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tx-utils - stricter naming type-based convention

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This commit is contained in:
kumavis 2017-03-07 22:47:35 -08:00
parent 68b99dfb08
commit c063fab993
2 changed files with 29 additions and 23 deletions
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24
app/scripts/lib/tx-utils.js
View File

@ -53,25 +53,23 @@ module.exports = class txProviderUtils {
}
// if gasLimit not originally specified,
// try adding an additional gas buffer to our estimation for safety
const estimatedGasBn = new BN(ethUtil.stripHexPrefix(txData.estimatedGas), 16)
const blockGasLimitBn = new BN(ethUtil.stripHexPrefix(blockGasLimitHex), 16)
const finalRecommendedGasBn = new BN(this.addGasBuffer(estimatedGasBn, blockGasLimitHex), 16)
txParams.gas = ethUtil.intToHex(finalRecommendedGasBn)
const recommendedGasHex = this.addGasBuffer(txData.estimatedGas, blockGasLimitHex)
txParams.gas = recommendedGasHex
cb()
return
}
addGasBuffer (initialGasLimitHex, blockGasLimitHex) {
const blockGasLimitBn = new BN(ethUtil.stripHexPrefix(blockGasLimitHex), 16)
const initialGasLimitBn = new BN(ethUtil.stripHexPrefix(initialGasLimitHex), 16)
const initialGasLimitBn = hexToBn(initialGasLimitHex)
const blockGasLimitBn = hexToBn(blockGasLimitHex)
const bufferedGasLimitBn = initialGasLimitBn.muln(1.5)
// if initialGasLimit is above blockGasLimit, dont modify it
if (initialGasLimitBn.gt(blockGasLimitBn)) return initialGasLimitHex
if (initialGasLimitBn.gt(blockGasLimitBn)) return bnToHex(initialGasLimitBn)
// if bufferedGasLimit is below blockGasLimit, use bufferedGasLimit
if (bufferedGasLimitBn.lt(blockGasLimitBn)) return ethUtil.addHexPrefix(bufferedGasLimitBn.toString(16))
if (bufferedGasLimitBn.lt(blockGasLimitBn)) return bnToHex(bufferedGasLimitBn)
// otherwise use blockGasLimit
return ethUtil.addHexPrefix(blockGasLimitBn.toString(16))
return bnToHex(blockGasLimitBn)
}
fillInTxParams (txParams, cb) {
@ -129,3 +127,11 @@ module.exports = class txProviderUtils {
function isUndef(value) {
return value === undefined
}
function bnToHex(inputBn) {
return ethUtil.addHexPrefix(inputBn.toString(16))
}
function hexToBn(inputHex) {
return new BN(ethUtil.stripHexPrefix(inputHex), 16)
}

28
test/unit/tx-utils-test.js
View File

@ -15,11 +15,11 @@ describe('txUtils', function() {
describe('addGasBuffer', function() {
it('multiplies by 1.5, when within block gas limit', function() {
// naive estimatedGas: 0x123fad (~1.2 mil)
const input = '0x123fad'
const inputHex = '0x123fad'
// dummy gas limit: 0x3d4c52 (4 mil)
const blockGasLimit = '0x3d4c52'
const output = txUtils.addGasBuffer(input, blockGasLimit)
const inputBn = new BN(ethUtil.stripHexPrefix(input), 'hex')
const blockGasLimitHex = '0x3d4c52'
const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
const inputBn = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
const outputBn = new BN(ethUtil.stripHexPrefix(output), 'hex')
const expectedBn = inputBn.muln(1.5)
assert(outputBn.eq(expectedBn), 'returns 1.5 the input value')
@ -27,25 +27,25 @@ describe('txUtils', function() {
it('uses original estimatedGas, when above block gas limit', function() {
// naive estimatedGas: 0x123fad (~1.2 mil)
const input = '0x123fad'
const inputHex = '0x123fad'
// dummy gas limit: 0x0f4240 (1 mil)
const blockGasLimit = '0x0f4240'
const output = txUtils.addGasBuffer(input, blockGasLimit)
const inputBn = new BN(ethUtil.stripHexPrefix(input), 'hex')
const blockGasLimitHex = '0x0f4240'
const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
const inputBn = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
const outputBn = new BN(ethUtil.stripHexPrefix(output), 'hex')
const expectedBn = new BN(ethUtil.stripHexPrefix(input), 'hex')
const expectedBn = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
assert(outputBn.eq(expectedBn), 'returns the original estimatedGas value')
})
it('buffers up to block gas limit', function() {
// naive estimatedGas: 0x123fad (~1.2 mil)
const input = '0x1e8480'
const inputHex = '0x1e8480'
// dummy gas limit: 0x1e8480 (2 mil)
const blockGasLimit = '0x1e8480'
const output = txUtils.addGasBuffer(input, blockGasLimit)
const inputBn = new BN(ethUtil.stripHexPrefix(input), 'hex')
const blockGasLimitHex = '0x1e8480'
const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
const inputBn = new BN(ethUtil.stripHexPrefix(inputHex), 'hex')
const outputBn = new BN(ethUtil.stripHexPrefix(output), 'hex')
const expectedBn = new BN(ethUtil.stripHexPrefix(blockGasLimit), 'hex')
const expectedBn = new BN(ethUtil.stripHexPrefix(blockGasLimitHex), 'hex')
assert(outputBn.eq(expectedBn), 'returns the block gas limit value')
})
})