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from pathlib import Path
from unittest import mock, skipIf
from django.template import TemplateSyntaxError
from django.test import RequestFactory
from .test_dummy import TemplateStringsTests
try:
import jinja2
except ImportError:
jinja2 = None
Jinja2 = None
else:
from django.template.backends.jinja2 import Jinja2
@skipIf(jinja2 is None, "this test requires jinja2")
class Jinja2Tests(TemplateStringsTests):
engine_class = Jinja2
backend_name = 'jinja2'
options = {
'keep_trailing_newline': True,
'context_processors': [
'django.template.context_processors.static',
],
}
def test_origin(self):
template = self.engine.get_template('template_backends/hello.html')
self.assertTrue(template.origin.name.endswith('hello.html'))
self.assertEqual(template.origin.template_name, 'template_backends/hello.html')
def test_origin_from_string(self):
template = self.engine.from_string('Hello!\n')
self.assertEqual(template.origin.name, '<template>')
self.assertIsNone(template.origin.template_name)
def test_self_context(self):
"""
Using 'self' in the context should not throw errors (#24538).
"""
# self will be overridden to be a TemplateReference, so the self
# variable will not come through. Attempting to use one though should
# not throw an error.
template = self.engine.from_string('hello {{ foo }}!')
content = template.render(context={'self': 'self', 'foo': 'world'})
self.assertEqual(content, 'hello world!')
def test_exception_debug_info_min_context(self):
with self.assertRaises(TemplateSyntaxError) as e:
self.engine.get_template('template_backends/syntax_error.html')
debug = e.exception.template_debug
self.assertEqual(debug['after'], '')
self.assertEqual(debug['before'], '')
self.assertEqual(debug['during'], '{% block %}')
self.assertEqual(debug['bottom'], 1)
self.assertEqual(debug['top'], 0)
self.assertEqual(debug['line'], 1)
self.assertEqual(debug['total'], 1)
self.assertEqual(len(debug['source_lines']), 1)
self.assertTrue(debug['name'].endswith('syntax_error.html'))
self.assertIn('message', debug)
def test_exception_debug_info_max_context(self):
with self.assertRaises(TemplateSyntaxError) as e:
self.engine.get_template('template_backends/syntax_error2.html')
debug = e.exception.template_debug
self.assertEqual(debug['after'], '')
self.assertEqual(debug['before'], '')
self.assertEqual(debug['during'], '{% block %}')
self.assertEqual(debug['bottom'], 26)
self.assertEqual(debug['top'], 5)
self.assertEqual(debug['line'], 16)
self.assertEqual(debug['total'], 31)
self.assertEqual(len(debug['source_lines']), 21)
self.assertTrue(debug['name'].endswith('syntax_error2.html'))
self.assertIn('message', debug)
def test_context_processors(self):
request = RequestFactory().get('/')
template = self.engine.from_string('Static URL: {{ STATIC_URL }}')
content = template.render(request=request)
self.assertEqual(content, 'Static URL: /static/')
with self.settings(STATIC_URL='/s/'):
content = template.render(request=request)
self.assertEqual(content, 'Static URL: /s/')
def test_dirs_pathlib(self):
engine = Jinja2({
'DIRS': [Path(__file__).parent / 'templates' / 'template_backends'],
'APP_DIRS': False,
'NAME': 'jinja2',
'OPTIONS': {},
})
template = engine.get_template('hello.html')
self.assertEqual(template.render({'name': 'Joe'}), 'Hello Joe!')
def test_template_render_nested_error(self):
template = self.engine.get_template('template_backends/syntax_error_include.html')
with self.assertRaises(TemplateSyntaxError) as e:
template.render(context={})
debug = e.exception.template_debug
self.assertEqual(debug['after'], '')
self.assertEqual(debug['before'], '')
self.assertEqual(debug['during'], '{% block %}')
self.assertEqual(debug['bottom'], 1)
self.assertEqual(debug['top'], 0)
self.assertEqual(debug['line'], 1)
self.assertEqual(debug['total'], 1)
self.assertEqual(len(debug['source_lines']), 1)
self.assertTrue(debug['name'].endswith('syntax_error.html'))
self.assertIn('message', debug)
def test_template_render_error_nonexistent_source(self):
template = self.engine.get_template('template_backends/hello.html')
with mock.patch(
'jinja2.environment.Template.render',
side_effect=jinja2.TemplateSyntaxError('', 1, filename='nonexistent.html'),
):
with self.assertRaises(TemplateSyntaxError) as e:
template.render(context={})
debug = e.exception.template_debug
self.assertEqual(debug['after'], '')
self.assertEqual(debug['before'], '')
self.assertEqual(debug['during'], '')
self.assertEqual(debug['bottom'], 0)
self.assertEqual(debug['top'], 0)
self.assertEqual(debug['line'], 1)
self.assertEqual(debug['total'], 0)
self.assertEqual(len(debug['source_lines']), 0)
self.assertTrue(debug['name'].endswith('nonexistent.html'))
self.assertIn('message', debug)
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