ethService.spec.ts

import {
  ChainError,
  ChainRpcProvider,
  FullChannelState,
  IChainServiceStore,
  IChannelSigner,
  MinimalTransaction,
  Result,
  StoredTransaction,
  TransactionReason,
} from "@connext/vector-types";
import {
  ChannelSigner,
  createTestChannelState,
  expect,
  getTestLoggers,
  MemoryStoreService,
  mkAddress,
  mkBytes32,
  mkHash,
} from "@connext/vector-utils";
import { AddressZero, One, Zero } from "@ethersproject/constants";
import { TransactionReceipt, TransactionResponse } from "@ethersproject/providers";
import { BigNumber } from "ethers";
import { parseUnits } from "ethers/lib/utils";
import { restore, reset, createStubInstance, SinonStubbedInstance, stub, SinonStub } from "sinon";
import { v4 as uuidV4 } from "uuid";

import { BIG_GAS_PRICE, EthereumChainService } from "./ethService";

let storeMock: SinonStubbedInstance<IChainServiceStore>;
let signer: SinonStubbedInstance<IChannelSigner>;
let ethService: EthereumChainService;
let provider1337: SinonStubbedInstance<ChainRpcProvider>;
let provider1338: SinonStubbedInstance<ChainRpcProvider>;

let sendTxWithRetriesMock: SinonStub;
let approveMock: SinonStub;
let getCodeMock: SinonStub;
let getOnchainBalanceMock: SinonStub;
let waitForConfirmation: SinonStub<[chainId: number, responses: TransactionResponse[]], Promise<TransactionReceipt>>;
let getGasPrice: SinonStub<[chainId: number], Promise<Result<BigNumber, ChainError>>>;

let channelState: FullChannelState;

const assertResult = (result: Result<any>, isError: boolean, unwrappedVal?: any) => {
  if (isError) {
    expect(result.isError).to.be.true;
    if (unwrappedVal) {
      expect(result.getError()?.message).to.be.eq(unwrappedVal);
    }
  } else {
    expect(result.isError).to.be.false;
    if (unwrappedVal) {
      expect(result.getValue()).to.deep.eq(unwrappedVal);
    }
  }
};

const txResponse = {
  chainId: 1337,
  confirmations: 1,
  data: "0x",
  from: AddressZero,
  gasLimit: One,
  gasPrice: One,
  hash: mkHash(),
  nonce: 1,
  value: Zero,
  wait: () => Promise.resolve({} as TransactionReceipt),
};

const txReceipt: TransactionReceipt = {
  blockHash: mkHash("0xabc"),
  blockNumber: 123,
  byzantium: true,
  confirmations: 1,
  contractAddress: mkAddress("0xa"),
  cumulativeGasUsed: BigNumber.from(21000),
  from: txResponse.from,
  gasUsed: BigNumber.from(21000),
  logs: [],
  logsBloom: "0x",
  to: mkAddress("0xbbb"),
  transactionHash: txResponse.hash,
  transactionIndex: 1,
  status: 1,
};

const { log } = getTestLoggers("ethService");
describe("ethService unit test", () => {
  beforeEach(() => {
    // eth service deps
    storeMock = createStubInstance(MemoryStoreService);

    signer = createStubInstance(ChannelSigner);
    signer.connect.returns(signer as any);
    (signer as any)._isSigner = true;

    const _provider = createStubInstance(ChainRpcProvider);
    _provider.getTransaction.resolves(txResponse);
    provider1337 = _provider;
    provider1338 = _provider;
    (signer as any).provider = provider1337;

    // create eth service class
    ethService = new EthereumChainService(
      storeMock,
      {
        1337: provider1337,
        1338: provider1338,
      },
      signer,
      log,
    );

    // stubs with default friendly behavior
    getCodeMock = stub(ethService, "getCode").resolves(Result.ok("0x"));
    approveMock = stub(ethService, "approveTokens").resolves(Result.ok(txReceipt));
    getOnchainBalanceMock = stub(ethService, "getOnchainBalance").resolves(Result.ok(BigNumber.from("100")));
    getGasPrice = stub(ethService, "getGasPrice").resolves(Result.ok(parseUnits("1", "gwei")));

    // channel state
    const test = createTestChannelState("create");
    channelState = test.channel;
    channelState.networkContext.chainId = 1337;
    signer.getAddress.resolves(channelState.alice);
  });

  afterEach(() => {
    restore();
    reset();
  });

  describe("sendDeployChannelTx", () => {
    beforeEach(() => {
      sendTxWithRetriesMock = stub(ethService, "sendTxWithRetries").resolves(Result.ok(txReceipt));
    });

    it("errors if cannot get a signer", async () => {
      channelState.networkContext.chainId = 1234;
      const result = await ethService.sendDeployChannelTx(channelState);
      assertResult(result, true, ChainError.reasons.SignerNotFound);
    });

    it("errors if multisig code cannot be retrieved", async () => {
      getCodeMock.resolves(Result.fail(new ChainError("getCode error")));
      const result = await ethService.sendDeployChannelTx(channelState);
      assertResult(result, true, "getCode error");
    });

    it("errors if multisig is already deployed", async () => {
      getCodeMock.resolves(Result.ok(mkHash("0xabc")));
      const result = await ethService.sendDeployChannelTx(channelState);
      assertResult(result, true, ChainError.reasons.MultisigDeployed);
    });

    it("errors if multisig deployment fails without deposit", async () => {
      sendTxWithRetriesMock.resolves(Result.fail(new ChainError(ChainError.reasons.TxReverted)));
      const result = await ethService.sendDeployChannelTx(channelState);
      assertResult(result, true, ChainError.reasons.TxReverted);
    });

    it("errors if multisig deployment returns nothing", async () => {
      sendTxWithRetriesMock.resolves(Result.ok(undefined));
      const result = await ethService.sendDeployChannelTx(channelState);
      assertResult(result, true, ChainError.reasons.MultisigDeployed);
    });

    it("errors if deposit and is not alice", async () => {
      signer.getAddress.resolves(channelState.bob);
      const result = await ethService.sendDeployChannelTx(channelState, {
        amount: "1",
        assetId: AddressZero,
      });
      assertResult(result, true, ChainError.reasons.FailedToDeploy);
    });

    it("errors if deposit and cannot get onchain balance", async () => {
      getOnchainBalanceMock.resolves(Result.fail(new ChainError(ChainError.reasons.TxNotFound)));
      const result = await ethService.sendDeployChannelTx(channelState, {
        amount: "1",
        assetId: AddressZero,
      });
      assertResult(result, true, ChainError.reasons.TxNotFound);
    });

    it("errors if deposit and not enough onchain balance", async () => {
      getOnchainBalanceMock.resolves(Result.ok(BigNumber.from("9")));
      const result = await ethService.sendDeployChannelTx(channelState, {
        amount: "10",
        assetId: AddressZero,
      });
      assertResult(result, true, ChainError.reasons.NotEnoughFunds);
    });

    it("errors if error on approve", async () => {
      approveMock.resolves(Result.fail(new ChainError(ChainError.reasons.NotEnoughFunds)));
      const result = await ethService.sendDeployChannelTx(channelState, {
        amount: "1",
        assetId: mkAddress("0xa"),
      });
      assertResult(result, true, ChainError.reasons.NotEnoughFunds);
    });

    it("happy: alice can deploy channel without deposit", async () => {
      const result = await ethService.sendDeployChannelTx(channelState);
      assertResult(result, false, txReceipt);
      const call = sendTxWithRetriesMock.getCall(0);
      expect(call.args[0]).to.eq(channelState.channelAddress);
      expect(call.args[1]).to.eq(channelState.networkContext.chainId);
      expect(call.args[2]).to.eq(TransactionReason.deploy);
    });

    it("happy: bob can deploy channel without deposit", async () => {
      signer.getAddress.resolves(channelState.bob);
      const result = await ethService.sendDeployChannelTx(channelState);
      assertResult(result, false, txReceipt);
      const call = sendTxWithRetriesMock.getCall(0);
      expect(call.args[0]).to.eq(channelState.channelAddress);
      expect(call.args[1]).to.eq(channelState.networkContext.chainId);
      expect(call.args[2]).to.eq(TransactionReason.deploy);
    });

    it("happy: calls createChannelAndDepositAlice with native asset if 0x000... deposit", async () => {
      const result = await ethService.sendDeployChannelTx(channelState, {
        amount: "1",
        assetId: AddressZero,
      });
      assertResult(result, false, txReceipt);
      const call = sendTxWithRetriesMock.getCall(0);
      expect(call.args[0]).to.eq(channelState.channelAddress);
      expect(call.args[1]).to.eq(channelState.networkContext.chainId);
      expect(call.args[2]).to.eq(TransactionReason.deployWithDepositAlice);
    });

    it("happy: calls createChannelAndDepositAlice with tokens if token deposit", async () => {
      const result = await ethService.sendDeployChannelTx(channelState, {
        amount: "1",
        assetId: mkAddress("0xa"),
      });
      assertResult(result, false);
      const approveCall = approveMock.getCall(0);
      expect(approveCall.args[0]).to.eq(channelState.channelAddress);
      expect(approveCall.args[1]).to.eq(channelState.networkContext.channelFactoryAddress);
      expect(approveCall.args[2]).to.eq(channelState.alice);
      expect(approveCall.args[3]).to.eq("1");
      expect(approveCall.args[4]).to.eq(mkAddress("0xa"));
      expect(approveCall.args[5]).to.eq(channelState.networkContext.chainId);
      const call = sendTxWithRetriesMock.getCall(0);
      expect(call.args[0]).to.eq(channelState.channelAddress);
      expect(call.args[1]).to.eq(channelState.networkContext.chainId);
      expect(call.args[2]).to.eq("deployWithDepositAlice");
    });
  });

  describe("sendWithdrawTx", () => {
    const minTx: MinimalTransaction = {
      data: mkBytes32("0xabc"),
      to: AddressZero,
      value: 0,
    };
    let sendDeployChannelTxMock: SinonStub;

    beforeEach(() => {
      sendDeployChannelTxMock = stub(ethService, "sendDeployChannelTx").resolves(Result.ok(txReceipt));
      sendTxWithRetriesMock = stub(ethService, "sendTxWithRetries").resolves(Result.ok(txReceipt));
    });

    it("errors if cannot get a signer", async () => {
      channelState.networkContext.chainId = 1234;
      const result = await ethService.sendWithdrawTx(channelState, minTx);
      assertResult(result, true, ChainError.reasons.SignerNotFound);
    });

    it("errors if multisig code cannot be retrieved", async () => {
      getCodeMock.resolves(Result.fail(new ChainError("getCode error")));
      const result = await ethService.sendWithdrawTx(channelState, minTx);
      assertResult(result, true, "getCode error");
    });

    it("errors if channel deployment fails", async () => {
      sendDeployChannelTxMock.resolves(Result.fail(new ChainError(ChainError.reasons.NotEnoughFunds)));
      const result = await ethService.sendWithdrawTx(channelState, minTx);
      assertResult(result, true, ChainError.reasons.FailedToDeploy);
    });

    it("errors if deploy tx throws an error", async () => {
      sendDeployChannelTxMock.resolves(Result.fail(new ChainError(ChainError.reasons.TxReverted)));
      const result = await ethService.sendWithdrawTx(channelState, minTx);
      assertResult(result, true, ChainError.reasons.FailedToDeploy);
    });

    it("happy: if channel is deployed, send withdrawal tx", async () => {
      getCodeMock.resolves(Result.ok(mkHash("0xabc")));
      const result = await ethService.sendWithdrawTx(channelState, minTx);
      expect(sendDeployChannelTxMock.callCount).to.eq(0);
      assertResult(result, false, txReceipt);
    });

    it("happy: if channel is not deployed, deploy channel then send withdrawal tx", async () => {
      const result = await ethService.sendWithdrawTx(channelState, minTx);
      expect(sendDeployChannelTxMock.callCount).to.eq(1);
      expect(sendDeployChannelTxMock.getCall(0).firstArg).to.deep.eq(channelState);
      assertResult(result, false, txReceipt);
    });
  });

  describe("sendDepositTx", () => {
    let sendDeployChannelTxMock: SinonStub;
    let sendDepositATxMock: SinonStub;
    let sendDepositBTxMock: SinonStub;

    beforeEach(() => {
      sendDeployChannelTxMock = stub(ethService, "sendDeployChannelTx").resolves(Result.ok(txReceipt));
      sendDepositATxMock = stub(ethService, "sendDepositATx").resolves(Result.ok(txReceipt));
      sendDepositBTxMock = stub(ethService, "sendDepositBTx").resolves(Result.ok(txReceipt));
      sendTxWithRetriesMock = stub(ethService, "sendTxWithRetries").resolves(Result.ok(txReceipt));
    });

    it("errors if cannot get a signer", async () => {
      channelState.networkContext.chainId = 1234;
      const result = await ethService.sendDepositTx(channelState, channelState.alice, "1", AddressZero);
      assertResult(result, true, ChainError.reasons.SignerNotFound);
    });

    it("errors if sender is not in channel", async () => {
      const result = await ethService.sendDepositTx(channelState, mkAddress("0xababab"), "1", AddressZero);
      assertResult(result, true, ChainError.reasons.SenderNotInChannel);
    });

    it("errors if deposit amount is negative", async () => {
      const result = await ethService.sendDepositTx(channelState, channelState.alice, "-1", AddressZero);
      assertResult(result, true, ChainError.reasons.NegativeDepositAmount);
    });

    it("errors if multisig code cannot be retrieved", async () => {
      getCodeMock.resolves(Result.fail(new ChainError("getCode error")));
      const result = await ethService.sendDepositTx(channelState, channelState.alice, "1", AddressZero);
      assertResult(result, true, "getCode error");
    });

    it("errors if onchain balance returns an error", async () => {
      getCodeMock.resolves(Result.ok(mkHash("0xabc")));
      getOnchainBalanceMock.resolves(Result.fail(new Error("getOnchainBalance error")));
      const result = await ethService.sendDepositTx(channelState, channelState.alice, "1", AddressZero);
      assertResult(result, true, "getOnchainBalance error");
    });

    it("errors if channel is deployed and onchain balance is < send amount", async () => {
      getCodeMock.resolves(Result.ok(mkHash("0xabc")));
      getOnchainBalanceMock.resolves(Result.ok(BigNumber.from(5)));
      const result = await ethService.sendDepositTx(channelState, channelState.alice, "6", AddressZero);
      assertResult(result, true, ChainError.reasons.NotEnoughFunds);
    });

    it("happy: alice deploys channel with deposit if not deployed", async () => {
      const result = await ethService.sendDepositTx(channelState, channelState.alice, "1", AddressZero);
      assertResult(result, false, txReceipt);
      expect(sendDeployChannelTxMock.callCount).to.eq(1);
      const call = sendDeployChannelTxMock.getCall(0);
      expect(call.args[0]).to.deep.eq(channelState);
      expect(call.args[1]).to.deep.eq({ amount: "1", assetId: AddressZero });
    });

    it("happy: alice calls sendDepositATx if multisig is deployed", async () => {
      getCodeMock.resolves(Result.ok(mkHash("0xabc")));
      const result = await ethService.sendDepositTx(channelState, channelState.alice, "1", AddressZero);
      assertResult(result, false, txReceipt);
      expect(sendDepositATxMock.callCount).to.eq(1);
      const call = sendDepositATxMock.getCall(0);
      expect(call.args[0]).to.deep.eq(channelState);
      expect(call.args[1]).to.deep.eq("1");
      expect(call.args[2]).to.deep.eq(AddressZero);
    });

    it("happy: bob calls sendDepositBTx if multisig is deployed", async () => {
      getCodeMock.resolves(Result.ok(mkHash("0xabc")));
      const result = await ethService.sendDepositTx(channelState, channelState.bob, "1", AddressZero);
      assertResult(result, false, txReceipt);
      expect(sendDepositBTxMock.callCount).to.eq(1);
      const call = sendDepositBTxMock.getCall(0);
      expect(call.args[0]).to.deep.eq(channelState);
      expect(call.args[1]).to.deep.eq("1");
      expect(call.args[2]).to.deep.eq(AddressZero);
    });

    it("happy: bob calls sendDepositBTx if multisig is not deployed", async () => {
      const result = await ethService.sendDepositTx(channelState, channelState.bob, "1", AddressZero);
      assertResult(result, false, txReceipt);
      expect(sendDepositBTxMock.callCount).to.eq(1);
      const call = sendDepositBTxMock.getCall(0);
      expect(call.args[0]).to.deep.eq(channelState);
      expect(call.args[1]).to.deep.eq("1");
      expect(call.args[2]).to.deep.eq(AddressZero);
    });
  });

  describe("sendTxWithRetries", () => {
    let sendAndConfirmTx: SinonStub;

    beforeEach(() => {
      sendAndConfirmTx = stub(ethService, "sendAndConfirmTx").resolves(Result.ok(txReceipt));
    });

    it("errors if sendTxAndParseResponse errors", async () => {
      sendAndConfirmTx.resolves(Result.fail(new ChainError(ChainError.reasons.NotEnoughFunds)));
      const result = await ethService.sendTxWithRetries(
        channelState.channelAddress,
        channelState.networkContext.chainId,
        "allowance",
        () => {
          return Promise.resolve(txResponse);
        },
      );
      assertResult(result, true, ChainError.reasons.NotEnoughFunds);
    });

    it("retries if it's a retryable error", async () => {
      sendAndConfirmTx
        .onFirstCall()
        .resolves(
          Result.fail(
            new ChainError(
              'processing response error (body="{"jsonrpc":"2.0","error":{"code":-32000,"message":"Block information is incomplete while ancient block sync is still in progress, before it\'s finished we can\'t determine the existence of requested item."},"id":14890}\n", error={"code":-32000}, requestBody="{"method":"eth_getTransactionReceipt","params":["0x8731c46fafd569bb65c6c26cd3960ad418d88310a41a03c5c4f4a0dcce15cd8a"],"id":14890,"jsonrpc":"2.0"}", requestMethod="POST", url="https://rpc.xdaichain.com/", code=SERVER_ERROR, version=web/5.1.0)',
            ),
          ),
        );

      sendAndConfirmTx.resolves(Result.ok(txReceipt));
      const result = await ethService.sendTxWithRetries(
        channelState.channelAddress,
        channelState.networkContext.chainId,
        "allowance",
        () => {
          return Promise.resolve(txResponse);
        },
      );
      assertResult(result, false, txReceipt);
    });

    it("happy: should work when sendTxAndParseResponse works on the first try", async () => {
      const result = await ethService.sendTxWithRetries(
        channelState.channelAddress,
        channelState.networkContext.chainId,
        "allowance",
        () => {
          return Promise.resolve(txResponse);
        },
      );
      assertResult(result, false, txReceipt);
    });
  });

  describe("sendAndConfirmTx", () => {
    beforeEach(() => {
      waitForConfirmation = stub(ethService, "waitForConfirmation");
    });

    it("if txFn returns undefined, returns undefined", async () => {
      const result = await ethService.sendAndConfirmTx(
        AddressZero,
        1337,
        "allowance",
        async () => {
          return undefined;
        },
        BigNumber.from(10_000),
      );
      assertResult(result, false, undefined);
    });

    it("if txFn errors, returns error", async () => {
      const result = await ethService.sendAndConfirmTx(
        AddressZero,
        1337,
        "allowance",
        async () => {
          throw new Error("Boooo");
        },
        BigNumber.from(10_000),
      );
      assertResult(result, true, "Boooo");
    });

    it("if txFn errors, with not enough funds, return special error", async () => {
      const result = await ethService.sendAndConfirmTx(
        AddressZero,
        1337,
        "allowance",
        async () => {
          throw new Error("sender doesn't have enough funds");
        },
        BigNumber.from(10_000),
      );
      assertResult(result, true, ChainError.reasons.NotEnoughFunds);
    });

    it("if receipt status == 0, saves response with error", async () => {
      const badReceipt = { ...txReceipt, status: 0 };
      waitForConfirmation.resolves(badReceipt);
      const result = await ethService.sendAndConfirmTx(AddressZero, 1337, "allowance", async () => {
        return txResponse;
      });
      expect(storeMock.saveTransactionAttempt.callCount).eq(1);
      const saveTransactionAttemptCall = storeMock.saveTransactionAttempt.getCall(0);
      const id = saveTransactionAttemptCall.args[0];
      expect(saveTransactionAttemptCall.args[1]).eq(AddressZero);
      expect(saveTransactionAttemptCall.args[2]).eq("allowance");
      expect(saveTransactionAttemptCall.args[3]).deep.eq(txResponse);

      expect(storeMock.saveTransactionFailure.callCount).eq(1);
      const saveTransactionFailureCall = storeMock.saveTransactionFailure.getCall(0);
      expect(saveTransactionFailureCall.args[0]).eq(id);
      expect(saveTransactionFailureCall.args[1]).eq(ChainError.reasons.TxReverted);
      expect(saveTransactionFailureCall.args[2]).eq(badReceipt);
      assertResult(result, true, ChainError.reasons.TxReverted);
    });

    it("if receipt wait fn errors, saves response with error", async () => {
      const ERROR_MSG = "Booooo";
      const error = new Error(ERROR_MSG);
      waitForConfirmation.rejects(error);
      const result = await ethService.sendAndConfirmTx(AddressZero, 1337, "allowance", async () => {
        return txResponse;
      });
      expect(storeMock.saveTransactionAttempt.callCount).eq(1);
      const saveTransactionAttemptCall = storeMock.saveTransactionAttempt.getCall(0);
      const id = saveTransactionAttemptCall.args[0];
      expect(saveTransactionAttemptCall.args[1]).eq(AddressZero);
      expect(saveTransactionAttemptCall.args[2]).eq("allowance");
      expect(saveTransactionAttemptCall.args[3]).deep.eq(txResponse);

      expect(storeMock.saveTransactionFailure.callCount).eq(1);
      const saveTransactionFailureCall = storeMock.saveTransactionFailure.getCall(0);
      expect(saveTransactionFailureCall.args[0]).eq(id);
      expect(saveTransactionFailureCall.args[1]).eq(ERROR_MSG);
      assertResult(result, true, ERROR_MSG);
    });

    it("retries transaction with higher gas price", async () => {
      const newTx = { ...txResponse, hash: mkHash("0xddd") }; // change hash to simulate higher gas and new hash
      const newReceipt = { ...txReceipt, transactionHash: newTx.hash };
      waitForConfirmation.onFirstCall().rejects(new ChainError(ChainError.reasons.ConfirmationTimeout));
      waitForConfirmation.onSecondCall().resolves(newReceipt);

      let receivedNonce: number = -1;
      let firstGasPrice: BigNumber = BigNumber.from(-1);
      let secondGasPrice: BigNumber = BigNumber.from(-1);
      const result = await ethService.sendAndConfirmTx(
        AddressZero,
        1337,
        "allowance",
        async (gasPrice: BigNumber, nonce?: number) => {
          if (nonce) {
            // If the nonce was passed in, we are on the second call of this callback.
            receivedNonce = nonce;
            secondGasPrice = gasPrice;
            return newTx;
          }
          firstGasPrice = gasPrice;
          return txResponse;
        },
      );

      expect(receivedNonce === txResponse.nonce, "nonce passed into callback was not the same as original tx nonce");
      expect(secondGasPrice > firstGasPrice, "second gas price should be larger than first");

      expect(storeMock.saveTransactionAttempt.callCount).eq(2);
      const saveTransactionAttemptCall = storeMock.saveTransactionAttempt.getCall(0);
      const id = saveTransactionAttemptCall.args[0];
      expect(saveTransactionAttemptCall.args[1]).eq(AddressZero);
      expect(saveTransactionAttemptCall.args[2]).eq("allowance");
      expect(saveTransactionAttemptCall.args[3]).deep.eq(txResponse);

      const saveTransactionAttemptCall2 = storeMock.saveTransactionAttempt.getCall(1);
      expect(saveTransactionAttemptCall2.args[0]).eq(id);
      expect(saveTransactionAttemptCall2.args[1]).eq(AddressZero);
      expect(saveTransactionAttemptCall2.args[2]).eq("allowance");
      expect(saveTransactionAttemptCall2.args[3]).deep.eq(newTx);

      expect(storeMock.saveTransactionReceipt.callCount).eq(1);
      const saveTransactionReceiptCall = storeMock.saveTransactionReceipt.getCall(0);
      expect(saveTransactionReceiptCall.args[0]).eq(id);
      expect(saveTransactionReceiptCall.args[1]).eq(newReceipt);

      assertResult(result, false, newReceipt);
    });

    it("stops trying to send if at max gas price", async () => {
      getGasPrice.resolves(Result.ok(BIG_GAS_PRICE.sub(1)));
      waitForConfirmation.onFirstCall().rejects(new ChainError(ChainError.reasons.ConfirmationTimeout));

      const result = await ethService.sendAndConfirmTx(AddressZero, 1337, "allowance", async () => {
        return txResponse;
      });

      expect(storeMock.saveTransactionAttempt.callCount).eq(1);
      const saveTransactionAttemptCall = storeMock.saveTransactionAttempt.getCall(0);
      const id = saveTransactionAttemptCall.args[0];
      expect(saveTransactionAttemptCall.args[1]).eq(AddressZero);
      expect(saveTransactionAttemptCall.args[2]).eq("allowance");
      expect(saveTransactionAttemptCall.args[3]).deep.eq(txResponse);

      expect(storeMock.saveTransactionFailure.callCount).eq(1);
      const saveTransactionFailureCall = storeMock.saveTransactionFailure.getCall(0);
      expect(saveTransactionFailureCall.args[0]).eq(id);
      expect(saveTransactionFailureCall.args[1]).eq(ChainError.reasons.MaxGasPriceReached);

      assertResult(result, true, ChainError.reasons.MaxGasPriceReached);
    });

    it("happy: saves responses if confirmation happens on first loop", async () => {
      waitForConfirmation.resolves(txReceipt);
      const result = await ethService.sendAndConfirmTx(AddressZero, 1337, "allowance", async () => {
        return txResponse;
      });
      expect(storeMock.saveTransactionAttempt.callCount).eq(1);
      const saveTransactionAttemptCall = storeMock.saveTransactionAttempt.getCall(0);
      const id = saveTransactionAttemptCall.args[0];
      expect(saveTransactionAttemptCall.args[1]).eq(AddressZero);
      expect(saveTransactionAttemptCall.args[2]).eq("allowance");
      expect(saveTransactionAttemptCall.args[3]).deep.eq(txResponse);

      expect(storeMock.saveTransactionReceipt.callCount).eq(1);
      const saveTransactionReceiptCall = storeMock.saveTransactionReceipt.getCall(0);
      expect(saveTransactionReceiptCall.args[0]).eq(id);
      expect(saveTransactionReceiptCall.args[1]).eq(txReceipt);

      assertResult(result, false, txReceipt);
    });
  });

  describe("waitForConfirmation", () => {
    it("should return an error if there is no provider for chain", async () => {
      await expect(ethService.waitForConfirmation(111, [txResponse])).to.eventually.be.rejectedWith(
        ChainError.reasons.ProviderNotFound,
      );
    });

    it("should wait for the required amount of confirmations", async () => {
      provider1337.getTransactionReceipt.onFirstCall().resolves({ ...txReceipt, confirmations: 0 });
      provider1337.getTransactionReceipt.onSecondCall().resolves({ ...txReceipt, confirmations: 0 });
      provider1337.getTransactionReceipt.onThirdCall().resolves(txReceipt);
      const res = await ethService.waitForConfirmation(1337, [txResponse]);
      expect(res).to.deep.eq(txReceipt);
      expect(provider1337.getTransactionReceipt.callCount).to.eq(3);
    });

    it("should error with a timeout error if it is past the confirmation time", async () => {
      provider1337.getTransactionReceipt.onThirdCall().resolves(undefined);
      await expect(ethService.waitForConfirmation(1337, [txResponse])).to.eventually.be.rejectedWith(
        ChainError.reasons.ConfirmationTimeout,
      );
    });
  });

  describe("revitalizeTxs", () => {
    it("should resubmit and monitor active txs", async () => {
      const storedTx: StoredTransaction = {
        channelAddress: mkAddress("0xa"),
        reason: "allowance",
        status: "submitted",
        to: mkAddress(),
        chainId: txResponse.chainId,
        data: txResponse.data,
        from: txResponse.from,
        id: uuidV4(),
        nonce: txResponse.nonce,
        attempts: [
          {
            transactionHash: txResponse.hash,
            gasLimit: txResponse.gasLimit.toString(),
            gasPrice: txResponse.gasPrice.toString(),
            createdAt: new Date(),
          },
        ],
        value: txResponse.value.toString(),
      };

      const storedTxs = [storedTx, storedTx, storedTx, storedTx];
      storeMock.getActiveTransactions.resolves(storedTxs);

      const getTxResponseFromHash = stub(ethService, "getTxResponseFromHash");
      getTxResponseFromHash.onFirstCall().resolves(Result.fail(new ChainError(ChainError.reasons.TxNotFound))); // first one errors, should be skipped
      getTxResponseFromHash.onSecondCall().resolves(Result.ok({ response: txResponse, receipt: txReceipt })); // second one has a receipt, needs to be saved
      getTxResponseFromHash.onThirdCall().resolves(Result.ok({ response: txResponse })); // 3rd and 4th need to be resubmitted
      getTxResponseFromHash.resolves(Result.ok({ response: txResponse }));

      const sendTxWithRetries = stub(ethService, "sendTxWithRetries").resolves(Result.ok(txReceipt));

      await ethService.revitalizeTxs();
      expect(storeMock.saveTransactionReceipt.callCount).to.eq(1);
      expect(sendTxWithRetries.callCount).to.eq(2);
    });
  });
});