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zilleriumzillerium
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donate
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‎contracts/donatesol.sol‎

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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.4;
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contract Contract {
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address public owner;
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address public charity;
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constructor(address _charity) {
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owner = msg.sender;
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charity = _charity;
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}
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receive() external payable {
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//console.log(msg.value); // 100000
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}
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function tip() public payable {
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//console.log(msg.value); // 100000
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owner.call{value: msg.value}("");
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}
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function donate() public {
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payable(charity).transfer(address(this).balance);
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}
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}

‎contracts/donatetest.js‎

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const { assert } = require('chai');
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describe('Contract', function () {
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const charity = ethers.Wallet.createRandom().address;
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const donation = ethers.utils.parseEther("1");
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let contract;
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let owner;
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let tipper;
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before(async () => {
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const Contract = await ethers.getContractFactory("Contract");
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contract = await Contract.deploy(charity);
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await contract.deployed();
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owner = ethers.provider.getSigner(0);
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await owner.sendTransaction({ to: contract.address, value: donation });
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tipper = ethers.provider.getSigner(1);
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});
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it('should store the owner', async () => {
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const _owner = await contract.owner.call();
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assert.equal(_owner, await owner.getAddress());
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});
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it('should receive the initial donation', async () => {
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const balance = await ethers.provider.getBalance(contract.address);
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assert(balance.eq(donation), "expected the ether to be received");
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});
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describe('after two .25 ether tips', () => {
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const tip = ethers.utils.parseEther("0.25");
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let balanceBefore;
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before(async () => {
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balanceBefore = await ethers.provider.getBalance(await owner.getAddress());
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await contract.connect(tipper).tip({ value: tip });
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await contract.connect(tipper).tip({ value: tip });
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});
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it('should add .5 ether to the owners balance', async () => {
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const balanceAfter = await ethers.provider.getBalance(await owner.getAddress());
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assert.equal(balanceAfter.sub(balanceBefore).toString(), tip.mul(2).toString());
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});
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});
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describe('after donating', () => {
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before(async () => {
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await contract.connect(tipper).donate();
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});
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it('should add the donations to the charity balance', async () => {
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const _donation = await ethers.provider.getBalance(charity);
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assert.equal(_donation.toString(), donation.toString());
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});
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});
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});

‎contracts/payable.sol‎

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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.4;
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contract Contract {
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address public owner;
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constructor(){
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owner = msg.sender;
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}
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receive() external payable {
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//console.log(msg.value); // 100000
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}
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}

‎contracts/payabletest.js‎

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const { assert } = require('chai');
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describe('Contract', function () {
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let contract;
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let value = ethers.utils.parseEther("1");
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let owner;
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before(async () => {
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const Contract = await ethers.getContractFactory("Contract");
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contract = await Contract.deploy();
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await contract.deployed();
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owner = ethers.provider.getSigner(0);
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await owner.sendTransaction({ to: contract.address, value });
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});
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it('should store the owner', async () => {
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const _owner = await contract.owner.call();
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assert.equal(_owner, await owner.getAddress());
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});
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it('should receive the ether', async () => {
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const balance = await ethers.provider.getBalance(contract.address);
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assert(balance.eq(value), "expected the ether to be received");
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});
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});

‎contracts/transfercall.sol‎

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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.4;
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contract Contract {
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address public owner;
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constructor(){
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owner = msg.sender;
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}
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receive() external payable {
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//console.log(msg.value); // 100000
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}
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function tip() public payable {
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//console.log(msg.value); // 100000
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owner.call{value: msg.value}("");
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}
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}

‎contracts/transfercalltest.js‎

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const { assert } = require('chai');
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describe('Contract', function () {
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let contract;
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let value = ethers.utils.parseEther("1");
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let owner;
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let tipper;
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before(async () => {
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const Contract = await ethers.getContractFactory("Contract");
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contract = await Contract.deploy();
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await contract.deployed();
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owner = ethers.provider.getSigner(0);
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await owner.sendTransaction({ to: contract.address, value });
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tipper = ethers.provider.getSigner(1);
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});
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it('should store the owner', async () => {
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const _owner = await contract.owner.call();
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assert.equal(_owner, await owner.getAddress());
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});
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it('should receive the ether', async () => {
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const balance = await ethers.provider.getBalance(contract.address);
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assert(balance.eq(value), "expected the ether to be received");
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});
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describe('after a .25 ether tip', () => {
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const tip = ethers.utils.parseEther("0.25");
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let balanceBefore;
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before(async () => {
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balanceBefore = await ethers.provider.getBalance(await owner.getAddress());
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await contract.connect(tipper).tip({ value: tip });
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});
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it('should send the tip to the owner', async () => {
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const balanceAfter = await ethers.provider.getBalance(await owner.getAddress());
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assert.equal(balanceAfter.sub(balanceBefore).toString(), tip);
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});
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});
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describe('after a .5 ether tip', () => {
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const tip = ethers.utils.parseEther("0.5");
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let balanceBefore;
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before(async () => {
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balanceBefore = await ethers.provider.getBalance(await owner.getAddress());
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await contract.connect(tipper).tip({ value: tip });
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});
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it('should send the tip to the owner', async () => {
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const balanceAfter = await ethers.provider.getBalance(await owner.getAddress());
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assert.equal(balanceAfter.sub(balanceBefore).toString(), tip);
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});
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});
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});

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