Merge pull request #526 from onflow/add-state-building-tests

Add an E2E test for filling the EVM state with blocks & transactions

tests/e2e_web3js_test.go

@@ -24,6 +24,10 @@ var (
 
 func TestWeb3_E2E(t *testing.T) {
 
+	t.Run("build EVM state", func(t *testing.T) {
+		runWeb3Test(t, "build_evm_state_test")
+	})
+
 	t.Run("test setup sanity check", func(t *testing.T) {
 		runWeb3Test(t, "setup_test")
 	})

tests/web3js/build_evm_state_test.js

@@ -0,0 +1,112 @@
+const utils = require('web3-utils')
+const { assert } = require('chai')
+const conf = require('./config')
+const helpers = require('./helpers')
+const web3 = conf.web3
+
+it('should handle a large number of EVM interactions', async () => {
+    let latest = await web3.eth.getBlockNumber()
+    assert.equal(latest, 2n)
+
+    let eoaCount = 20
+    let accounts = []
+
+    // Generate 20 EOAs
+    // Fund them with some arbitrary number of tokens
+    // Make them do transfers to each other
+
+    for (let i = 0; i < eoaCount; i++) {
+        let receiver = web3.eth.accounts.create()
+
+        let transferValue = utils.toWei('0.15', 'ether')
+        let transfer = await helpers.signAndSend({
+            from: conf.eoa.address,
+            to: receiver.address,
+            value: transferValue,
+            gasPrice: conf.minGasPrice,
+            gasLimit: 21_000,
+        })
+
+        assert.equal(transfer.receipt.status, conf.successStatus)
+        assert.equal(transfer.receipt.from, conf.eoa.address)
+        assert.equal(transfer.receipt.to, receiver.address)
+
+        // check balance was moved
+        let receiverWei = await web3.eth.getBalance(receiver.address)
+        assert.equal(receiverWei, transferValue)
+
+        accounts.push(receiver)
+    }
+
+    let senderBalance = await web3.eth.getBalance(conf.eoa.address)
+    assert.equal(senderBalance, 1999999999937000000n)
+
+    let transferAmounts = ['0.01', '0.03', '0.05']
+    for (let i = 0; i < eoaCount; i++) {
+        let sender = accounts[i]
+
+        for (let j = 0; j < 3; j++) {
+            let receiver = randomItem(accounts)
+
+            let amount = randomItem(transferAmounts)
+            let transferValue = utils.toWei(amount, 'ether')
+            let transfer = await helpers.signAndSendFrom(sender, {
+                from: sender.address,
+                to: receiver.address,
+                value: transferValue,
+                gasPrice: conf.minGasPrice,
+                gasLimit: 21_000,
+            })
+
+            assert.equal(transfer.receipt.status, conf.successStatus)
+            assert.equal(transfer.receipt.from, sender.address)
+            assert.equal(transfer.receipt.to, receiver.address)
+        }
+    }
+
+    latest = await web3.eth.getBlockNumber()
+    assert.equal(latest, 82n)
+
+    for (let i = 0; i < eoaCount; i++) {
+        let sender = accounts[i]
+
+        let deployed = await helpers.deployContractFrom(sender, 'storage')
+        let contractAddress = deployed.receipt.contractAddress
+
+        assert.equal(deployed.receipt.status, conf.successStatus)
+        assert.isString(contractAddress)
+        assert.equal(deployed.receipt.from, sender.address)
+
+        let storeNumber = Math.floor(Math.random() * 10_000)
+        // set the value on the contract, to its current value
+        let updateData = deployed.contract.methods.store(storeNumber).encodeABI()
+        // store a value in the contract
+        let res = await helpers.signAndSendFrom(sender, {
+            from: sender.address,
+            to: contractAddress,
+            data: updateData,
+            value: '0',
+            gasPrice: conf.minGasPrice,
+        })
+        assert.equal(res.receipt.status, conf.successStatus)
+
+        sender = randomItem(accounts)
+        let sumA = Math.floor(Math.random() * 10_000)
+        let sumB = Math.floor(Math.random() * 100_000)
+        res = await helpers.signAndSendFrom(sender, {
+            from: sender.address,
+            to: contractAddress,
+            data: deployed.contract.methods.sum(sumA, sumB).encodeABI(),
+            gas: 55_000,
+            gasPrice: conf.minGasPrice
+        })
+        assert.equal(res.receipt.status, conf.successStatus)
+    }
+
+    latest = await web3.eth.getBlockNumber()
+    assert.equal(latest, 142n)
+})
+
+function randomItem(items) {
+    return items[Math.floor(Math.random() * items.length)]
+}

tests/web3js/helpers.js

@@ -36,6 +36,30 @@ async function deployContract(name) {
   }
 }
 
+async function deployContractFrom(from, name) {
+  const abi = require(`../fixtures/${name}ABI.json`)
+  const code = await fs.promises.readFile(`${__dirname}/../fixtures/${name}.byte`, 'utf8')
+  const contractABI = new web3.eth.Contract(abi, { handleReverted: true })
+
+  let data = contractABI
+    .deploy({ data: `0x${code}` })
+    .encodeABI()
+
+  let signed = await from.signTransaction({
+    from: from.address,
+    data: data,
+    value: '0',
+    gasPrice: conf.minGasPrice,
+  })
+
+  let receipt = await web3.eth.sendSignedTransaction(signed.rawTransaction)
+
+  return {
+    contract: new web3.eth.Contract(abi, receipt.contractAddress, { handleReverted: true }),
+    receipt: receipt
+  }
+}
+
 // signAndSend signs a transactions and submits it to the network,
 // returning a transaction hash and receipt
 async function signAndSend(tx) {
@@ -49,6 +73,19 @@ async function signAndSend(tx) {
   }
 }
 
+// signAndSendFrom signs a transactions from the given EOA and submits it
+// to the network, returning a transaction hash and receipt
+async function signAndSendFrom(from, tx) {
+  const signedTx = await from.signTransaction(tx)
+  // send transaction and make sure interaction was success
+  const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction)
+
+  return {
+    hash: signedTx.transactionHash,
+    receipt: receipt,
+  }
+}
+
 // callRPCMethod accepts a method name and its params and
 // makes a POST request to the JSON-RPC API server.
 // Returns a promise for the response.
@@ -67,4 +104,6 @@ async function callRPCMethod(methodName, params) {
 
 exports.signAndSend = signAndSend
 exports.deployContract = deployContract
+exports.deployContractFrom = deployContractFrom
 exports.callRPCMethod = callRPCMethod
+exports.signAndSendFrom = signAndSendFrom