Handle pending block case in traceTransaction methods (#1833)

Author: kirugan

.github/workflows/starknet-js-tests.yml

@@ -29,7 +29,7 @@ jobs:
         run: npm ci
 
       - name: Run tests
-        run: npm test -- rpcProvider.test.ts transactionReceipt.test.ts rpcChannel.test.ts defaultProvider.test.ts contract.test.ts cairo1v2.test.ts cairo1v2_typed.test.ts cairo1.test.ts account.test.ts account.starknetId.test.ts --testNamePattern="^(?!.*traceTransaction|.*declare Sierra 1.5.0).*$"
+        run: npm test -- rpcProvider.test.ts transactionReceipt.test.ts rpcChannel.test.ts defaultProvider.test.ts contract.test.ts cairo1v2.test.ts cairo1v2_typed.test.ts cairo1.test.ts account.test.ts account.starknetId.test.ts --testNamePattern="^(?!.*declare Sierra 1.5.0).*$"
         env:
           TEST_RPC_URL: ${{ secrets.TEST_RPC_URL }}
           TEST_ACCOUNT_ADDRESS: ${{ secrets.TEST_ACCOUNT_ADDRESS }}

clients/gateway/gateway_test.go

@@ -14,7 +14,7 @@ func TestAddInvokeTx(t *testing.T) {
 	client := gateway.NewTestClient(t)
 
 	t.Run("Correct request", func(t *testing.T) {
-		invokeTx := "{\"max_fee\":\"0x1\",\"version\":\"0x1\",\"signature\":[],\"nonce\":\"0x1\",\"type\":\"INVOKE\",\"sender_address\":\"0x326e3db4580b94948ca9d1d87fa359f2fa047a31a34757734a86aa4231fb9bb\",\"calldata\":[]}"
+		invokeTx := `{"max_fee":"0x1","version":"0x1","signature":[],"nonce":"0x1","type":"INVOKE","sender_address":"0x326e3db4580b94948ca9d1d87fa359f2fa047a31a34757734a86aa4231fb9bb","calldata":[]}`
 
 		invokeTxByte, err := json.Marshal(invokeTx)
 		require.NoError(t, err)

rpc/trace.go

@@ -136,14 +136,27 @@ func (h *Handler) TraceTransactionV0_6(ctx context.Context, hash felt.Felt) (*vm
 }
 
 func (h *Handler) traceTransaction(ctx context.Context, hash *felt.Felt, v0_6Response bool) (*vm.TransactionTrace, *jsonrpc.Error) {
-	_, _, blockNumber, err := h.bcReader.Receipt(hash)
+	_, blockHash, _, err := h.bcReader.Receipt(hash)
 	if err != nil {
 		return nil, ErrTxnHashNotFound
 	}
 
-	block, err := h.bcReader.BlockByNumber(blockNumber)
-	if err != nil {
-		return nil, ErrBlockNotFound
+	var block *core.Block
+	isPendingBlock := blockHash == nil
+	if isPendingBlock {
+		var pending blockchain.Pending
+		pending, err = h.bcReader.Pending()
+		if err != nil {
+			// for traceTransaction handlers there is no block not found error
+			return nil, ErrTxnHashNotFound
+		}
+		block = pending.Block
+	} else {
+		block, err = h.bcReader.BlockByHash(blockHash)
+		if err != nil {
+			// for traceTransaction handlers there is no block not found error
+			return nil, ErrTxnHashNotFound
+		}
 	}
 
 	txIndex := slices.IndexFunc(block.Transactions, func(tx core.Transaction) bool {