dpol_test_fail
dpol_test_fail(user, name, 0);
dpol_test_fail("admin", "delete-policy-test", KADM5_UNK_POLICY);
dpol_test_fail("admin", "", KADM5_BAD_POLICY);
dpol_test_fail("$admin", "test-pol", KADM5_AUTH_DELETE);
dpol_test_fail("admin/none", "test-pol", KADM5_AUTH_DELETE);
dpol_test_fail("admin/add", "test-pol", KADM5_AUTH_DELETE);
dpol_test_fail(NULL, "test-pol", KADM5_BAD_SERVER_HANDLE);
dpol_test_fail("admin", NULL, EINVAL);
dpol_test_fail("admin", "unknown-policy", KADM5_UNK_POLICY);