I have a situation I have isolated that seems very bizarre to me and I cannot figure out. I am running truffle v1.0.2 (not latest) and testrpc v2.0.5.
When I send ETH from an account to a contract with a fallback function that calls a library function, the sending account is reduced by twice as much as the send value. When I remove the library call, it sends the expected amount. It should all be clear from the below code. What's going on?
You can clone and test it for yourself at: https://github.com/raineorshine/double-send.
Contract.sol:
import "MyLib.sol";
contract Contract {
function() {
// The test is showing that the balance of account[1] is decremented
// by 200 instead of the expected 100.
// If I remove this line, the balance of account[1] is decremented
// by 100.
MyLib.doNothing();
}
}
MyLib.sol:
library MyLib {
function doNothing() {
}
}
test/spec.js:
describe('test', () => {
contract('Contract', () => {
it('send to deployed address', () => {
const contract = Contract.deployed()
const initialBalance = web3.eth.getBalance(web3.eth.accounts[1])
console.log(web3.fromWei(initialBalance).toString())
web3.eth.sendTransaction({ from: web3.eth.accounts[1], to: contract.address, value: web3.toWei(100) })
const finalBalance = web3.eth.getBalance(web3.eth.accounts[1])
console.log(web3.fromWei(finalBalance).toString())
const diff = web3.fromWei(initialBalance.minus(finalBalance))
console.log('initialBalance - finalBalance == ' + diff)
assert(diff > 99 && diff < 101, 'Balance after is not ~100 less than balance before.')
})
})
})
Here is the test output:
test
Contract: Contract
21267647932558650071.31300778513203191
21267647932558649871.313007785132010657
initialBalance - finalBalance == 200.000000000000021253
1) send to deployed address
> No events were emitted
0 passing (2s)
1 failing
1) test Contract: Contract send to deployed address:
AssertionError: Balance after is not ~100 less than balance before.
