Fix the bug

pallets/gear/src/runtime_api.rs

@@ -45,7 +45,7 @@ where
 
     #[allow(clippy::too_many_arguments)]
     pub(crate) fn calculate_gas_info_impl(
-        source: H256,
+        origin: H256,
         kind: HandleKind,
         initial_gas: u64,
         payload: Vec<u8>,
@@ -56,16 +56,21 @@ where
     ) -> Result<GasInfo, Vec<u8>> {
         Self::enable_lazy_pages();
 
-        let account = source.cast();
+        let origin = origin.cast();
+        let value = value.unique_saturated_into();
 
-        let balance = CurrencyOf::<T>::free_balance(&account);
-        let max_balance: BalanceOf<T> = <T as pallet_gear_bank::Config>::GasMultiplier::get()
-            .gas_to_value(initial_gas)
-            + value.unique_saturated_into();
-        CurrencyOf::<T>::deposit_creating(&account, max_balance.saturating_sub(balance));
+        let origin_balance = CurrencyOf::<T>::free_balance(&origin);
 
-        let who = frame_support::dispatch::RawOrigin::Signed(account);
-        let value: BalanceOf<T> = value.unique_saturated_into();
+        let value_for_gas =
+            <T as pallet_gear_bank::Config>::GasMultiplier::get().gas_to_value(initial_gas);
+
+        let required_balance = CurrencyOf::<T>::minimum_balance()
+            .saturating_add(value_for_gas)
+            .saturating_add(value);
+
+        CurrencyOf::<T>::deposit_creating(&origin, required_balance.saturating_sub(origin_balance));
+
+        let who = frame_support::dispatch::RawOrigin::Signed(origin);
 
         QueueOf::<T>::clear();
 

pallets/gear/src/tests.rs

@@ -86,7 +86,6 @@ use utils::*;
 type Gas = <<Test as Config>::GasProvider as common::GasProvider>::GasTree;
 
 #[test]
-#[should_panic]
 fn calculate_gas_zero_balance() {
     init_logger();
     new_test_ext().execute_with(|| {