fn assert_can_enter(self: @ContractState, yang: ContractAddress, gate: IGateDispatcher, enter_amt: u128) {
    ...
    
    let suspension_status: YangSuspensionStatus = self.shrine.read().get_yang_suspension_status(yang);
    assert(suspension_status == YangSuspensionStatus::None, 'SE: Yang suspended');
    
    ...
}
#[test]
#[should_panic(expected: ('SE: Yang suspended',))]
fn test_withdraw_suspended_fail() {
    let (shrine, sentinel, abbot, yangs, _, trove_owner, trove_id, _, _) = abbot_utils::deploy_abbot_and_open_trove(
        Option::None, Option::None, Option::None, Option::None, Option::None
    );
    let asset_addr: ContractAddress = *yangs.at(0);
    let amount: u128 = WAD_SCALE;

    start_prank(CheatTarget::One(sentinel.contract_address), sentinel_utils::admin());
    sentinel.suspend_yang(asset_addr);
    stop_prank(CheatTarget::One(sentinel.contract_address));

    start_prank(CheatTarget::One(abbot.contract_address), trove_owner);
    abbot.withdraw(trove_id, AssetBalance { address: asset_addr, amount });
}
diff --git a/src/core/sentinel.cairo b/src/core/sentinel.cairo
index b18edde..9671ca2 100644
--- a/src/core/sentinel.cairo
+++ b/src/core/sentinel.cairo
@@ -156,7 +156,8 @@ mod sentinel {
         // This can be used to simulate the effects of `enter`.
         fn convert_to_yang(self: @ContractState, yang: ContractAddress, asset_amt: u128) -> Wad {
             let gate: IGateDispatcher = self.yang_to_gate.read(yang);
-            self.assert_can_enter(yang, gate, asset_amt);
+            assert(gate.contract_address.is_non_zero(), 'SE: Yang not added'); // alike to sentinel::convert_to_assets(...)
+            assert(self.yang_is_live.read(yang), 'SE: Gate is not live');      // to satisfy test_sentinel::test_kill_gate_and_preview_enter()
             gate.convert_to_yang(asset_amt)
         }
