caver-js/test/packages/caver.transaction/feeDelegatedCancel.js

caver-js is a JavaScript API library that allows developers to interact with a Kaia node

/*
    Copyright 2020 The caver-js Authors
    This file is part of the caver-js library.

    The caver-js library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    The caver-js library 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with the caver-js. If not, see <http://www.gnu.org/licenses/>.
*/

const chai = require('chai')
const sinon = require('sinon')
const sinonChai = require('sinon-chai')
const chaiAsPromised = require('chai-as-promised')

const RLP = require('eth-lib/lib/rlp')

chai.use(chaiAsPromised)
chai.use(sinonChai)

const expect = chai.expect

const { propertiesForUnnecessary } = require('../utils')

const testRPCURL = require('../../testrpc')
const Caver = require('../../../index')
const Keyring = require('../../../packages/caver-wallet/src/keyring/keyringFactory')
const SingleKeyring = require('../../../packages/caver-wallet/src/keyring/singleKeyring')
const TransactionHasher = require('../../../packages/caver-transaction/src/transactionHasher/transactionHasher')

const { generateRoleBasedKeyring, checkSignature, checkFeePayerSignature } = require('../utils')

let caver
let sender
let roleBasedKeyring

const txWithExpectedValues = {}

const sandbox = sinon.createSandbox()

before(() => {
    caver = new Caver(testRPCURL)

    sender = caver.wallet.add(caver.wallet.keyring.generate())
    roleBasedKeyring = generateRoleBasedKeyring([3, 3, 3])

    txWithExpectedValues.tx = {
        from: '0xa94f5374Fce5edBC8E2a8697C15331677e6EbF0B',
        gas: '0xf4240',
        gasPrice: '0x19',
        chainId: '0x1',
        nonce: 1234,
        signatures: [
            [
                '0x26',
                '0x8409f5441d4725f90905ad87f03793857d124de7a43169bc67320cd2f020efa9',
                '0x60af63e87bdc565d7f7de906916b2334336ee7b24d9a71c9521a67df02e7ec92',
            ],
        ],
        feePayer: '0x5A0043070275d9f6054307Ee7348bD660849D90f',
        feePayerSignatures: [
            [
                '0x26',
                '0x44d5b25e8c649a1fdaa409dc3817be390ad90a17c25bc17c89b6d5d248495e0',
                '0x73938e690d27b5267c73108352cf12d01de7fd0077b388e94721aa1fa32f85ec',
            ],
        ],
    }
    txWithExpectedValues.rlpEncodingForSigning = '0xe39fde398204d219830f424094a94f5374fce5edbc8e2a8697c15331677e6ebf0b018080'
    txWithExpectedValues.rlpEncodingForFeePayerSigning =
        '0xf8389fde398204d219830f424094a94f5374fce5edbc8e2a8697c15331677e6ebf0b945a0043070275d9f6054307ee7348bd660849d90f018080'
    txWithExpectedValues.senderTxHash = '0xcc6c2673398903b3d906a3023b41636fc08bd1bddd5aa1602116091638f48447'
    txWithExpectedValues.transactionHash = '0x96b39d3ab849127d31a5f7b5c882ca9ba408cd9d875052640d51a64f8c4acbb2'
    txWithExpectedValues.rlpEncoding =
        '0x39f8c08204d219830f424094a94f5374fce5edbc8e2a8697c15331677e6ebf0bf845f84326a08409f5441d4725f90905ad87f03793857d124de7a43169bc67320cd2f020efa9a060af63e87bdc565d7f7de906916b2334336ee7b24d9a71c9521a67df02e7ec92945a0043070275d9f6054307ee7348bd660849d90ff845f84326a0044d5b25e8c649a1fdaa409dc3817be390ad90a17c25bc17c89b6d5d248495e0a073938e690d27b5267c73108352cf12d01de7fd0077b388e94721aa1fa32f85ec'
})

describe('TxTypeFeeDelegatedCancel', () => {
    let transactionObj
    let getGasPriceSpy
    let getHeaderSpy
    let getNonceSpy
    let getChainIdSpy
    beforeEach(() => {
        transactionObj = {
            from: sender.address,
            gas: '0x15f90',
            nonce: '0x6',
        }

        getGasPriceSpy = sandbox.stub(caver.transaction.klaytnCall, 'getGasPrice')
        getGasPriceSpy.returns('0x5d21dba00')
        getHeaderSpy = sandbox.stub(caver.transaction.klaytnCall, 'getHeaderByNumber')
        getHeaderSpy.returns({ baseFeePerGas: '0x5d21dba00' })
        getNonceSpy = sandbox.stub(caver.transaction.klaytnCall, 'getTransactionCount')
        getNonceSpy.returns('0x3a')
        getChainIdSpy = sandbox.stub(caver.transaction.klaytnCall, 'getChainId')
        getChainIdSpy.returns('0x7e3')
    })

    afterEach(() => {
        sandbox.restore()
    })

    context('create feeDelegatedCancel instance', () => {
        it('CAVERJS-UNIT-TRANSACTIONFD-371: If feeDelegatedCancel not define from, return error', () => {
            delete transactionObj.from

            const expectedError = '"from" is missing'
            expect(() => caver.transaction.feeDelegatedCancel.create(transactionObj)).to.throw(expectedError)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-372: If feeDelegatedCancel not define gas, return error', () => {
            delete transactionObj.gas

            const expectedError = '"gas" is missing'
            expect(() => caver.transaction.feeDelegatedCancel.create(transactionObj)).to.throw(expectedError)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-373: If feeDelegatedCancel define from property with invalid address, return error', () => {
            transactionObj.from = 'invalid'

            const expectedError = `Invalid address of from: ${transactionObj.from}`
            expect(() => caver.transaction.feeDelegatedCancel.create(transactionObj)).to.throw(expectedError)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-374: If feeDelegatedCancel define feePayer property with invalid address, return error', () => {
            transactionObj.feePayer = 'invalid'

            const expectedError = `Invalid address of fee payer: ${transactionObj.feePayer}`
            expect(() => caver.transaction.feeDelegatedCancel.create(transactionObj)).to.throw(expectedError)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-375: If feeDelegatedCancel define feePayerSignatures property without feePayer, return error', () => {
            transactionObj.feePayerSignatures = [
                [
                    '0x26',
                    '0xf45cf8d7f88c08e6b6ec0b3b562f34ca94283e4689021987abb6b0772ddfd80a',
                    '0x298fe2c5aeabb6a518f4cbb5ff39631a5d88be505d3923374f65fdcf63c2955b',
                ],
            ]

            const expectedError = '"feePayer" is missing: feePayer must be defined with feePayerSignatures.'
            expect(() => caver.transaction.feeDelegatedCancel.create(transactionObj)).to.throw(expectedError)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-376: If feeDelegatedCancel define unnecessary property, return error', () => {
            const unnecessaries = [
                propertiesForUnnecessary.to,
                propertiesForUnnecessary.value,
                propertiesForUnnecessary.input,
                propertiesForUnnecessary.codeFormat,
                propertiesForUnnecessary.humanReadable,
                propertiesForUnnecessary.failKey,
                propertiesForUnnecessary.feeRatio,
                propertiesForUnnecessary.account,
                propertiesForUnnecessary.key,
                propertiesForUnnecessary.legacyKey,
                propertiesForUnnecessary.publicKey,
                propertiesForUnnecessary.failKey,
                propertiesForUnnecessary.multisig,
                propertiesForUnnecessary.roleTransactionKey,
                propertiesForUnnecessary.roleAccountUpdateKey,
                propertiesForUnnecessary.roleFeePayerKey,
                propertiesForUnnecessary.accessList,
                propertiesForUnnecessary.maxPriorityFeePerGas,
                propertiesForUnnecessary.maxFeePerGas,
            ]

            for (let i = 0; i < unnecessaries.length; i++) {
                if (i > 0) delete transactionObj[unnecessaries[i - 1].name]
                transactionObj[unnecessaries[i].name] = unnecessaries[i].value

                const expectedError = `"${unnecessaries[i].name}" cannot be used with ${caver.transaction.type.TxTypeFeeDelegatedCancel} transaction`
                expect(() => caver.transaction.feeDelegatedCancel.create(transactionObj)).to.throw(expectedError)
            }
        })
    })

    context('feeDelegatedCancel.getRLPEncoding', () => {
        it('CAVERJS-UNIT-TRANSACTIONFD-377: Returns RLP-encoded string', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(txWithExpectedValues.tx)

            expect(tx.getRLPEncoding()).to.equal(txWithExpectedValues.rlpEncoding)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-378: getRLPEncoding should throw error when nonce is undefined', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(txWithExpectedValues.tx)
            delete tx._nonce

            const expectedError = `nonce is undefined. Define nonce in transaction or use 'transaction.fillTransaction' to fill values.`

            expect(() => tx.getRLPEncoding()).to.throw(expectedError)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-379: getRLPEncoding should throw error when gasPrice is undefined', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(txWithExpectedValues.tx)
            delete tx._gasPrice

            const expectedError = `gasPrice is undefined. Define gasPrice in transaction or use 'transaction.fillTransaction' to fill values.`

            expect(() => tx.getRLPEncoding()).to.throw(expectedError)
        })
    })

    context('feeDelegatedCancel.sign', () => {
        const txHash = '0xe9a11d9ef95fb437f75d07ce768d43e74f158dd54b106e7d3746ce29d545b550'

        let fillTransactionSpy
        let createFromPrivateKeySpy
        let senderSignSpy
        let appendSignaturesSpy
        let hasherSpy
        let tx

        beforeEach(() => {
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            fillTransactionSpy = sandbox.spy(tx, 'fillTransaction')
            createFromPrivateKeySpy = sandbox.spy(Keyring, 'createFromPrivateKey')
            senderSignSpy = sandbox.spy(sender, 'sign')
            appendSignaturesSpy = sandbox.spy(tx, 'appendSignatures')
            hasherSpy = sandbox.stub(TransactionHasher, 'getHashForSignature')
            hasherSpy.returns(txHash)
        })

        afterEach(() => {
            sandbox.restore()
        })

        function checkFunctionCall(customHasher = false) {
            expect(fillTransactionSpy).to.have.been.calledOnce
            expect(appendSignaturesSpy).to.have.been.calledOnce
            if (!customHasher) expect(hasherSpy).to.have.been.calledWith(tx)
        }

        it('CAVERJS-UNIT-TRANSACTIONFD-381: input: keyring. should sign transaction.', async () => {
            await tx.sign(sender)

            checkFunctionCall()
            checkSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignSpy).to.have.been.calledWith(txHash, '0x7e3', 0, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-382: input: private key string. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.sign(sender.key.privateKey)

            checkFunctionCall()
            checkSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 0, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-383: input: KlaytnWalletKey. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.sign(sender.getKlaytnWalletKey())

            checkFunctionCall()
            checkSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 0, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-384: input: keyring, index. should sign transaction with specific index.', async () => {
            const roleBasedSignSpy = sandbox.spy(roleBasedKeyring, 'sign')

            tx.from = roleBasedKeyring.address

            await tx.sign(roleBasedKeyring, 1)

            checkFunctionCall()
            checkSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(roleBasedSignSpy).to.have.been.calledWith(txHash, '0x7e3', 0, 1)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-385: input: keyring, custom hasher. should use custom hasher.', async () => {
            const hashForCustomHasher = '0x9e4b4835f6ea5ce55bd1037fe92040dd070af6154aefc30d32c65364a1123cae'
            const customHasher = () => hashForCustomHasher

            await tx.sign(sender, customHasher)

            checkFunctionCall(true)
            checkSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignSpy).to.have.been.calledWith(hashForCustomHasher, '0x7e3', 0, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-386: input: keyring, index, custom hasher. should use custom hasher when sign transaction.', async () => {
            const hashForCustomHasher = '0x9e4b4835f6ea5ce55bd1037fe92040dd070af6154aefc30d32c65364a1123cae'
            const customHasher = () => hashForCustomHasher

            const roleBasedSignSpy = sandbox.spy(roleBasedKeyring, 'sign')

            tx.from = roleBasedKeyring.address

            await tx.sign(roleBasedKeyring, 1, customHasher)

            checkFunctionCall(true)
            checkSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(roleBasedSignSpy).to.have.been.calledWith(hashForCustomHasher, '0x7e3', 0, 1)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-387: input: keyring. should throw error when from is different.', async () => {
            transactionObj.from = roleBasedKeyring.address
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const expectedError = `The from address of the transaction is different with the address of the keyring to use.`
            await expect(tx.sign(sender)).to.be.rejectedWith(expectedError)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-388: input: rolebased keyring, index out of range. should throw error.', async () => {
            transactionObj.from = roleBasedKeyring.address
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const expectedError = `Invalid index(10): index must be less than the length of keys(${roleBasedKeyring.keys[0].length}).`
            await expect(tx.sign(roleBasedKeyring, 10)).to.be.rejectedWith(expectedError)
        }).timeout(200000)
    })

    context('feeDelegatedCancel.signAsFeePayer', () => {
        const txHash = '0xe9a11d9ef95fb437f75d07ce768d43e74f158dd54b106e7d3746ce29d545b550'

        let fillTransactionSpy
        let createFromPrivateKeySpy
        let senderSignSpy
        let appendSignaturesSpy
        let hasherSpy
        let tx

        beforeEach(() => {
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)
            tx.feePayer = sender.address

            fillTransactionSpy = sandbox.spy(tx, 'fillTransaction')
            createFromPrivateKeySpy = sandbox.spy(Keyring, 'createFromPrivateKey')
            senderSignSpy = sandbox.spy(sender, 'sign')
            appendSignaturesSpy = sandbox.spy(tx, 'appendFeePayerSignatures')
            hasherSpy = sandbox.stub(TransactionHasher, 'getHashForFeePayerSignature')
            hasherSpy.returns(txHash)
        })

        afterEach(() => {
            sandbox.restore()
        })

        function checkFunctionCall(customHasher = false) {
            expect(fillTransactionSpy).to.have.been.calledOnce
            expect(appendSignaturesSpy).to.have.been.calledOnce
            if (!customHasher) expect(hasherSpy).to.have.been.calledWith(tx)
        }

        it('CAVERJS-UNIT-TRANSACTIONFD-389: input: keyring. If feePayer is not defined, should be set with keyring address.', async () => {
            tx.feePayer = '0x'
            await tx.signAsFeePayer(sender)

            expect(tx.feePayer.toLowerCase()).to.equal(sender.address.toLowerCase())
            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignSpy).to.have.been.calledWith(txHash, '0x7e3', 2, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-390: input: keyring. should sign transaction.', async () => {
            await tx.signAsFeePayer(sender)

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignSpy).to.have.been.calledWith(txHash, '0x7e3', 2, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-391: input: private key string. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.signAsFeePayer(sender.key.privateKey)

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 2, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-392: input: KlaytnWalletKey. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.signAsFeePayer(sender.getKlaytnWalletKey())

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 2, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-393: input: keyring, index. should sign transaction with specific index.', async () => {
            const roleBasedSignSpy = sandbox.spy(roleBasedKeyring, 'sign')

            tx.feePayer = roleBasedKeyring.address

            await tx.signAsFeePayer(roleBasedKeyring, 1)

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(roleBasedSignSpy).to.have.been.calledWith(txHash, '0x7e3', 2, 1)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-394: input: keyring, custom hasher. should use custom hasher.', async () => {
            const hashForCustomHasher = '0x9e4b4835f6ea5ce55bd1037fe92040dd070af6154aefc30d32c65364a1123cae'
            const customHasher = () => hashForCustomHasher

            const roleBasedSignSpy = sandbox.spy(roleBasedKeyring, 'sign')

            tx.feePayer = roleBasedKeyring.address
            await tx.signAsFeePayer(roleBasedKeyring, customHasher)

            checkFunctionCall(true)
            checkFeePayerSignature(tx, { expectedLength: roleBasedKeyring.keys[2].length })
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(roleBasedSignSpy).to.have.been.calledWith(hashForCustomHasher, '0x7e3', 2, undefined)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-395: input: keyring, index, custom hasher. should use custom hasher when sign transaction.', async () => {
            const hashForCustomHasher = '0x9e4b4835f6ea5ce55bd1037fe92040dd070af6154aefc30d32c65364a1123cae'
            const customHasher = () => hashForCustomHasher

            const roleBasedSignSpy = sandbox.spy(roleBasedKeyring, 'sign')

            tx.feePayer = roleBasedKeyring.address

            await tx.signAsFeePayer(roleBasedKeyring, 1, customHasher)

            checkFunctionCall(true)
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(roleBasedSignSpy).to.have.been.calledWith(hashForCustomHasher, '0x7e3', 2, 1)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-396: input: keyring. should throw error when feePayer is different.', async () => {
            tx.feePayer = roleBasedKeyring.address

            const expectedError = `The feePayer address of the transaction is different with the address of the keyring to use.`
            await expect(tx.signAsFeePayer(sender)).to.be.rejectedWith(expectedError)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-397: input: rolebased keyring, index out of range. should throw error.', async () => {
            transactionObj.from = roleBasedKeyring.address
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const expectedError = `Invalid index(10): index must be less than the length of keys(${roleBasedKeyring.keys[0].length}).`
            await expect(tx.signAsFeePayer(roleBasedKeyring, 10)).to.be.rejectedWith(expectedError)
        }).timeout(200000)
    })

    context('feeDelegatedCancel.sign with multiple keys', () => {
        const txHash = '0xe9a11d9ef95fb437f75d07ce768d43e74f158dd54b106e7d3746ce29d545b550'

        let fillTransactionSpy
        let createFromPrivateKeySpy
        let senderSignWithKeysSpy
        let appendSignaturesSpy
        let hasherSpy
        let tx

        beforeEach(() => {
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            fillTransactionSpy = sandbox.spy(tx, 'fillTransaction')
            createFromPrivateKeySpy = sandbox.spy(Keyring, 'createFromPrivateKey')
            senderSignWithKeysSpy = sandbox.spy(sender, 'sign')
            appendSignaturesSpy = sandbox.spy(tx, 'appendSignatures')
            hasherSpy = sandbox.stub(TransactionHasher, 'getHashForSignature')
            hasherSpy.returns(txHash)
        })

        afterEach(() => {
            sandbox.restore()
        })

        function checkFunctionCall(customHasher = false) {
            expect(fillTransactionSpy).to.have.been.calledOnce
            expect(appendSignaturesSpy).to.have.been.calledOnce
            if (!customHasher) expect(hasherSpy).to.have.been.calledWith(tx)
        }

        it('CAVERJS-UNIT-TRANSACTIONFD-398: input: keyring. should sign transaction.', async () => {
            await tx.sign(sender)

            checkFunctionCall()
            checkSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignWithKeysSpy).to.have.been.calledWith(txHash, '0x7e3', 0)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-399: input: private key string. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.sign(sender.key.privateKey)

            checkFunctionCall()
            checkSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 0)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-400: input: KlaytnWalletKey. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.sign(sender.getKlaytnWalletKey())

            checkFunctionCall()
            checkSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 0)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-401: input: keyring, custom hasher. should use custom hasher when sign transaction.', async () => {
            const hashForCustomHasher = '0x9e4b4835f6ea5ce55bd1037fe92040dd070af6154aefc30d32c65364a1123cae'
            const customHasher = () => hashForCustomHasher

            await tx.sign(sender, customHasher)

            checkFunctionCall(true)
            checkSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignWithKeysSpy).to.have.been.calledWith(hashForCustomHasher, '0x7e3', 0)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-402: input: keyring. should throw error when from is different.', async () => {
            transactionObj.from = roleBasedKeyring.address
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const expectedError = `The from address of the transaction is different with the address of the keyring to use.`
            await expect(tx.sign(sender)).to.be.rejectedWith(expectedError)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-403: input: roleBased keyring. should sign with multiple keys and append signatures', async () => {
            const roleBasedSignWithKeysSpy = sandbox.spy(roleBasedKeyring, 'sign')

            tx.from = roleBasedKeyring.address

            await tx.sign(roleBasedKeyring)

            checkFunctionCall(true)
            checkSignature(tx, { expectedLength: roleBasedKeyring.keys[0].length })
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(roleBasedSignWithKeysSpy).to.have.been.calledWith(txHash, '0x7e3', 0)
        }).timeout(200000)
    })

    context('feeDelegatedCancel.signAsFeePayer with multiple keys', () => {
        const txHash = '0xe9a11d9ef95fb437f75d07ce768d43e74f158dd54b106e7d3746ce29d545b550'

        let fillTransactionSpy
        let createFromPrivateKeySpy
        let senderSignWithKeysSpy
        let appendSignaturesSpy
        let hasherSpy
        let tx

        beforeEach(() => {
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            fillTransactionSpy = sandbox.spy(tx, 'fillTransaction')
            createFromPrivateKeySpy = sandbox.spy(Keyring, 'createFromPrivateKey')
            senderSignWithKeysSpy = sandbox.spy(sender, 'sign')
            appendSignaturesSpy = sandbox.spy(tx, 'appendFeePayerSignatures')
            hasherSpy = sandbox.stub(TransactionHasher, 'getHashForFeePayerSignature')
            hasherSpy.returns(txHash)
        })

        afterEach(() => {
            sandbox.restore()
        })

        function checkFunctionCall(customHasher = false) {
            expect(fillTransactionSpy).to.have.been.calledOnce
            expect(appendSignaturesSpy).to.have.been.calledOnce
            if (!customHasher) expect(hasherSpy).to.have.been.calledWith(tx)
        }

        it('CAVERJS-UNIT-TRANSACTIONFD-404: input: keyring. If feePayer is not defined, should be set with keyring address.', async () => {
            tx.feePayer = '0x'
            await tx.signAsFeePayer(sender)

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignWithKeysSpy).to.have.been.calledWith(txHash, '0x7e3', 2)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-405: input: keyring. should sign transaction.', async () => {
            await tx.signAsFeePayer(sender)

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignWithKeysSpy).to.have.been.calledWith(txHash, '0x7e3', 2)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-406: input: private key string. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.signAsFeePayer(sender.key.privateKey)

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 2)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-407: input: KlaytnWalletKey. should sign transaction.', async () => {
            const signProtoSpy = sandbox.spy(SingleKeyring.prototype, 'sign')
            await tx.signAsFeePayer(sender.getKlaytnWalletKey())

            checkFunctionCall()
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).to.have.been.calledOnce
            expect(signProtoSpy).to.have.been.calledWith(txHash, '0x7e3', 2)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-408: input: keyring, custom hasher. should use custom hasher when sign transaction.', async () => {
            const hashForCustomHasher = '0x9e4b4835f6ea5ce55bd1037fe92040dd070af6154aefc30d32c65364a1123cae'
            const customHasher = () => hashForCustomHasher

            await tx.signAsFeePayer(sender, customHasher)

            checkFunctionCall(true)
            checkFeePayerSignature(tx)
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(senderSignWithKeysSpy).to.have.been.calledWith(hashForCustomHasher, '0x7e3', 2)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-409: input: keyring. should throw error when feePayer is different.', async () => {
            tx.feePayer = roleBasedKeyring.address

            const expectedError = `The feePayer address of the transaction is different with the address of the keyring to use.`
            await expect(tx.signAsFeePayer(sender)).to.be.rejectedWith(expectedError)
        }).timeout(200000)

        it('CAVERJS-UNIT-TRANSACTIONFD-410: input: roleBased keyring. should sign with multiple keys and append signatures', async () => {
            const roleBasedSignWithKeysSpy = sandbox.spy(roleBasedKeyring, 'sign')

            tx.feePayer = roleBasedKeyring.address

            await tx.signAsFeePayer(roleBasedKeyring)

            checkFunctionCall(true)
            checkFeePayerSignature(tx, { expectedLength: roleBasedKeyring.keys[2].length })
            expect(createFromPrivateKeySpy).not.to.have.been.calledOnce
            expect(roleBasedSignWithKeysSpy).to.have.been.calledWith(txHash, '0x7e3', 2)
        }).timeout(200000)
    })

    context('feeDelegatedCancel.appendSignatures', () => {
        afterEach(() => {
            sandbox.restore()
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-411: If signatures is empty, appendSignatures append signatures in transaction', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                '0x0fea',
                '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
            ]
            tx.appendSignatures(sig)
            checkSignature(tx)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-412: If signatures is empty, appendSignatures append signatures with two-dimensional signature array', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                [
                    '0x0fea',
                    '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                    '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
                ],
            ]
            tx.appendSignatures(sig)
            checkSignature(tx)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-413: If signatures is not empty, appendSignatures should append signatures', () => {
            transactionObj.signatures = [
                '0x0fea',
                '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
            ]
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                '0x0fea',
                '0x7a5011b41cfcb6270af1b5f8aeac8aeabb1edb436f028261b5add564de694700',
                '0x23ac51660b8b421bf732ef8148d0d4f19d5e29cb97be6bccb5ae505ebe89eb4a',
            ]

            tx.appendSignatures(sig)
            checkSignature(tx, { expectedLength: 2 })
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-414: appendSignatures should append multiple signatures', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                [
                    '0x0fea',
                    '0xbde66cceed35a576010966338b7ded961f2c160c96f928e193b47aaf4480aa07',
                    '0x546eb193ec138523b7fd34c4f12a1a04d0f74470e8f3bbe91ce0b4ec16e7f0d2',
                ],
                [
                    '0x0fea',
                    '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                    '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
                ],
            ]

            tx.appendSignatures(sig)
            checkSignature(tx, { expectedLength: 2 })
        })
    })

    context('feeDelegatedCancel.appendFeePayerSignatures', () => {
        beforeEach(() => {
            transactionObj.feePayer = '0x90b3e9a3770481345a7f17f22f16d020bccfd33e'
        })
        afterEach(() => {
            sandbox.restore()
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-415: If feePayerSignatures is empty, appendFeePayerSignatures append feePayerSignatures in transaction', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                '0x0fea',
                '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
            ]
            tx.appendFeePayerSignatures(sig)
            checkFeePayerSignature(tx)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-416: If feePayerSignatures is empty, appendFeePayerSignatures append feePayerSignatures with two-dimensional signature array', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                [
                    '0x0fea',
                    '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                    '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
                ],
            ]
            tx.appendFeePayerSignatures(sig)
            checkFeePayerSignature(tx)
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-417: If feePayerSignatures is not empty, appendFeePayerSignatures should append feePayerSignatures', () => {
            transactionObj.feePayerSignatures = [
                '0x0fea',
                '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
            ]
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                '0x0fea',
                '0x7a5011b41cfcb6270af1b5f8aeac8aeabb1edb436f028261b5add564de694700',
                '0x23ac51660b8b421bf732ef8148d0d4f19d5e29cb97be6bccb5ae505ebe89eb4a',
            ]

            tx.appendFeePayerSignatures(sig)
            checkFeePayerSignature(tx, { expectedLength: 2 })
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-418: appendFeePayerSignatures should append multiple feePayerSignatures', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const sig = [
                [
                    '0x0fea',
                    '0xbde66cceed35a576010966338b7ded961f2c160c96f928e193b47aaf4480aa07',
                    '0x546eb193ec138523b7fd34c4f12a1a04d0f74470e8f3bbe91ce0b4ec16e7f0d2',
                ],
                [
                    '0x0fea',
                    '0xade9480f584fe481bf070ab758ecc010afa15debc33e1bd75af637d834073a6e',
                    '0x38160105d78cef4529d765941ad6637d8dcf6bd99310e165fee1c39fff2aa27e',
                ],
            ]

            tx.appendFeePayerSignatures(sig)
            checkFeePayerSignature(tx, { expectedLength: 2 })
        })
    })

    context('feeDelegatedCancel.combineSignedRawTransactions', () => {
        beforeEach(() => {
            transactionObj = {
                from: '0xdcad313f2bf2240dbdb243eaf5eee2f512e0bfd1',
                gas: '0xdbba0',
                nonce: '0x1',
                gasPrice: '0x5d21dba00',
                chainId: '0x7e3',
            }
        })
        afterEach(() => {
            sandbox.restore()
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-419: combineSignedRawTransactions combines single signature and sets signatures in transaction', () => {
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)
            const appendSignaturesSpy = sandbox.spy(tx, 'appendSignatures')
            const getRLPEncodingSpy = sandbox.spy(tx, 'getRLPEncoding')

            const rlpEncoded =
                '0x39f883018505d21dba00830dbba094dcad313f2bf2240dbdb243eaf5eee2f512e0bfd1f847f845820fe9a04d9bf7a8bd15a41143eeecd3c39691cdc151b50d641534f0c73055849f7abca1a07123185b4cc046eb6a78e1ee370c059dfe437012098ebe18379685acd907606f940000000000000000000000000000000000000000c4c3018080'
            const combined = tx.combineSignedRawTransactions([rlpEncoded])

            const expectedSignatures = [
                [
                    '0x0fe9',
                    '0x4d9bf7a8bd15a41143eeecd3c39691cdc151b50d641534f0c73055849f7abca1',
                    '0x7123185b4cc046eb6a78e1ee370c059dfe437012098ebe18379685acd907606f',
                ],
            ]

            expect(appendSignaturesSpy).to.have.been.calledOnce
            expect(getRLPEncodingSpy).to.have.been.calledOnce
            expect(combined).to.equal(rlpEncoded)
            checkSignature(tx, { expectedSignatures })
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-420: combineSignedRawTransactions combines multiple signatures and sets signatures in transaction', () => {
            transactionObj.signatures = [
                [
                    '0x0fe9',
                    '0x4d9bf7a8bd15a41143eeecd3c39691cdc151b50d641534f0c73055849f7abca1',
                    '0x7123185b4cc046eb6a78e1ee370c059dfe437012098ebe18379685acd907606f',
                ],
            ]
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const rlpEncodedStrings = [
                '0x39f86f018505d21dba00830dbba094dcad313f2bf2240dbdb243eaf5eee2f512e0bfd1f847f845820fe9a0205d4f6f758629da5eb25d1d572e82430243e00096ed64097b6d0031847bf792a0280ce8a79438c699fce0417403e8892e46e10da764b16876091ef0965c1ce1df80c4c3018080',
                '0x39f86f018505d21dba00830dbba094dcad313f2bf2240dbdb243eaf5eee2f512e0bfd1f847f845820feaa02f3c7b7aebd6c9af7a5b4259f0ea77d96362efbdca397b9f17e3c6924296c53fa00e4197ba6e38cecf99715f523c1805a58559072f944443bad1152dee73bfb16780c4c3018080',
            ]

            const appendSignaturesSpy = sandbox.spy(tx, 'appendSignatures')
            const getRLPEncodingSpy = sandbox.spy(tx, 'getRLPEncoding')

            const combined = tx.combineSignedRawTransactions(rlpEncodedStrings)

            const expectedRLPEncoded =
                '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'

            const expectedSignatures = [
                [
                    '0x0fe9',
                    '0x4d9bf7a8bd15a41143eeecd3c39691cdc151b50d641534f0c73055849f7abca1',
                    '0x7123185b4cc046eb6a78e1ee370c059dfe437012098ebe18379685acd907606f',
                ],
                [
                    '0x0fe9',
                    '0x205d4f6f758629da5eb25d1d572e82430243e00096ed64097b6d0031847bf792',
                    '0x280ce8a79438c699fce0417403e8892e46e10da764b16876091ef0965c1ce1df',
                ],
                [
                    '0x0fea',
                    '0x2f3c7b7aebd6c9af7a5b4259f0ea77d96362efbdca397b9f17e3c6924296c53f',
                    '0x0e4197ba6e38cecf99715f523c1805a58559072f944443bad1152dee73bfb167',
                ],
            ]

            expect(appendSignaturesSpy).to.have.been.callCount(rlpEncodedStrings.length)
            expect(getRLPEncodingSpy).to.have.been.calledOnce
            expect(combined).to.equal(expectedRLPEncoded)
            checkSignature(tx, { expectedSignatures })
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-421: combineSignedRawTransactions combines single feePayerSignature and sets feePayerSignatures in transaction', () => {
            transactionObj.feePayer = '0x6f89ec285c52a3e092cdb017e125a9b197e78dc7'
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)
            const appendSignaturesSpy = sandbox.spy(tx, 'appendFeePayerSignatures')
            const getRLPEncodingSpy = sandbox.spy(tx, 'getRLPEncoding')

            const rlpEncoded =
                '0x39f883018505d21dba00830dbba094dcad313f2bf2240dbdb243eaf5eee2f512e0bfd1c4c3018080946f89ec285c52a3e092cdb017e125a9b197e78dc7f847f845820fe9a0a4ca740e08115db092a79ce902bdac45347a3d34a74ea0fcc371ccf01269ca43a029e095bf3f9e0be7e2130fe6985419114958877412b46b5b4243cc39380c5028'
            const combined = tx.combineSignedRawTransactions([rlpEncoded])

            const expectedSignatures = [
                [
                    '0x0fe9',
                    '0xa4ca740e08115db092a79ce902bdac45347a3d34a74ea0fcc371ccf01269ca43',
                    '0x29e095bf3f9e0be7e2130fe6985419114958877412b46b5b4243cc39380c5028',
                ],
            ]

            expect(appendSignaturesSpy).to.have.been.calledOnce
            expect(getRLPEncodingSpy).to.have.been.calledOnce
            expect(combined).to.equal(rlpEncoded)
            checkFeePayerSignature(tx, { expectedSignatures })
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-422: combineSignedRawTransactions combines multiple feePayerSignatures and sets feePayerSignatures in transaction', () => {
            transactionObj.feePayer = '0x6f89ec285c52a3e092cdb017e125a9b197e78dc7'
            transactionObj.feePayerSignatures = [
                [
                    '0x0fe9',
                    '0xa4ca740e08115db092a79ce902bdac45347a3d34a74ea0fcc371ccf01269ca43',
                    '0x29e095bf3f9e0be7e2130fe6985419114958877412b46b5b4243cc39380c5028',
                ],
            ]
            const tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            const rlpEncodedStrings = [
                '0x39f883018505d21dba00830dbba094dcad313f2bf2240dbdb243eaf5eee2f512e0bfd1c4c3018080946f89ec285c52a3e092cdb017e125a9b197e78dc7f847f845820feaa09c86edd1b5d75ac1050a5a7494dece5f186b8e9654f75cf4942f7dca57fc2de0a032f306028776389107c40f1765679b2630f093b1c4f4fda9415f0c909c7addef',
                '0x39f883018505d21dba00830dbba094dcad313f2bf2240dbdb243eaf5eee2f512e0bfd1c4c3018080946f89ec285c52a3e092cdb017e125a9b197e78dc7f847f845820fe9a0392e7a5d2efbc7da9d114ce79797eebbe2007ece065109f7f93baed1e23bb22ca022e161a9f20c14b5830154e819cdaf59e8d82690b318afb19e2903b52020bb3e',
            ]

            const appendSignaturesSpy = sandbox.spy(tx, 'appendFeePayerSignatures')
            const getRLPEncodingSpy = sandbox.spy(tx, 'getRLPEncoding')

            const combined = tx.combineSignedRawTransactions(rlpEncodedStrings)

            const expectedRLPEncoded =
                '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'

            const expectedFeePayerSignatures = [
                [
                    '0x0fe9',
                    '0xa4ca740e08115db092a79ce902bdac45347a3d34a74ea0fcc371ccf01269ca43',
                    '0x29e095bf3f9e0be7e2130fe6985419114958877412b46b5b4243cc39380c5028',
                ],
                [
                    '0x0fea',
                    '0x9c86edd1b5d75ac1050a5a7494dece5f186b8e9654f75cf4942f7dca57fc2de0',
                    '0x32f306028776389107c40f1765679b2630f093b1c4f4fda9415f0c909c7addef',
                ],
                [
                    '0x0fe9',
                    '0x392e7a5d2efbc7da9d114ce79797eebbe2007ece065109f7f93baed1e23bb22c',
                    '0x22e161a9f20c14b5830154e819cdaf59e8d82690b318afb19e2903b52020bb3e',
                ],
            ]

            expect(appendSignaturesSpy).to.have.been.callCount(rlpEncodedStrings.length)
            expect(getRLPEncodingSpy).to.have.been.calledOnce
            expect(combined).to.equal(expectedRLPEncoded)
            checkFeePayerSignature(tx, { expectedFeePayerSignatures })
        })

        it('CAVERJS-UNIT-TRANSACTIONFD-423: combineSignedRawTransactions combines multiple signatures and feePayerSignatures', () => {
            let tx = caver.transaction.feeDelegatedCancel.create(transactionObj)

            // RLP encoding with only signatures
            const rlpEncodedStrings = [
                '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',
            ]
            const expectedSignatures = [
                [
                    '0x0fe9',
                    '0x4d9bf7a8bd15a41143eeecd3c39691cdc151b50d641534f0c73055849f7abca1',
                    '0x7123185b4cc046eb6a78e1ee370c059dfe437012098ebe18379685acd907606f',
                ],
                [
                    '0x0fe9',
                    '0x205d4f6f758629da5eb25d1d572e82430243e00096ed64097b6d0031847bf792',
                    '0x280ce8a79438c699fce0417403e8892e46e10da764b16876091ef0965c1ce1df',
                ],
                [
                    '0x0fea',
                    '0x2f3c7b7aebd6c9af7a5b4259f0ea77d96362efbdca397b9f17e3c6924296c53f',
                    '0x0e4197ba6e38cecf99715f523c1805a58559072f944443bad1152dee73bfb167',
                ],
            ]

            const appendSignaturesSpy = sandbox.spy(tx, 'appendSignatures')
            let combined = tx.combineSignedRawTransactions(rlpEncodedStrings)
            expect(appendSignaturesSpy).to.have.been.callCount(rlpEncodedStrings.length)

            const rlpEncodedStringsWithFeePayerSignatures = [
                '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',
            ]
            const expectedFeePayerSignatures = [
                [
                    '0x0fe9',
                    '0xa4ca740e08115db092a79ce902bdac45347a3d34a74ea0fcc371ccf01269ca43',
                    '0x29e095bf3f9e0be7e2130fe6985419114958877412b46b5b4243cc39380c5028',
                ],
                [
                    '0x0fea',
                    '0x9c86edd1b5d75ac1050a5a7494dece5f186b8e9654f75cf4942f7dca57fc2de0',
                    '0x32f306028776389107c40f1765679b2630f093b1c4f4fda9415f0c909c7addef',
                ],
                [
                    '0x0fe9',
                    '0x392e7a5d2efbc7da9d114ce79797eebbe2007ece065109f7f93baed1e23bb22c',
                    '0x22e161a9f20c14b5830154e819cdaf59e8d82690b318afb19e2903b52020bb3e',
                ],
            ]

            const appendFeePayerSignaturesSpy = sandbox.spy(tx, 'appendFeePayerSignatures')
            combined = tx.combineSignedRawTransactions(rlpEncodedStringsWithFeePayerSignatures)
            expect(appendFeePayerSignaturesSpy).to.have.been.callCount(rlpEncodedStringsWithFeePayerSignatures.length)

            // combine multiple signatures and feePayerSignatures
            tx = caver.transaction.feeDelegatedCancel.create(transactionObj)
            const combinedWithMultiple = tx.combineSignedRawTransactions([combined])

            expect(combined).to.equal(combinedWithMultiple)
            checkSignature(tx, { expectedSignatures })
            checkFeePayerSignature(tx, { expec