def setup(self):
# we clear this out for various reasons. The most important one is
# that a real flaskext could be in there which would disable our
# fake package. Secondly we want to make sure that the flaskext
# import hook does not break on reloading.
for entry, value in list(sys.modules.items()):
if (entry.startswith('flask.ext.') or
entry.startswith('flask_') or
entry.startswith('flaskext.') or
entry == 'flaskext') and value is not None:
sys.modules.pop(entry, None)
from flask import ext
reload_module(ext)
# reloading must not add more hooks
import_hooks = 0
for item in sys.meta_path:
cls = type(item)
if cls.__module__ == 'flask.exthook' and \
cls.__name__ == 'ExtensionImporter':
import_hooks += 1
self.assert_equal(import_hooks, 1)
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