Fix #196 forbid empty linked account (!253)
* test refund behavior on reaped account * Revert "complete the test with refund check" This reverts commit edb68138. * complete the test with refund check * add test empty linked account
* test refund behavior on reaped account * Revert "complete the test with refund check" This reverts commit edb68138. * complete the test with refund check * add test empty linked account