* add fixtures to conftest.py
* use fixtures in test_appctx.py
* use fixtures in test_blueprints.py
* use fixtures in test_depreciations.py
* use fixtures in test_regressions.py
* use fixtures in test_reqctx.py
* use fixtures in test_templating.py
* use fixtures in test_user_error_handler.py
* use fixtures in test_views.py
* use fixtures in test_basics.py
* use fixtures in test_helpers.py
* use fixtures in test_testing.py
* update conftest.py
* make docstrings PEP-257 compliant
* cleanup
* switch dictonary format
* use pytest parameterization for test_json_as_unicode
Error handlers are now returned in order of blueprint:code, app:code,
blueprint:HTTPException, app:HTTPException, None
Corresponding tests also added.
Ref issue #941, pr #1383, #2082, #2144
After registering a custom errorhandler by exception class, raising any
unhandled exception in a view function swallows the error and instead
throws an `IndexError` on trying to look up the appropriate handler.
This patch avoids the uninformative `IndexError` and preserves the
original exception by looping until the deque of classes is empty, not
forever.
David Lord
Christian Stade-Schuldt
cerickson
Florian Sachs
Joshua Carp
Markus Unterwaditzer
Phil Schaf