The argument "parameters" which is meant to give the wrapped rule's
exception some extra information does not always need to be defined, for
example when the exception does not need any parameter.
The current version of "AbstractEnvelope" required that argument and the
rules that are extending this class are passing an empty array.
This commit will make the "parameters" argument optional. As an extra,
it will make sure the tests from the children of "AbstractEnvelope" are
also covering their parent.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
