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from django.template import Context, Engine
from django.template.base import TextNode, VariableNode
from django.test import SimpleTestCase
class NodelistTest(SimpleTestCase):
@classmethod
def setUpClass(cls):
cls.engine = Engine()
super().setUpClass()
def test_for(self):
template = self.engine.from_string("{% for i in 1 %}{{ a }}{% endfor %}")
vars = template.nodelist.get_nodes_by_type(VariableNode)
self.assertEqual(len(vars), 1)
def test_if(self):
template = self.engine.from_string("{% if x %}{{ a }}{% endif %}")
vars = template.nodelist.get_nodes_by_type(VariableNode)
self.assertEqual(len(vars), 1)
def test_ifchanged(self):
template = self.engine.from_string("{% ifchanged x %}{{ a }}{% endifchanged %}")
vars = template.nodelist.get_nodes_by_type(VariableNode)
self.assertEqual(len(vars), 1)
class TextNodeTest(SimpleTestCase):
def test_textnode_repr(self):
engine = Engine()
for temptext, reprtext in [
("Hello, world!", "<TextNode: 'Hello, world!'>"),
("One\ntwo.", "<TextNode: 'One\\ntwo.'>"),
]:
template = engine.from_string(temptext)
texts = template.nodelist.get_nodes_by_type(TextNode)
self.assertEqual(repr(texts[0]), reprtext)
class ErrorIndexTest(SimpleTestCase):
"""
Checks whether index of error is calculated correctly in
template debugger in for loops. Refs ticket #5831
"""
def test_correct_exception_index(self):
tests = [
(
"{% load bad_tag %}{% for i in range %}{% badsimpletag %}{% endfor %}",
(38, 56),
),
(
"{% load bad_tag %}{% for i in range %}{% for j in range %}"
"{% badsimpletag %}{% endfor %}{% endfor %}",
(58, 76),
),
(
"{% load bad_tag %}{% for i in range %}{% badsimpletag %}"
"{% for j in range %}Hello{% endfor %}{% endfor %}",
(38, 56),
),
(
"{% load bad_tag %}{% for i in range %}{% for j in five %}"
"{% badsimpletag %}{% endfor %}{% endfor %}",
(38, 57),
),
(
"{% load bad_tag %}{% for j in five %}{% badsimpletag %}{% endfor %}",
(18, 37),
),
]
context = Context(
{
"range": range(5),
"five": 5,
}
)
engine = Engine(
debug=True, libraries={"bad_tag": "template_tests.templatetags.bad_tag"}
)
for source, expected_error_source_index in tests:
template = engine.from_string(source)
try:
template.render(context)
except (RuntimeError, TypeError) as e:
debug = e.template_debug
self.assertEqual(
(debug["start"], debug["end"]), expected_error_source_index
)
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