mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-10-23 03:36:18 +02:00
53 lines
2.0 KiB
JavaScript
53 lines
2.0 KiB
JavaScript
const assert = require('assert')
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const ethUtil = require('ethereumjs-util')
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const BN = ethUtil.BN
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const TxUtils = require('../../app/scripts/lib/tx-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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})
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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: 0x123fad (~1.2 mil)
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const inputHex = '0x123fad'
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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 = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
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const outputBn = new BN(ethUtil.stripHexPrefix(output), 'hex')
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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: 0x123fad (~1.2 mil)
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const inputHex = '0x123fad'
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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 = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
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const outputBn = new BN(ethUtil.stripHexPrefix(output), 'hex')
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const expectedBn = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
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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 block gas limit', function() {
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// naive estimatedGas: 0x123fad (~1.2 mil)
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const inputHex = '0x1e8480'
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// dummy gas limit: 0x1e8480 (2 mil)
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const blockGasLimitHex = '0x1e8480'
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const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
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const inputBn = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
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const outputBn = new BN(ethUtil.stripHexPrefix(output), 'hex')
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const expectedBn = new BN(ethUtil.stripHexPrefix(blockGasLimitHex), 'hex')
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assert(outputBn.eq(expectedBn), 'returns the block gas limit value')
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})
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})
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})
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