deb-python-falcon/tests/test_error_handlers.py

117 lines
3.4 KiB
Python

import pytest
import falcon
from falcon import testing
def capture_error(ex, req, resp, params):
resp.status = falcon.HTTP_723
resp.body = 'error: %s' % str(ex)
def handle_error_first(ex, req, resp, params):
resp.status = falcon.HTTP_200
resp.body = 'first error handler'
class CustomBaseException(Exception):
pass
class CustomException(CustomBaseException):
@staticmethod
def handle(ex, req, resp, params):
raise falcon.HTTPError(
falcon.HTTP_792,
u'Internet crashed!',
u'Catastrophic weather event',
href=u'http://example.com/api/inconvenient-truth',
href_text=u'Drill, baby drill!')
class ErroredClassResource(object):
def on_get(self, req, resp):
raise Exception('Plain Exception')
def on_head(self, req, resp):
raise CustomBaseException('CustomBaseException')
def on_delete(self, req, resp):
raise CustomException('CustomException')
@pytest.fixture
def client():
app = falcon.API()
app.add_route('/', ErroredClassResource())
return testing.TestClient(app)
class TestErrorHandler(object):
def test_caught_error(self, client):
client.app.add_error_handler(Exception, capture_error)
result = client.simulate_get()
assert result.text == 'error: Plain Exception'
result = client.simulate_head()
assert result.status_code == 723
assert not result.content
def test_uncaught_error(self, client):
client.app.add_error_handler(CustomException, capture_error)
with pytest.raises(Exception):
client.simulate_get()
def test_uncaught_error_else(self, client):
with pytest.raises(Exception):
client.simulate_get()
def test_converted_error(self, client):
client.app.add_error_handler(CustomException)
result = client.simulate_delete()
assert result.status_code == 792
assert result.json[u'title'] == u'Internet crashed!'
def test_handle_not_defined(self, client):
with pytest.raises(AttributeError):
client.app.add_error_handler(CustomBaseException)
def test_subclass_error(self, client):
client.app.add_error_handler(CustomBaseException, capture_error)
result = client.simulate_delete()
assert result.status_code == 723
assert result.text == 'error: CustomException'
def test_error_order_duplicate(self, client):
client.app.add_error_handler(Exception, capture_error)
client.app.add_error_handler(Exception, handle_error_first)
result = client.simulate_get()
assert result.text == 'first error handler'
def test_error_order_subclass(self, client):
client.app.add_error_handler(Exception, capture_error)
client.app.add_error_handler(CustomException, handle_error_first)
result = client.simulate_delete()
assert result.status_code == 200
assert result.text == 'first error handler'
result = client.simulate_get()
assert result.status_code == 723
assert result.text == 'error: Plain Exception'
def test_error_order_subclass_masked(self, client):
client.app.add_error_handler(CustomException, handle_error_first)
client.app.add_error_handler(Exception, capture_error)
result = client.simulate_delete()
assert result.status_code == 723
assert result.text == 'error: CustomException'