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Fix floating point input bug

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When sending a transaction, we were converting to BN before handling decimals, which meant we were losing any precision past a decimal point, since BN does not handle decimals!

Put this numeric normalization into a utility function with a test around it and got it working.
This commit is contained in:
Dan Finlay 2016-04-19 18:56:22 -07:00
parent f79601ee58
commit d6ab6bb4fa
3 changed files with 55 additions and 31 deletions
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62
test/unit/util_test.js
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@ -82,33 +82,47 @@ describe('util', function() {
})
describe('#normalizeToWei', function() {
it('should convert an eth to the appropriate equivalent values', function() {
var valueTable = {
wei: '1000000000000000000',
kwei: '1000000000000000',
mwei: '1000000000000',
gwei: '1000000000',
szabo: '1000000',
finney:'1000',
ether: '1',
kether:'0.001',
mether:'0.000001',
// AUDIT: We're getting BN numbers on these ones.
// I think they're big enough to ignore for now.
// gether:'0.000000001',
// tether:'0.000000000001',
}
var oneEthBn = new ethUtil.BN(ethInWei, 10)
describe('normalizing values', function() {
for(var currency in valueTable) {
describe('#normalizeToWei', function() {
it('should convert an eth to the appropriate equivalent values', function() {
var valueTable = {
wei: '1000000000000000000',
kwei: '1000000000000000',
mwei: '1000000000000',
gwei: '1000000000',
szabo: '1000000',
finney:'1000',
ether: '1',
// kether:'0.001',
// mether:'0.000001',
// AUDIT: We're getting BN numbers on these ones.
// I think they're big enough to ignore for now.
// gether:'0.000000001',
// tether:'0.000000000001',
}
var oneEthBn = new ethUtil.BN(ethInWei, 10)
var value = new ethUtil.BN(valueTable[currency], 10)
var output = util.normalizeToWei(value, currency)
assert.equal(output.toString(10), valueTable.wei, `value of ${output.toString(10)} ${currency} should convert to ${oneEthBn}`)
for(var currency in valueTable) {
}
var value = new ethUtil.BN(valueTable[currency], 10)
var output = util.normalizeToWei(value, currency)
assert.equal(output.toString(10), valueTable.wei, `value of ${output.toString(10)} ${currency} should convert to ${oneEthBn}`)
}
})
})
describe('#normalizeNumberToWei', function() {
it('should convert a kwei number to the appropriate equivalent wei', function() {
var result = util.normalizeNumberToWei(1.111, 'kwei')
assert.equal(result.toString(10), '1111', 'accepts decimals')
})
it('should convert a ether number to the appropriate equivalent wei', function() {
var result = util.normalizeNumberToWei(1.111, 'ether')
assert.equal(result.toString(10), '1111000000000000000', 'accepts decimals')
})
})
})
})

10
ui/app/send.js
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@ -108,11 +108,11 @@ SendTransactionScreen.prototype.back = function() {
SendTransactionScreen.prototype.onSubmit = function(event) {
var recipient = document.querySelector('input.address').value
var amount = new ethUtil.BN(document.querySelector('input.ether').value, 10)
var currency = document.querySelector('select.currency').value
var txData = document.querySelector('textarea.txData').value
var value = util.normalizeToWei(amount, currency)
var inputAmount = parseFloat(document.querySelector('input.ether').value)
var currency = document.querySelector('select.currency').value
var value = util.normalizeNumberToWei(inputAmount, currency)
var balance = this.props.balance
if (value.gt(balance)) {
@ -132,6 +132,8 @@ SendTransactionScreen.prototype.onSubmit = function(event) {
from: this.props.address,
value: '0x' + value.toString(16),
}
var txData = document.querySelector('textarea.txData').value
if (txData) txParams.data = txData
this.props.dispatch(actions.signTx(txParams))

14
ui/app/util.js
View File

@ -28,6 +28,7 @@ module.exports = {
ethToWei: ethToWei,
weiToEth: weiToEth,
normalizeToWei: normalizeToWei,
normalizeNumberToWei: normalizeNumberToWei,
valueTable: valueTable,
bnTable: bnTable,
}
@ -85,13 +86,20 @@ function dataSize(data) {
// returns a BN in wei
function normalizeToWei(amount, currency) {
try {
var ether = amount.div(bnTable[currency])
var wei = ether.mul(bnTable.wei)
return wei
return amount.mul(bnTable.wei).div(bnTable[currency])
} catch (e) {}
return amount
}
var multiple = new ethUtil.BN('1000', 10)
function normalizeNumberToWei(n, currency) {
var enlarged = n * 1000
console.log(`Enlarged, we have ${enlarged}`)
var amount = new ethUtil.BN(String(enlarged), 10)
console.log("Amount inside is "+ amount.toString(10))
return normalizeToWei(amount, currency).div(multiple)
}
function readableDate(ms) {
var date = new Date(ms)
var month = date.getMonth()