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85 lines
2.7 KiB
85 lines
2.7 KiB
import { strict as assert } from 'assert';
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import Transaction from 'ethereumjs-tx';
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import { hexToBn, bnToHex } from '../../lib/util';
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import TxUtils from './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(
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new Proxy(
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{},
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{
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get: () => {
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return () => undefined;
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},
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},
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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.ok(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.ok(
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outputBn.eq(expectedBn),
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'returns the original estimatedGas value',
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);
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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(
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output,
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expectedHex,
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'returns the gas limit recommended ceiling value',
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);
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});
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});
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});
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