[x] expectFail now checks for input length errors as well.
[x] If an unexpected error occurs during expectFail, it is thrown. This will make sure that expectFail will fail (although by throwing an error) if the method we check for errors require a change due to different error messages by SnarkJS at a later version.
expectFailnow checks for input length errors as well.expectFail, it is thrown. This will make sure thatexpectFailwill fail (although by throwing an error) if the method we check for errors require a change due to different error messages by SnarkJS at a later version.