Add acceptance test for getStorageAt (#664)

* Add getStorageAt test

Signed-off-by: lukelee-sl <[email protected]>

* fix test to call contract function

Signed-off-by: lukelee-sl <[email protected]>

* update name of test

Signed-off-by: lukelee-sl <[email protected]>

* fix getStorageAt test

Signed-off-by: lukelee-sl <[email protected]>

Signed-off-by: lukelee-sl <[email protected]>

Author: lukelee-sl

packages/server/tests/acceptance/rpc.spec.ts

@@ -30,11 +30,13 @@ import TokenCreateJson from '../contracts/TokenCreateContract.json';
 // local resources
 import parentContractJson from '../contracts/Parent.json';
 import basicContractJson from '../contracts/Basic.json';
+import storageContractJson from '../contracts/Storage.json';
 import reverterContractJson from '../contracts/Reverter.json';
 import logsContractJson from '../contracts/Logs.json';
 import { predefined } from '../../../relay/src/lib/errors/JsonRpcError';
 import { EthImpl } from '@hashgraph/json-rpc-relay/src/lib/eth';
 import constants from '@hashgraph/json-rpc-relay/src/lib/constants';
+import { resourceLimits } from 'worker_threads';
 
 describe('@api RPC Server Acceptance Tests', function () {
     this.timeout(240 * 1000); // 240 seconds
@@ -1162,6 +1164,52 @@ describe('@api RPC Server Acceptance Tests', function () {
             });
         });
 
+        // Test state changes with getStorageAt
+        describe('eth_getStorageAt', () => {
+            let storageContract, contractId, evmAddress;
+            const STORAGE_CONTRACT_UPDATE = "0x2de4e884";
+
+            before(async () => {
+                storageContract = await servicesNode.deployContract(storageContractJson);
+                // Wait for creation to propagate
+                await mirrorNode.get(`/contracts/${storageContract.contractId}`);
+
+                contractId = storageContract.contractId;
+                evmAddress = `0x${storageContract.contractId.toSolidityAddress()}`;
+            });
+
+            it('should execute "eth_getStorageAt" request to get state changes', async function () {
+                const BEGIN_EXPECTED_STORAGE_VAL = "0x000000000000000000000000000000000000000000000000000000000000000f";
+                const END_EXPECTED_STORAGE_VAL = "0x0000000000000000000000000000000000000000000000000000000000000008";
+
+                const beginStorageVal = await relay.call('eth_getStorageAt', [`${contractId}`, '0x', 'latest'] );
+                expect(beginStorageVal).to.eq(BEGIN_EXPECTED_STORAGE_VAL)
+
+                const gasPrice = await relay.gasPrice();
+                const transaction = {
+                    value: 0,
+                    gasLimit: 50000,
+                    chainId: Number(CHAIN_ID),
+                    to: evmAddress,
+                    nonce: await relay.getAccountNonce(accounts[1].address),
+                    gasPrice: gasPrice,
+                    data: STORAGE_CONTRACT_UPDATE,
+                    maxPriorityFeePerGas: gasPrice,
+                    maxFeePerGas: gasPrice,
+                    type: 2
+                };
+
+                const signedTx = await accounts[1].wallet.signTransaction(transaction);
+                await relay.call('eth_sendRawTransaction', [signedTx]);
+
+                // wait for the transaction to propogate to mirror node
+                await new Promise(r => setTimeout(r, 2000));
+
+                const storageVal = await relay.call('eth_getStorageAt', [`${contractId}`, '0x', 'latest'] );
+                expect(storageVal).to.eq(END_EXPECTED_STORAGE_VAL)
+            });
+        });
+
         // Only run the following tests against a local node since they only work with the genesis account
         if (process.env.LOCAL_NODE && process.env.LOCAL_NODE !== 'false') {
             describe('Gas Price related RPC endpoints', () => {

packages/server/tests/contracts/Storage.json

@@ -0,0 +1,18 @@
+{
+  "_format": "hh-sol-artifact-1",
+  "contractName": "Storage",
+  "sourceName": "contracts/Storage.sol",
+  "abi": [
+    {
+      "inputs": [],
+      "name": "updateStoredUInt",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    }
+  ],
+  "bytecode": "0x6080604052600f600055348015601457600080fd5b50606e8060226000396000f3fe6080604052348015600f57600080fd5b506004361060285760003560e01c80632de4e88414602d575b600080fd5b60366008600055565b00fea26469706673582212204f4929609314772906604fbf3fa15708239abd76b6d2a022fa89ae0e0b888bb264736f6c63430008090033",
+  "deployedBytecode": "0x6080604052348015600f57600080fd5b506004361060285760003560e01c80632de4e88414602d575b600080fd5b60366008600055565b00fea26469706673582212204f4929609314772906604fbf3fa15708239abd76b6d2a022fa89ae0e0b888bb264736f6c63430008090033",
+  "linkReferences": {},
+  "deployedLinkReferences": {}
+}

packages/server/tests/contracts/Storage.sol

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: Apache-2.0
+pragma solidity >=0.5.0 <0.9.0;
+
+contract Storage {
+    uint storedUint = 15;
+
+    function updateStoredUInt() public {
+        storedUint = 8;
+    }
+}