'))
self.assertEqual(0, get_format('FIRST_DAY_OF_WEEK'))
self.assertEqual('.', get_format('DECIMAL_SEPARATOR'))
self.assertEqual(u'Dec. 31, 2009', date_format(d))
self.assertEqual(u'December 2009', date_format(d, 'YEAR_MONTH_FORMAT'))
self.assertEqual(u'12/31/2009 8:50 p.m.', date_format(dt, 'SHORT_DATETIME_FORMAT'))
self.assertEqual('No localizable', localize('No localizable'))
settings.USE_THOUSAND_SEPARATOR = True
self.assertEqual(u'66,666.666', localize(n))
self.assertEqual(u'99,999.999', localize(f))
settings.USE_THOUSAND_SEPARATOR = False
self.assertEqual(u'66666.666', localize(n))
self.assertEqual(u'99999.999', localize(f))
self.assertEqual(u'Dec. 31, 2009', localize(d))
self.assertEqual(u'Dec. 31, 2009, 8:50 p.m.', localize(dt))
settings.USE_THOUSAND_SEPARATOR = True
self.assertEqual(u'66,666.666', template.Template('{{ n }}').render(ctxt))
self.assertEqual(u'99,999.999', template.Template('{{ f }}').render(ctxt))
settings.USE_THOUSAND_SEPARATOR = False
self.assertEqual(u'66666.666', template.Template('{{ n }}').render(ctxt))
self.assertEqual(u'99999.999', template.Template('{{ f }}').render(ctxt))
self.assertEqual(u'Dec. 31, 2009', template.Template('{{ d }}').render(ctxt))
self.assertEqual(u'Dec. 31, 2009, 8:50 p.m.', template.Template('{{ dt }}').render(ctxt))
self.assertEqual(u'66666.67', template.Template('{{ n|floatformat:2 }}').render(ctxt))
self.assertEqual(u'100000.0', template.Template('{{ f|floatformat }}').render(ctxt))
self.assertEqual(u'12/31/2009', template.Template('{{ d|date:"SHORT_DATE_FORMAT" }}').render(ctxt))
self.assertEqual(u'12/31/2009 8:50 p.m.', template.Template('{{ dt|date:"SHORT_DATETIME_FORMAT" }}').render(ctxt))
form5 = I18nForm({
'decimal_field': u'66666.666',
'float_field': u'99999.999',
'date_field': u'12/31/2009',
'datetime_field': u'12/31/2009 20:50',
'time_field': u'20:50'
})
self.assertEqual(True, form5.is_valid())
self.assertEqual(decimal.Decimal('66666.666'), form5.cleaned_data['decimal_field'])
self.assertEqual(99999.999, form5.cleaned_data['float_field'])
self.assertEqual(datetime.date(2009, 12, 31), form5.cleaned_data['date_field'])
self.assertEqual(datetime.datetime(2009, 12, 31, 20, 50), form5.cleaned_data['datetime_field'])
self.assertEqual(datetime.time(20, 50), form5.cleaned_data['time_field'])
form6 = SelectDateForm({
'date_field_month': u'12',
'date_field_day': u'31',
'date_field_year': u'2009'
})
self.assertEqual(True, form6.is_valid())
self.assertEqual(datetime.date(2009, 12, 31), form6.cleaned_data['date_field'])
self.assertEqual(u'<select name="mydate_month" id="id_mydate_month">\n<option value="1">January</option>\n<option value="2">February</option>\n<option value="3">March</option>\n<option value="4">April</option>\n<option value="5">May</option>\n<option value="6">June</option>\n<option value="7">July</option>\n<option value="8">August</option>\n<option value="9">September</option>\n<option value="10">October</option>\n<option value="11">November</option>\n<option value="12" selected="selected">December</option>\n</select>\n<select name="mydate_day" id="id_mydate_day">\n<option value="1">1</option>\n<option value="2">2</option>\n<option value="3">3</option>\n<option value="4">4</option>\n<option value="5">5</option>\n<option value="6">6</option>\n<option value="7">7</option>\n<option value="8">8</option>\n<option value="9">9</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n<option value="24">24</option>\n<option value="25">25</option>\n<option value="26">26</option>\n<option value="27">27</option>\n<option value="28">28</option>\n<option value="29">29</option>\n<option value="30">30</option>\n<option value="31" selected="selected">31</option>\n</select>\n<select name="mydate_year" id="id_mydate_year">\n<option value="2009" selected="selected">2009</option>\n<option value="2010">2010</option>\n<option value="2011">2011</option>\n<option value="2012">2012</option>\n<option value="2013">2013</option>\n<option value="2014">2014</option>\n<option value="2015">2015</option>\n<option value="2016">2016</option>\n<option value="2017">2017</option>\n<option value="2018">2018</option>\n</select>', SelectDateWidget().render('mydate', datetime.date(2009, 12, 31)))
deactivate()
# Check if sublocales fall back to the main locale
activate('de-at')
settings.USE_THOUSAND_SEPARATOR = True
self.assertEqual(u'66.666,666', template.Template('{{ n }}').render(ctxt))
deactivate()
activate('es-ar')
self.assertEqual(u'31 de Diciembre de 2009', date_format(d))
deactivate()
# Restore defaults
settings.USE_I18N = old_use_i18n
settings.USE_L10N = old_use_l10n
settings.USE_THOUSAND_SEPARATOR = old_use_thousand_separator
class MiscTests(TestCase):
def test_parse_spec_http_header(self):
"""
Testing HTTP header parsing. First, we test that we can parse the
values according to the spec (and that we extract all the pieces in
the right order).
"""
from django.utils.translation.trans_real import parse_accept_lang_header
p = parse_accept_lang_header
# Good headers.
self.assertEqual([('de', 1.0)], p('de'))
self.assertEqual([('en-AU', 1.0)], p('en-AU'))
self.assertEqual([('*', 1.0)], p('*;q=1.00'))
self.assertEqual([('en-AU', 0.123)], p('en-AU;q=0.123'))
self.assertEqual([('en-au', 0.10000000000000001)], p('en-au;q=0.1'))
self.assertEqual([('en-au', 1.0)], p('en-au;q=1.0'))
self.assertEqual([('da', 1.0), ('en', 0.5), ('en-gb', 0.25)], p('da, en-gb;q=0.25, en;q=0.5'))
self.assertEqual([('en-au-xx', 1.0)], p('en-au-xx'))
self.assertEqual([('de', 1.0), ('en-au', 0.75), ('en-us', 0.5), ('en', 0.25), ('es', 0.125), ('fa', 0.125)], p('de,en-au;q=0.75,en-us;q=0.5,en;q=0.25,es;q=0.125,fa;q=0.125'))
self.assertEqual([('*', 1.0)], p('*'))
self.assertEqual([('de', 1.0)], p('de;q=0.'))
self.assertEqual([], p(''))
# Bad headers; should always return [].
self.assertEqual([], p('en-gb;q=1.0000'))
self.assertEqual([], p('en;q=0.1234'))
self.assertEqual([], p('en;q=.2'))
self.assertEqual([], p('abcdefghi-au'))
self.assertEqual([], p('**'))
self.assertEqual([], p('en,,gb'))
self.assertEqual([], p('en-au;q=0.1.0'))
self.assertEqual([], p('XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXZ,en'))
self.assertEqual([], p('da, en-gb;q=0.8, en;q=0.7,#'))
self.assertEqual([], p('de;q=2.0'))
self.assertEqual([], p('de;q=0.a'))
self.assertEqual([], p(''))
def test_parse_literal_http_header(self):
"""
Now test that we parse a literal HTTP header correctly.
"""
from django.utils.translation.trans_real import get_language_from_request
g = get_language_from_request
from django.http import HttpRequest
r = HttpRequest
r.COOKIES = {}
r.META = {'HTTP_ACCEPT_LANGUAGE': 'pt-br'}
self.assertEqual('pt-br', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'pt'}
self.assertEqual('pt', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'es,de'}
self.assertEqual('es', g(r))
r.META = {'HTTP_ACCEPT_LANGUAGE': 'es-ar,de'}
self.assertEqual('es-ar', g(r))
# Python 2.3 and 2.4 return slightly different results for completely
# bogus locales, so we omit this test for that anything below 2.4.
# It's relatively harmless in any cases (GIGO). This also means this
# won't be executed on Jython currently, but life's like that
# sometimes. (On those platforms, passing in a truly bogus locale
# will get you the default locale back.)
if sys.version_info >= (2, 5):
# This test assumes there won't be a Django translation to a US
# variation of the Spanish language, a safe assumption. When the
# user sets it as the preferred language, the main 'es'
# translation should be selected instead.
r.META = {'HTTP_ACCEPT_LANGUAGE': 'es-us'}
self.assertEqual(g(r), 'es')
# This tests the following scenario: there isn't a main language (zh)
# translation of Django but there is a translation to variation (zh_CN)
# the user sets zh-cn as the preferred language, it should be selected
# by Django without falling back nor ignoring it.
r.META = {'HTTP_ACCEPT_LANGUAGE': 'zh-cn,de'}
self.assertEqual(g(r), 'zh-cn')