The test expects in one of the items of this test to pass when the Auth sent in the header is empty. The CMI5 engine will reject it with a 400 return code. However, the testsuite expects it to accept it.
Looking into the testsuite, it is setting the Auth to an empty string
if (e.setAuth(""), !await i.sendStatement(e, r, "8.1.2.0-5 (d)")) return;