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ERC20Mixer refund tests

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This commit is contained in:
Alexey 2019-10-17 19:19:35 +03:00
parent a13a7306e2
commit 0484408e82
1 changed files with 46 additions and 2 deletions
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48
test/ERC20Mixer.test.js
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@ -145,9 +145,11 @@ contract('ERC20Mixer', accounts => {
const balanceMixerBefore = await token.balanceOf(mixer.address)
const balanceRelayerBefore = await token.balanceOf(relayer)
const ethBalanceOperatorBefore = await web3.eth.getBalance(operator)
const balanceRecieverBefore = await token.balanceOf(toHex(receiver.toString()))
const ethBalanceOperatorBefore = await web3.eth.getBalance(operator)
const ethBalanceRecieverBefore = await web3.eth.getBalance(toHex(receiver.toString()))
const ethBalanceRelayerBefore = await web3.eth.getBalance(relayer)
let isSpent = await mixer.isSpent(input.nullifierHash.toString(16).padStart(66, '0x00000'))
isSpent.should.be.equal(false)
// Uncomment to measure gas usage
@ -160,12 +162,15 @@ contract('ERC20Mixer', accounts => {
const ethBalanceOperatorAfter = await web3.eth.getBalance(operator)
const balanceRecieverAfter = await token.balanceOf(toHex(receiver.toString()))
const ethBalanceRecieverAfter = await web3.eth.getBalance(toHex(receiver.toString()))
const ethBalanceRelayerAfter = await web3.eth.getBalance(relayer)
const feeBN = toBN(fee.toString())
balanceMixerAfter.should.be.eq.BN(toBN(balanceMixerBefore).sub(toBN(tokenDenomination)))
balanceRelayerAfter.should.be.eq.BN(toBN(balanceRelayerBefore).add(feeBN))
ethBalanceOperatorAfter.should.be.eq.BN(toBN(ethBalanceOperatorBefore))
balanceRecieverAfter.should.be.eq.BN(toBN(balanceRecieverBefore).add(toBN(tokenDenomination).sub(feeBN)))
ethBalanceOperatorAfter.should.be.eq.BN(toBN(ethBalanceOperatorBefore))
ethBalanceRecieverAfter.should.be.eq.BN(toBN(ethBalanceRecieverBefore).add(toBN(refund)))
ethBalanceRelayerAfter.should.be.eq.BN(toBN(ethBalanceRelayerBefore).sub(toBN(refund)))
logs[0].event.should.be.equal('Withdraw')
logs[0].args.nullifierHash.should.be.eq.BN(toBN(input.nullifierHash.toString()))
@ -175,6 +180,45 @@ contract('ERC20Mixer', accounts => {
isSpent.should.be.equal(true)
})
it('should reject with wrong refund value', async () => {
const deposit = generateDeposit()
const user = accounts[4]
await tree.insert(deposit.commitment)
await token.mint(user, tokenDenomination)
await token.approve(mixer.address, tokenDenomination, { from: user })
await mixer.deposit(toBN(deposit.commitment.toString()), { from: user, gasPrice: '0' })
const { root, path_elements, path_index } = await tree.path(0)
// Circuit input
const input = stringifyBigInts({
// public
root,
nullifierHash: pedersenHash(deposit.nullifier.leInt2Buff(31)),
relayer,
receiver,
fee,
refund,
// private
nullifier: deposit.nullifier,
secret: deposit.secret,
pathElements: path_elements,
pathIndex: path_index,
})
const proofData = await websnarkUtils.genWitnessAndProve(groth16, input, circuit, proving_key)
const { proof, publicSignals } = websnarkUtils.toSolidityInput(proofData)
let { reason } = await mixer.withdraw(proof, publicSignals, { value: 1, from: relayer, gasPrice: '0' }).should.be.rejected
reason.should.be.equal('Incorrect refund amount received by the contract')
;({ reason } = await mixer.withdraw(proof, publicSignals, { value: toBN(refund).mul(toBN(2)), from: relayer, gasPrice: '0' }).should.be.rejected)
reason.should.be.equal('Incorrect refund amount received by the contract')
})
it.skip('should work with REAL USDT', async () => {
// dont forget to specify your token in .env
// USDT decimals is 6, so TOKEN_AMOUNT=1000000