77 lines
2.6 KiB
JavaScript
77 lines
2.6 KiB
JavaScript
const assert = require('assert')
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const Transaction = require('ethereumjs-tx')
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const BN = require('bn.js')
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const { hexToBn, bnToHex } = require('../../app/scripts/lib/util')
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const TxUtils = require('../../app/scripts/lib/tx-gas-utils')
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describe('txUtils', function () {
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let txUtils
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before(function () {
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txUtils = new TxUtils(new Proxy({}, {
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get: (obj, name) => {
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return () => {}
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},
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}))
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})
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describe('chain Id', function () {
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it('prepares a transaction with the provided chainId', function () {
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const txParams = {
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to: '0x70ad465e0bab6504002ad58c744ed89c7da38524',
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from: '0x69ad465e0bab6504002ad58c744ed89c7da38525',
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value: '0x0',
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gas: '0x7b0c',
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gasPrice: '0x199c82cc00',
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data: '0x',
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nonce: '0x3',
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chainId: 42,
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}
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const ethTx = new Transaction(txParams)
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assert.equal(ethTx.getChainId(), 42, 'chainId is set from tx params')
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})
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})
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describe('addGasBuffer', function () {
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it('multiplies by 1.5, when within block gas limit', function () {
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// naive estimatedGas: 0x16e360 (1.5 mil)
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const inputHex = '0x16e360'
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// dummy gas limit: 0x3d4c52 (4 mil)
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const blockGasLimitHex = '0x3d4c52'
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const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
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const inputBn = hexToBn(inputHex)
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const outputBn = hexToBn(output)
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const expectedBn = inputBn.muln(1.5)
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assert(outputBn.eq(expectedBn), 'returns 1.5 the input value')
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})
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it('uses original estimatedGas, when above block gas limit', function () {
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// naive estimatedGas: 0x16e360 (1.5 mil)
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const inputHex = '0x16e360'
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// dummy gas limit: 0x0f4240 (1 mil)
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const blockGasLimitHex = '0x0f4240'
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const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
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// const inputBn = hexToBn(inputHex)
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const outputBn = hexToBn(output)
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const expectedBn = hexToBn(inputHex)
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assert(outputBn.eq(expectedBn), 'returns the original estimatedGas value')
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})
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it('buffers up to recommend gas limit recommended ceiling', function () {
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// naive estimatedGas: 0x16e360 (1.5 mil)
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const inputHex = '0x16e360'
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// dummy gas limit: 0x1e8480 (2 mil)
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const blockGasLimitHex = '0x1e8480'
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const blockGasLimitBn = hexToBn(blockGasLimitHex)
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const ceilGasLimitBn = blockGasLimitBn.muln(0.9)
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const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
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// const inputBn = hexToBn(inputHex)
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// const outputBn = hexToBn(output)
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const expectedHex = bnToHex(ceilGasLimitBn)
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assert.equal(output, expectedHex, 'returns the gas limit recommended ceiling value')
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})
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})
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}) |