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django/tests/template_tests/syntax_tests/i18n/test_trans.py

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from asgiref.local import Local
from django.template import Context, Template, TemplateSyntaxError
from django.templatetags.l10n import LocalizeNode
from django.test import SimpleTestCase, override_settings
from django.utils import translation
from django.utils.safestring import mark_safe
from django.utils.translation import trans_real
from ...utils import setup
from .base import MultipleLocaleActivationTestCase, extended_locale_paths
class I18nTransTagTests(SimpleTestCase):
libraries = {'i18n': 'django.templatetags.i18n'}
@setup({'i18n01': '{% load i18n %}{% trans \'xxxyyyxxx\' %}'})
def test_i18n01(self):
"""simple translation of a string delimited by '."""
output = self.engine.render_to_string('i18n01')
self.assertEqual(output, 'xxxyyyxxx')
@setup({'i18n02': '{% load i18n %}{% trans "xxxyyyxxx" %}'})
def test_i18n02(self):
"""simple translation of a string delimited by "."""
output = self.engine.render_to_string('i18n02')
self.assertEqual(output, 'xxxyyyxxx')
@setup({'i18n06': '{% load i18n %}{% trans "Page not found" %}'})
def test_i18n06(self):
"""simple translation of a string to German"""
with translation.override('de'):
output = self.engine.render_to_string('i18n06')
self.assertEqual(output, 'Seite nicht gefunden')
@setup({'i18n09': '{% load i18n %}{% trans "Page not found" noop %}'})
def test_i18n09(self):
"""simple non-translation (only marking) of a string to German"""
with translation.override('de'):
output = self.engine.render_to_string('i18n09')
self.assertEqual(output, 'Page not found')
@setup({'i18n20': '{% load i18n %}{% trans andrew %}'})
def test_i18n20(self):
output = self.engine.render_to_string('i18n20', {'andrew': 'a & b'})
self.assertEqual(output, 'a & b')
@setup({'i18n22': '{% load i18n %}{% trans andrew %}'})
def test_i18n22(self):
output = self.engine.render_to_string('i18n22', {'andrew': mark_safe('a & b')})
self.assertEqual(output, 'a & b')
@setup({'i18n23': '{% load i18n %}{% trans "Page not found"|capfirst|slice:"6:" %}'})
def test_i18n23(self):
"""Using filters with the {% trans %} tag (#5972)."""
with translation.override('de'):
output = self.engine.render_to_string('i18n23')
self.assertEqual(output, 'nicht gefunden')
@setup({'i18n24': '{% load i18n %}{% trans \'Page not found\'|upper %}'})
def test_i18n24(self):
with translation.override('de'):
output = self.engine.render_to_string('i18n24')
self.assertEqual(output, 'SEITE NICHT GEFUNDEN')
@setup({'i18n25': '{% load i18n %}{% trans somevar|upper %}'})
def test_i18n25(self):
with translation.override('de'):
output = self.engine.render_to_string('i18n25', {'somevar': 'Page not found'})
self.assertEqual(output, 'SEITE NICHT GEFUNDEN')
# trans tag with as var
@setup({'i18n35': '{% load i18n %}{% trans "Page not found" as page_not_found %}{{ page_not_found }}'})
def test_i18n35(self):
with translation.override('de'):
output = self.engine.render_to_string('i18n35')
self.assertEqual(output, 'Seite nicht gefunden')
@setup({'i18n36': '{% load i18n %}'
'{% trans "Page not found" noop as page_not_found %}{{ page_not_found }}'})
def test_i18n36(self):
with translation.override('de'):
output = self.engine.render_to_string('i18n36')
self.assertEqual(output, 'Page not found')
@setup({'template': '{% load i18n %}{% trans %}A}'})
def test_syntax_error_no_arguments(self):
msg = "'trans' takes at least one argument"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
self.engine.render_to_string('template')
@setup({'template': '{% load i18n %}{% trans "Yes" badoption %}'})
def test_syntax_error_bad_option(self):
msg = "Unknown argument for 'trans' tag: 'badoption'"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
self.engine.render_to_string('template')
@setup({'template': '{% load i18n %}{% trans "Yes" as %}'})
def test_syntax_error_missing_assignment(self):
msg = "No argument provided to the 'trans' tag for the as option."
with self.assertRaisesMessage(TemplateSyntaxError, msg):
self.engine.render_to_string('template')
@setup({'template': '{% load i18n %}{% trans "Yes" as var context %}'})
def test_syntax_error_missing_context(self):
msg = "No argument provided to the 'trans' tag for the context option."
with self.assertRaisesMessage(TemplateSyntaxError, msg):
self.engine.render_to_string('template')
@setup({'template': '{% load i18n %}{% trans "Yes" context as var %}'})
def test_syntax_error_context_as(self):
msg = "Invalid argument 'as' provided to the 'trans' tag for the context option"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
self.engine.render_to_string('template')
@setup({'template': '{% load i18n %}{% trans "Yes" context noop %}'})
def test_syntax_error_context_noop(self):
msg = "Invalid argument 'noop' provided to the 'trans' tag for the context option"
with self.assertRaisesMessage(TemplateSyntaxError, msg):
self.engine.render_to_string('template')
@setup({'template': '{% load i18n %}{% trans "Yes" noop noop %}'})
def test_syntax_error_duplicate_option(self):
msg = "The 'noop' option was specified more than once."
with self.assertRaisesMessage(TemplateSyntaxError, msg):
self.engine.render_to_string('template')
@setup({'template': '{% load i18n %}{% trans "%s" %}'})
def test_trans_tag_using_a_string_that_looks_like_str_fmt(self):
output = self.engine.render_to_string('template')
self.assertEqual(output, '%s')
class TranslationTransTagTests(SimpleTestCase):
@override_settings(LOCALE_PATHS=extended_locale_paths)
def test_template_tags_pgettext(self):
"""{% trans %} takes message contexts into account (#14806)."""
trans_real._active = Local()
trans_real._translations = {}
with translation.override('de'):
# Nonexistent context...
t = Template('{% load i18n %}{% trans "May" context "nonexistent" %}')
rendered = t.render(Context())
self.assertEqual(rendered, 'May')
# Existing context... using a literal
t = Template('{% load i18n %}{% trans "May" context "month name" %}')
rendered = t.render(Context())
self.assertEqual(rendered, 'Mai')
t = Template('{% load i18n %}{% trans "May" context "verb" %}')
rendered = t.render(Context())
self.assertEqual(rendered, 'Kann')
# Using a variable
t = Template('{% load i18n %}{% trans "May" context message_context %}')
rendered = t.render(Context({'message_context': 'month name'}))
self.assertEqual(rendered, 'Mai')
t = Template('{% load i18n %}{% trans "May" context message_context %}')
rendered = t.render(Context({'message_context': 'verb'}))
self.assertEqual(rendered, 'Kann')
# Using a filter
t = Template('{% load i18n %}{% trans "May" context message_context|lower %}')
rendered = t.render(Context({'message_context': 'MONTH NAME'}))
self.assertEqual(rendered, 'Mai')
t = Template('{% load i18n %}{% trans "May" context message_context|lower %}')
rendered = t.render(Context({'message_context': 'VERB'}))
self.assertEqual(rendered, 'Kann')
# Using 'as'
t = Template('{% load i18n %}{% trans "May" context "month name" as var %}Value: {{ var }}')
rendered = t.render(Context())
self.assertEqual(rendered, 'Value: Mai')
t = Template('{% load i18n %}{% trans "May" as var context "verb" %}Value: {{ var }}')
rendered = t.render(Context())
self.assertEqual(rendered, 'Value: Kann')
class MultipleLocaleActivationTransTagTests(MultipleLocaleActivationTestCase):
def test_single_locale_activation(self):
"""
Simple baseline behavior with one locale for all the supported i18n
constructs.
"""
with translation.override('fr'):
self.assertEqual(Template("{% load i18n %}{% trans 'Yes' %}").render(Context({})), 'Oui')
def test_multiple_locale_trans(self):
with translation.override('de'):
t = Template("{% load i18n %}{% trans 'No' %}")
with translation.override(self._old_language), translation.override('nl'):
self.assertEqual(t.render(Context({})), 'Nee')
def test_multiple_locale_deactivate_trans(self):
with translation.override('de', deactivate=True):
t = Template("{% load i18n %}{% trans 'No' %}")
with translation.override('nl'):
self.assertEqual(t.render(Context({})), 'Nee')
def test_multiple_locale_direct_switch_trans(self):
with translation.override('de'):
t = Template("{% load i18n %}{% trans 'No' %}")
with translation.override('nl'):
self.assertEqual(t.render(Context({})), 'Nee')
class LocalizeNodeTests(SimpleTestCase):
def test_repr(self):
node = LocalizeNode(nodelist=[], use_l10n=True)
self.assertEqual(repr(node), '<LocalizeNode>')