// VulcanizeDB // Copyright © 2019 Vulcanize // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU Affero General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Affero General Public License for more details. // You should have received a copy of the GNU Affero General Public License // along with this program. If not, see . package eth_test import ( "bytes" "context" "io/ioutil" "math/big" "time" "github.com/ethereum/go-ethereum/accounts/abi" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rpc" "github.com/ethereum/go-ethereum/statediff" sdtypes "github.com/ethereum/go-ethereum/statediff/types" "github.com/jmoiron/sqlx" . "github.com/onsi/ginkgo" . "github.com/onsi/gomega" "github.com/vulcanize/ipld-eth-server/pkg/eth" "github.com/vulcanize/ipld-eth-server/pkg/eth/test_helpers" "github.com/vulcanize/ipld-eth-server/pkg/shared" ethServerShared "github.com/vulcanize/ipld-eth-server/pkg/shared" ) var ( parsedABI abi.ABI ) func init() { // load abi abiBytes, err := ioutil.ReadFile("./test_helpers/abi.json") if err != nil { panic(err) } parsedABI, err = abi.JSON(bytes.NewReader(abiBytes)) if err != nil { panic(err) } } var _ = Describe("eth state reading tests", func() { const chainLength = 5 var ( blocks []*types.Block receipts []types.Receipts chain *core.BlockChain db *sqlx.DB api *eth.PublicEthAPI backend *eth.Backend chainConfig = params.TestChainConfig mockTD = big.NewInt(1337) expectedCanonicalHeader map[string]interface{} ) It("test init", func() { // db and type initializations var err error db = shared.SetupDB() transformer := eth.SetupTestStateDiffIndexer(ctx, chainConfig, test_helpers.Genesis.Hash()) backend, err = eth.NewEthBackend(db, ð.Config{ ChainConfig: chainConfig, VMConfig: vm.Config{}, RPCGasCap: big.NewInt(10000000000), // Max gas capacity for a rpc call. GroupCacheConfig: ðServerShared.GroupCacheConfig{ StateDB: ethServerShared.GroupConfig{ Name: "eth_state_test", CacheSizeInMB: 8, CacheExpiryInMins: 60, LogStatsIntervalInSecs: 0, }, }, }) Expect(err).ToNot(HaveOccurred()) api, _ = eth.NewPublicEthAPI(backend, nil, false, false, false) // make the test blockchain (and state) blocks, receipts, chain = test_helpers.MakeChain(chainLength, test_helpers.Genesis, test_helpers.TestChainGen) params := statediff.Params{ IntermediateStateNodes: true, IntermediateStorageNodes: true, } canonicalHeader := blocks[1].Header() expectedCanonicalHeader = map[string]interface{}{ "number": (*hexutil.Big)(canonicalHeader.Number), "hash": canonicalHeader.Hash(), "parentHash": canonicalHeader.ParentHash, "nonce": canonicalHeader.Nonce, "mixHash": canonicalHeader.MixDigest, "sha3Uncles": canonicalHeader.UncleHash, "logsBloom": canonicalHeader.Bloom, "stateRoot": canonicalHeader.Root, "miner": canonicalHeader.Coinbase, "difficulty": (*hexutil.Big)(canonicalHeader.Difficulty), "extraData": hexutil.Bytes([]byte{}), "size": hexutil.Uint64(canonicalHeader.Size()), "gasLimit": hexutil.Uint64(canonicalHeader.GasLimit), "gasUsed": hexutil.Uint64(canonicalHeader.GasUsed), "timestamp": hexutil.Uint64(canonicalHeader.Time), "transactionsRoot": canonicalHeader.TxHash, "receiptsRoot": canonicalHeader.ReceiptHash, "totalDifficulty": (*hexutil.Big)(mockTD), } // iterate over the blocks, generating statediff payloads, and transforming the data into Postgres builder := statediff.NewBuilder(chain.StateCache()) for i, block := range blocks { var args statediff.Args var rcts types.Receipts if i == 0 { args = statediff.Args{ OldStateRoot: common.Hash{}, NewStateRoot: block.Root(), BlockNumber: block.Number(), BlockHash: block.Hash(), } } else { args = statediff.Args{ OldStateRoot: blocks[i-1].Root(), NewStateRoot: block.Root(), BlockNumber: block.Number(), BlockHash: block.Hash(), } rcts = receipts[i-1] } diff, err := builder.BuildStateDiffObject(args, params) Expect(err).ToNot(HaveOccurred()) tx, err := transformer.PushBlock(block, rcts, mockTD) Expect(err).ToNot(HaveOccurred()) for _, node := range diff.Nodes { err = transformer.PushStateNode(tx, node, block.Hash().String()) Expect(err).ToNot(HaveOccurred()) } err = tx.Submit(err) Expect(err).ToNot(HaveOccurred()) } // Insert some non-canonical data into the database so that we test our ability to discern canonicity indexAndPublisher := eth.SetupTestStateDiffIndexer(ctx, chainConfig, test_helpers.Genesis.Hash()) tx, err := indexAndPublisher.PushBlock(test_helpers.MockBlock, test_helpers.MockReceipts, test_helpers.MockBlock.Difficulty()) Expect(err).ToNot(HaveOccurred()) err = tx.Submit(err) Expect(err).ToNot(HaveOccurred()) // The non-canonical header has a child tx, err = indexAndPublisher.PushBlock(test_helpers.MockChild, test_helpers.MockReceipts, test_helpers.MockChild.Difficulty()) Expect(err).ToNot(HaveOccurred()) hash := sdtypes.CodeAndCodeHash{ Hash: test_helpers.CodeHash, Code: test_helpers.ContractCode, } err = indexAndPublisher.PushCodeAndCodeHash(tx, hash) Expect(err).ToNot(HaveOccurred()) // wait for tx batch process to complete. time.Sleep(10000 * time.Millisecond) err = tx.Submit(err) Expect(err).ToNot(HaveOccurred()) }) defer It("test teardown", func() { shared.TearDownDB(db) chain.Stop() }) Describe("eth_call", func() { It("Applies call args (tx data) on top of state, returning the result (e.g. a Getter method call)", func() { data, err := parsedABI.Pack("data") Expect(err).ToNot(HaveOccurred()) bdata := hexutil.Bytes(data) callArgs := eth.CallArgs{ To: &test_helpers.ContractAddr, Data: &bdata, } // Before contract deployment, returns nil res, err := api.Call(context.Background(), callArgs, rpc.BlockNumberOrHashWithNumber(0), nil) Expect(err).ToNot(HaveOccurred()) Expect(res).To(BeNil()) res, err = api.Call(context.Background(), callArgs, rpc.BlockNumberOrHashWithNumber(1), nil) Expect(err).ToNot(HaveOccurred()) Expect(res).To(BeNil()) // After deployment res, err = api.Call(context.Background(), callArgs, rpc.BlockNumberOrHashWithNumber(2), nil) Expect(err).ToNot(HaveOccurred()) expectedRes := hexutil.Bytes(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) Expect(res).To(Equal(expectedRes)) res, err = api.Call(context.Background(), callArgs, rpc.BlockNumberOrHashWithNumber(3), nil) Expect(err).ToNot(HaveOccurred()) expectedRes = hexutil.Bytes(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000003")) Expect(res).To(Equal(expectedRes)) res, err = api.Call(context.Background(), callArgs, rpc.BlockNumberOrHashWithNumber(4), nil) Expect(err).ToNot(HaveOccurred()) expectedRes = hexutil.Bytes(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000009")) Expect(res).To(Equal(expectedRes)) res, err = api.Call(context.Background(), callArgs, rpc.BlockNumberOrHashWithNumber(5), nil) Expect(err).ToNot(HaveOccurred()) expectedRes = hexutil.Bytes(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000000")) Expect(res).To(Equal(expectedRes)) }) }) var ( expectedContractBalance = (*hexutil.Big)(common.Big0) expectedBankBalanceBlock0 = (*hexutil.Big)(test_helpers.TestBankFunds) expectedAcct1BalanceBlock1 = (*hexutil.Big)(big.NewInt(10000)) expectedBankBalanceBlock1 = (*hexutil.Big)(new(big.Int).Sub(test_helpers.TestBankFunds, big.NewInt(10000))) expectedAcct2BalanceBlock2 = (*hexutil.Big)(big.NewInt(1000)) expectedBankBalanceBlock2 = (*hexutil.Big)(new(big.Int).Sub(expectedBankBalanceBlock1.ToInt(), big.NewInt(1000))) expectedAcct2BalanceBlock3 = (*hexutil.Big)(new(big.Int).Add(expectedAcct2BalanceBlock2.ToInt(), test_helpers.MiningReward)) expectedAcct2BalanceBlock4 = (*hexutil.Big)(new(big.Int).Add(expectedAcct2BalanceBlock3.ToInt(), test_helpers.MiningReward)) expectedAcct1BalanceBlock5 = (*hexutil.Big)(new(big.Int).Add(expectedAcct1BalanceBlock1.ToInt(), test_helpers.MiningReward)) ) Describe("eth_getBalance", func() { It("Retrieves the eth balance for the provided account address at the block with the provided number", func() { bal, err := api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithNumber(0)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock0)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithNumber(1)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithNumber(1)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(1)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithNumber(1)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithNumber(2)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithNumber(2)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(2)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithNumber(2)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithNumber(3)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithNumber(3)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock3)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(3)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithNumber(3)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithNumber(4)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithNumber(4)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock4)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(4)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithNumber(4)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithNumber(5)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock5)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithNumber(5)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock4)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(5)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithNumber(5)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) }) It("Retrieves the eth balance for the provided account address at the block with the provided hash", func() { bal, err := api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithHash(blocks[0].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock0)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithHash(blocks[1].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithHash(blocks[1].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) _, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[1].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithHash(blocks[1].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithHash(blocks[2].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithHash(blocks[2].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[2].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithHash(blocks[2].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithHash(blocks[3].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithHash(blocks[3].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock3)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[3].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithHash(blocks[3].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithHash(blocks[4].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock1)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithHash(blocks[4].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock4)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[4].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithHash(blocks[4].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) bal, err = api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithHash(blocks[5].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct1BalanceBlock5)) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithHash(blocks[5].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedAcct2BalanceBlock4)) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[5].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedContractBalance)) bal, err = api.GetBalance(ctx, test_helpers.TestBankAddress, rpc.BlockNumberOrHashWithHash(blocks[5].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal(expectedBankBalanceBlock2)) }) It("Returns `0` for an account it cannot find the balance for an account at the provided block number", func() { bal, err := api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithNumber(0)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithNumber(0)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(0)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) }) It("Returns `0` for an error for an account it cannot find the balance for an account at the provided block hash", func() { bal, err := api.GetBalance(ctx, test_helpers.Account1Addr, rpc.BlockNumberOrHashWithHash(blocks[0].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) bal, err = api.GetBalance(ctx, test_helpers.Account2Addr, rpc.BlockNumberOrHashWithHash(blocks[0].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) bal, err = api.GetBalance(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[0].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(bal).To(Equal((*hexutil.Big)(common.Big0))) }) }) Describe("eth_getCode", func() { It("Retrieves the code for the provided contract address at the block with the provided number", func() { code, err := api.GetCode(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(3)) Expect(err).ToNot(HaveOccurred()) Expect(code).To(Equal((hexutil.Bytes)(test_helpers.ContractCode))) code, err = api.GetCode(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(5)) Expect(err).ToNot(HaveOccurred()) Expect(code).To(Equal((hexutil.Bytes)(test_helpers.ContractCode))) }) It("Retrieves the code for the provided contract address at the block with the provided hash", func() { code, err := api.GetCode(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[3].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(code).To(Equal((hexutil.Bytes)(test_helpers.ContractCode))) code, err = api.GetCode(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithHash(blocks[5].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(code).To(Equal((hexutil.Bytes)(test_helpers.ContractCode))) }) It("Returns `nil` for an account it cannot find the code for", func() { code, err := api.GetCode(ctx, randomAddr, rpc.BlockNumberOrHashWithHash(blocks[3].Hash(), true)) Expect(err).ToNot(HaveOccurred()) Expect(code).To(BeEmpty()) }) It("Returns `nil` for a contract that doesn't exist at this height", func() { code, err := api.GetCode(ctx, test_helpers.ContractAddr, rpc.BlockNumberOrHashWithNumber(0)) Expect(err).ToNot(HaveOccurred()) Expect(code).To(BeEmpty()) }) }) Describe("eth_getStorageAt", func() { It("Returns empty slice if it tries to access a contract which does not exist", func() { storage, err := api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.ContractSlotKeyHash.Hex(), rpc.BlockNumberOrHashWithNumber(0)) Expect(err).NotTo(HaveOccurred()) Expect(storage).To(Equal(hexutil.Bytes(eth.EmptyNodeValue))) storage, err = api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.ContractSlotKeyHash.Hex(), rpc.BlockNumberOrHashWithNumber(1)) Expect(err).NotTo(HaveOccurred()) Expect(storage).To(Equal(hexutil.Bytes(eth.EmptyNodeValue))) }) It("Returns empty slice if it tries to access a contract slot which does not exist", func() { storage, err := api.GetStorageAt(ctx, test_helpers.ContractAddr, randomHash.Hex(), rpc.BlockNumberOrHashWithNumber(2)) Expect(err).NotTo(HaveOccurred()) Expect(storage).To(Equal(hexutil.Bytes(eth.EmptyNodeValue))) }) It("Retrieves the storage value at the provided contract address and storage leaf key at the block with the provided hash or number", func() { // After deployment val, err := api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.IndexOne, rpc.BlockNumberOrHashWithNumber(2)) Expect(err).ToNot(HaveOccurred()) expectedRes := hexutil.Bytes(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001")) Expect(val).To(Equal(expectedRes)) val, err = api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.IndexOne, rpc.BlockNumberOrHashWithNumber(3)) Expect(err).ToNot(HaveOccurred()) expectedRes = hexutil.Bytes(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000003")) Expect(val).To(Equal(expectedRes)) val, err = api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.IndexOne, rpc.BlockNumberOrHashWithNumber(4)) Expect(err).ToNot(HaveOccurred()) expectedRes = hexutil.Bytes(common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000009")) Expect(val).To(Equal(expectedRes)) val, err = api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.IndexOne, rpc.BlockNumberOrHashWithNumber(5)) Expect(err).ToNot(HaveOccurred()) Expect(val).To(Equal(hexutil.Bytes(eth.EmptyNodeValue))) }) It("Throws an error for a non-existing block hash", func() { _, err := api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.IndexOne, rpc.BlockNumberOrHashWithHash(randomHash, true)) Expect(err).To(HaveOccurred()) Expect(err).To(MatchError("header for hash not found")) }) It("Throws an error for a non-existing block number", func() { _, err := api.GetStorageAt(ctx, test_helpers.ContractAddr, test_helpers.IndexOne, rpc.BlockNumberOrHashWithNumber(chainLength+1)) Expect(err).To(HaveOccurred()) Expect(err).To(MatchError("header not found")) }) }) Describe("eth_getHeaderByNumber", func() { It("Finds the canonical header based on the header's weight relative to others at the provided height", func() { header, err := api.GetHeaderByNumber(ctx, number) Expect(err).ToNot(HaveOccurred()) Expect(header).To(Equal(expectedCanonicalHeader)) }) }) })