def find(cls, q=None):
'''Equivalent to Ming's query.find but calls self.canonical on address
before lookup. You should always use this instead of query.find'''
if q:
if q.get('email'):
email = cls.canonical(q['email'])
if email is not None:
q['email'] = email
else:
return utils.EmptyCursor()
return cls.query.find(q)
return cls.query.find()
def test_empty_cursor():
"""EmptyCursors conforms to specification of Ming's ODMCursor"""
cursor = utils.EmptyCursor()
assert_equal(cursor.count(), 0)
assert_equal(cursor.first(), None)
assert_equal(cursor.all(), [])
assert_equal(cursor.limit(10), cursor)
assert_equal(cursor.skip(10), cursor)
assert_equal(cursor.sort('name', 1), cursor)
assert_equal(cursor.hint('index'), cursor)
assert_equal(cursor.extensions, [])
assert_equal(cursor.options(arg1='val1', arg2='val2'), cursor)
assert_raises(ValueError, cursor.one)
assert_raises(StopIteration, cursor.next)
assert_raises(StopIteration, cursor._next_impl)