Governance-v2: Fix GovernanceProposal default

energy-integration/governance-v2/src/proposal.rs

@@ -1,3 +1,5 @@
+use multiversx_sc::codec::{DecodeDefault, EncodeDefault};
+
 multiversx_sc::imports!();
 multiversx_sc::derive_imports!();
 
@@ -50,7 +52,9 @@ impl<M: ManagedTypeApi> From<GovernanceActionAsMultiArg<M>> for GovernanceAction
     }
 }
 
-#[derive(TypeAbi, TopEncode, TopDecode, PartialEq, Debug)]
+#[derive(
+    TypeAbi, NestedEncode, NestedDecode, PartialEq, Debug, TopEncodeOrDefault, TopDecodeOrDefault,
+)]
 pub struct GovernanceProposal<M: ManagedTypeApi> {
     pub proposal_id: usize,
     pub proposer: ManagedAddress<M>,
@@ -65,3 +69,44 @@ pub struct GovernanceProposal<M: ManagedTypeApi> {
     pub proposal_start_block: u64,
     pub fee_withdrawn: bool,
 }
+
+impl<M: ManagedTypeApi> EncodeDefault for GovernanceProposal<M> {
+    fn is_default(&self) -> bool {
+        self.proposal_id == 0
+    }
+}
+
+impl<M: ManagedTypeApi> DecodeDefault for GovernanceProposal<M> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl<M: ManagedTypeApi> Default for GovernanceProposal<M> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl<M: ManagedTypeApi> GovernanceProposal<M> {
+    pub fn new() -> Self {
+        GovernanceProposal {
+            proposal_id: 0,
+            proposer: ManagedAddress::default(),
+            actions: ArrayVec::default(),
+            description: ManagedBuffer::default(),
+            fee_payment: EsdtTokenPayment {
+                token_identifier: TokenIdentifier::from(""),
+                token_nonce: 0,
+                amount: BigUint::zero(),
+            },
+            minimum_quorum: BigUint::default(),
+            voting_delay_in_blocks: 0,
+            voting_period_in_blocks: 0,
+            withdraw_percentage_defeated: 0,
+            total_quorum: BigUint::default(),
+            proposal_start_block: 0,
+            fee_withdrawn: false,
+        }
+    }
+}

energy-integration/governance-v2/tests/gov_rust_test.rs

@@ -722,6 +722,19 @@ fn gov_propose_cancel_proposal_id_test() {
 
     gov_setup.cancel_proposal(&first_user_addr, 2).assert_ok();
 
+    // Try to retrieve the cancelled proposal
+    gov_setup
+        .b_mock
+        .execute_tx(
+            &gov_setup.first_user.clone(),
+            &gov_setup.gov_wrapper,
+            &rust_biguint!(0),
+            |sc| {
+                sc.proposals().get(2);
+            },
+        )
+        .assert_ok();
+
     // Check proposer balance (fee should be refunded)
     gov_setup.b_mock.check_nft_balance::<Empty>(
         &first_user_addr,
@@ -730,6 +743,10 @@ fn gov_propose_cancel_proposal_id_test() {
         &min_fee,
         None,
     );
+    assert_eq!(proposal_id, 3);
+    gov_setup
+        .check_proposal_id_consistency(&first_user_addr, proposal_id)
+        .assert_ok();
 
     // Proposal ID = 4
     let (result, proposal_id) = gov_setup.propose(
@@ -747,6 +764,19 @@ fn gov_propose_cancel_proposal_id_test() {
 
     gov_setup.cancel_proposal(&first_user_addr, 4).assert_ok();
 
+    // Try to retrieve the cancelled proposal
+    gov_setup
+        .b_mock
+        .execute_tx(
+            &gov_setup.first_user.clone(),
+            &gov_setup.gov_wrapper,
+            &rust_biguint!(0),
+            |sc| {
+                sc.proposals().get(4);
+            },
+        )
+        .assert_ok();
+
     // Proposal ID = 5
     let (result, proposal_id) = gov_setup.propose(
         &first_user_addr,