Add a SplitPayment contract to distribute funds among multiple beneficiaries

test/SplitPayment.js

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+const BigNumber = web3.BigNumber
+
+const should = require('chai')
+  .use(require('chai-as-promised'))
+  .use(require('chai-bignumber')(BigNumber))
+  .should()
+
+const EVMThrow = require('./helpers/EVMThrow.js')
+const SplitPaymentMock = artifacts.require('./helpers/SplitPaymentMock.sol')
+
+contract('SplitPayment', function ([owner, payee1, payee2, payee3, nonpayee1, payer1]) {
+  const amount = web3.toWei(1.0, 'ether')
+
+  beforeEach(async function () {
+    this.payees = [payee1, payee2, payee3]
+    this.shares = [20, 10, 70]
+
+    this.contract = await SplitPaymentMock.new()
+    await this.contract.addPayeeMany(this.payees, this.shares)
+  })
+
+  it('should accept payments', async function () {
+    await web3.eth.sendTransaction({ from: owner, to: this.contract.address, value: amount })
+
+    const balance = web3.eth.getBalance(this.contract.address)
+    balance.should.be.bignumber.equal(amount)
+  })
+
+  it('should return if address is payee', async function () {
+    const isPayee = await this.contract.isPayee.call(payee1)
+    isPayee.should.equal(true)
+  })
+
+  it('should return if address is not payee', async function () {
+    const isPayee = await this.contract.isPayee.call(nonpayee1)
+    isPayee.should.equal(false)
+  })
+
+  it('should return the correct payee by address', async function () {
+    const payeeIdx = 0
+    const [payee, shares] = await this.contract.getPayee.call(this.payees[payeeIdx])
+    payee.should.be.equal(payee1)
+    shares.should.be.bignumber.equal(this.shares[payeeIdx])
+  })
+
+  it('should return the correct payee by index', async function () {
+    const payeeIdx = 1
+    const [payee, shares] = await this.contract.getPayeeAtIndex.call(payeeIdx)
+    payee.should.be.equal(payee2)
+    shares.should.be.bignumber.equal(this.shares[payeeIdx])
+  })
+
+  it('should throw if payees and shares array have different sizes', async function () {
+    const payees = [payee1, payee2, payee3]
+    const shares = [50, 50]
+    await this.contract.addPayeeMany(payees, shares).should.be.rejectedWith(EVMThrow)
+  })
+
+  it('should throw if try to add same payee multiple times', async function () {
+    const payees = [payee1, payee1]
+    const shares = [50, 50]
+    await this.contract.addPayeeMany(payees, shares).should.be.rejectedWith(EVMThrow)
+  })
+
+  it('should throw if try to add payee with zero shares', async function () {
+    await this.contract.addPayee(nonpayee1, 0).should.be.rejectedWith(EVMThrow)
+  })
+
+  it('should throw if no funds to distribute', async function () {
+    await this.contract.distributeFunds({from: payee1}).should.be.rejectedWith(EVMThrow)
+  })
+
+  it('should distribute funds to payees', async function () {
+    await web3.eth.sendTransaction({from: payer1, to: this.contract.address, value: amount})
+
+    const initBalance = web3.eth.getBalance(this.contract.address)
+    initBalance.should.be.bignumber.equal(amount)
+
+    const initAmount1 = web3.eth.getBalance(payee1)
+    const initAmount2 = web3.eth.getBalance(payee2)
+    const initAmount3 = web3.eth.getBalance(payee3)
+
+    await this.contract.distributeFunds({from: payee1})
+
+    // Contract should have zero balance after distribution
+    const afterBalance = web3.eth.getBalance(this.contract.address)
+    afterBalance.should.be.bignumber.equal(0)
+
+    const profit1 = web3.eth.getBalance(payee1) - initAmount1
+    const profit2 = web3.eth.getBalance(payee2) - initAmount2
+    const profit3 = web3.eth.getBalance(payee3) - initAmount3
+
+    assert(Math.abs(profit1 - web3.toWei(0.20, 'ether')) < 1e16);
+    assert(Math.abs(profit2 - web3.toWei(0.10, 'ether')) < 1e16);
+    assert(Math.abs(profit3 - web3.toWei(0.70, 'ether')) < 1e16);
+  })
+
+  it('should throw if non-payee want to distribute funds', async function () {
+    await web3.eth.sendTransaction({from: payer1, to: this.contract.address, value: amount})
+    await this.contract.distributeFunds({from: nonpayee1}).should.be.rejectedWith(EVMThrow)
+  })
+})

test/helpers/SplitPaymentMock.sol

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+pragma solidity ^0.4.15;
+
+import '../../contracts/payment/SplitPayment.sol';
+
+// mock class using SplitPayment
+contract SplitPaymentMock is SplitPayment {
+  function SplitPaymentMock() SplitPayment(0) payable { }
+  function () payable {}
+}