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# -*- coding: utf-8 -*-
"""
jinja2.testsuite.debug
~~~~~~~~~~~~~~~~~~~~~~
Tests the debug system.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
"""
import pytest
import re
import sys
from traceback import format_exception
from jinja2 import Environment, TemplateSyntaxError
from traceback import format_exception
@pytest.fixture
def fs_env(filesystem_loader):
'''returns a new environment.
'''
return Environment(loader=filesystem_loader)
@pytest.mark.debug
class TestDebug():
def assert_traceback_matches(self, callback, expected_tb):
try:
callback()
except Exception as e:
tb = format_exception(*sys.exc_info())
if re.search(expected_tb.strip(), ''.join(tb)) is None:
assert False, ('Traceback did not match:\n\n%s\nexpected:\n%s' %
(''.join(tb), expected_tb))
else:
assert False, 'Expected exception'
def test_runtime_error(self, fs_env):
def test():
tmpl.render(fail=lambda: 1 / 0)
tmpl = fs_env.get_template('broken.html')
self.assert_traceback_matches(test, r'''
File ".*?broken.html", line 2, in (top-level template code|<module>)
\{\{ fail\(\) \}\}
File ".*debug?.pyc?", line \d+, in <lambda>
tmpl\.render\(fail=lambda: 1 / 0\)
ZeroDivisionError: (int(eger)? )?division (or modulo )?by zero
''')
def test_syntax_error(self, fs_env):
# XXX: the .*? is necessary for python3 which does not hide
# some of the stack frames we don't want to show. Not sure
# what's up with that, but that is not that critical. Should
# be fixed though.
self.assert_traceback_matches(lambda: fs_env.get_template('syntaxerror.html'), r'''(?sm)
File ".*?syntaxerror.html", line 4, in (template|<module>)
\{% endif %\}.*?
(jinja2\.exceptions\.)?TemplateSyntaxError: Encountered unknown tag 'endif'. Jinja was looking for the following tags: 'endfor' or 'else'. The innermost block that needs to be closed is 'for'.
''')
def test_regular_syntax_error(self, fs_env):
def test():
raise TemplateSyntaxError('wtf', 42)
self.assert_traceback_matches(test, r'''
File ".*debug.pyc?", line \d+, in test
raise TemplateSyntaxError\('wtf', 42\)
(jinja2\.exceptions\.)?TemplateSyntaxError: wtf
line 42''')
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