make sure getBalance() works

2 files changed, 13 insertions, 3 deletions

diff --git a/examples/multicoin/main.go b/examples/multicoin/main.go
index ad23e32..9d1970a 100644
--- a/examples/multicoin/main.go
+++ b/examples/multicoin/main.go
@@ -55,7 +55,7 @@ func main() {
 	bob, _ := coreth.NewKey(rand.Reader)
 
 	g := new(core.Genesis)
-	b := `{"config":{"chainId":1,"homesteadBlock":0,"daoForkBlock":0,"daoForkSupport":true,"eip150Block":0,"eip150Hash":"0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0","eip155Block":0,"eip158Block":0,"byzantiumBlock":0,"constantinopleBlock":0,"petersburgBlock":0},"nonce":"0x0","timestamp":"0x0","extraData":"0x00","gasLimit":"0x5f5e100","difficulty":"0x0","mixHash":"0x0000000000000000000000000000000000000000000000000000000000000000","coinbase":"0x0000000000000000000000000000000000000000","alloc":{"751a0b96e1042bee789452ecb20253fba40dbe85":{"balance":"0x1000000000000000", "mcbalance": {"0x0000000000000000000000000000000000000000000000000000000000000000": 1000000000000000000}}, "0100000000000000000000000000000000000000": {"code": "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", "balance": "0x0", "mcbalance": {}}},"number":"0x0","gasUsed":"0x0","parentHash":"0x0000000000000000000000000000000000000000000000000000000000000000"}`
+	b := `{"config":{"chainId":1,"homesteadBlock":0,"daoForkBlock":0,"daoForkSupport":true,"eip150Block":0,"eip150Hash":"0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0","eip155Block":0,"eip158Block":0,"byzantiumBlock":0,"constantinopleBlock":0,"petersburgBlock":0},"nonce":"0x0","timestamp":"0x0","extraData":"0x00","gasLimit":"0x5f5e100","difficulty":"0x0","mixHash":"0x0000000000000000000000000000000000000000000000000000000000000000","coinbase":"0x0000000000000000000000000000000000000000","alloc":{"751a0b96e1042bee789452ecb20253fba40dbe85":{"balance":"0x1000000000000000", "mcbalance": {"0x0000000000000000000000000000000000000000000000000000000000000000": 1000000000000000000}}, "0100000000000000000000000000000000000000": {"code": "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", "balance": "0x0", "mcbalance": {}}},"number":"0x0","gasUsed":"0x0","parentHash":"0x0000000000000000000000000000000000000000000000000000000000000000"}`
 	k := "0xabd71b35d559563fea757f0f5edbde286fb8c043105b15abb7cd57189306d7d1"
 	err := json.Unmarshal([]byte(b), g)
 	checkError(err)
@@ -149,6 +149,15 @@ func main() {
 					chain.AddRemoteTxs([]*types.Transaction{signedTx})
 					nonce++
 				}
+				code, err = a.Pack("updateBalance", big.NewInt(0))
+				tx = types.NewTransaction(nonce, contractAddr, big.NewInt(0), uint64(gasLimit), gasPrice, code)
+				signedTx, err = types.SignTx(tx, types.NewEIP155Signer(chainID), genKey.PrivateKey)
+				checkError(err)
+				chain.AddRemoteTxs([]*types.Transaction{signedTx})
+				nonce++
+
+				checkError(err)
+
 			}()
 		}
 		return false
diff --git a/examples/multicoin/mc_test.sol b/examples/multicoin/mc_test.sol
index 031cba0..a7d468e 100644
--- a/examples/multicoin/mc_test.sol
+++ b/examples/multicoin/mc_test.sol
@@ -2,16 +2,17 @@ pragma solidity >=0.6.0;
 
 contract MCTest {
     address constant MultiCoin = 0x0100000000000000000000000000000000000000;
+    uint256 balance;
     constructor() public {
         // enable multi-coin functionality (it is disabled by default)
         (bool success,) = MultiCoin.delegatecall(abi.encodeWithSignature("enableMultiCoin()"));
         require(success);
     }
 
-    function getBalance(uint256 coinid) public returns (uint256) {
+    function updateBalance(uint256 coinid) public {
         (bool success, bytes memory data) = MultiCoin.delegatecall(abi.encodeWithSignature("getBalance(uint256)", coinid));
         require(success);
-        return abi.decode(data, (uint256));
+        balance = abi.decode(data, (uint256));
     }
 
     function deposit() public payable {}