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from wsgiref.util import setup_testing_defaults
from webtest import TestApp
from six import b as b_
from pecan.middleware.debug import DebugMiddleware
from pecan.tests import PecanTestCase
class StripPasteVar(object):
def __init__(self, app):
self.app = app
def __call__(self, environ, start_response):
environ.pop('paste.testing')
return self.app(environ, start_response)
class TestDebugMiddleware(PecanTestCase):
def setUp(self):
super(TestDebugMiddleware, self).setUp()
def conditional_error_app(environ, start_response):
setup_testing_defaults(environ)
if environ['PATH_INFO'] == '/error':
assert 1 == 2
start_response("200 OK", [('Content-type', 'text/plain')])
return [b_('requested page returned')]
self.app = TestApp(StripPasteVar(DebugMiddleware(
conditional_error_app
)))
def test_middleware_passes_through_when_no_exception_raised(self):
r = self.app.get('/')
assert r.status_int == 200
assert r.body == b_('requested page returned')
def test_middleware_gives_stack_trace_on_errors(self):
r = self.app.get('/error', expect_errors=True)
assert r.status_int == 400
assert b_('AssertionError') in r.body
def test_middleware_complains_in_multi_process_environment(self):
class MultiProcessApp(object):
def __init__(self, app):
self.app = app
def __call__(self, environ, start_response):
environ['wsgi.multiprocess'] = True
return self.app(environ, start_response)
def conditional_error_app(environ, start_response):
start_response("200 OK", [('Content-type', 'text/plain')])
return ['Hello, World!']
app = TestApp(MultiProcessApp(DebugMiddleware(conditional_error_app)))
self.assertRaises(
RuntimeError,
app.get,
'/'
)
def test_middlware_allows_for_post_mortem_debugging(self):
def patch_debugger(d):
def _patched_debug_request():
d.append(True)
return _patched_debug_request
debugger = []
app = TestApp(StripPasteVar(DebugMiddleware(
self.app,
patch_debugger(debugger)
)))
r = app.get('/error', expect_errors=True)
assert r.status_int == 400
r = app.get('/__pecan_initiate_pdb__', expect_errors=True)
assert len(debugger) > 0
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