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Add PurchaseTokenTests

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Aadi Desai 2023-02-19 00:24:52 +00:00
parent 3354d7d72c
commit 1abdf8893c
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test/PurchaseToken.t.sol Normal file
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// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.10;
import "forge-std/Test.sol";
import "../src/contracts/PurchaseToken.sol";
contract PurchaseTokenTest is Test {
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(
address indexed _owner,
address indexed _spender,
uint256 _value
);
PurchaseToken public token;
address public alice = makeAddr("alice");
address public bob = makeAddr("bob");
address public charlie = makeAddr("charlie");
function setUp() public {
token = new PurchaseToken();
}
function testName() public {
assertEq(token.name(), "PurchaseToken");
}
function testSymbol() public {
assertEq(token.symbol(), "PT");
}
function testDecimals() public {
assertEq(token.decimals(), 18);
}
function testMint() public {
vm.deal(alice, 1 ether);
assertEq(token.balanceOf(alice), 0);
assertEq(token.totalSupply(), 0);
vm.prank(alice);
vm.expectEmit(true, true, true, false);
emit Transfer(address(0), alice, 1e19);
token.mint{value: 1e17}();
assertEq(token.balanceOf(alice), 1e19);
assertEq(token.totalSupply(), 1e19);
}
function testMintInsufficientFunds() public {
vm.deal(alice, 0.01 ether);
assertEq(token.balanceOf(alice), 0);
assertEq(token.totalSupply(), 0);
vm.prank(alice);
vm.expectRevert();
token.mint{value: 1e17}();
}
function testTransfer() public {
vm.deal(alice, 1 ether);
vm.prank(alice);
token.mint{value: 1e17}();
vm.prank(alice);
vm.expectEmit(true, true, false, true);
emit Transfer(alice, bob, 1e18);
token.transfer(bob, 1e18);
assertEq(token.balanceOf(alice), 9e18);
assertEq(token.balanceOf(bob), 1e18);
}
function testTransferInsufficientFunds() public {
vm.deal(alice, 1 ether);
vm.prank(alice);
token.mint{value: 1e17}();
vm.prank(alice);
vm.expectRevert("ERC20: transfer amount exceeds balance");
token.transfer(bob, 2e19);
}
function testApprove() public {
vm.prank(alice);
vm.expectEmit(true, true, false, true);
emit Approval(alice, bob, 1e18);
token.approve(bob, 1e18);
assertEq(token.allowance(alice, bob), 1e18);
}
function testTransferFrom() public {
vm.deal(alice, 1 ether);
vm.prank(alice);
vm.expectEmit(true, true, true, false);
emit Transfer(address(0), alice, 1e19);
token.mint{value: 1e17}();
vm.prank(alice);
token.approve(bob, 3e18);
vm.prank(bob);
vm.expectEmit(true, true, false, true);
emit Transfer(alice, charlie, 1e18);
token.transferFrom(alice, charlie, 1e18);
assertEq(token.balanceOf(alice), 9e18);
assertEq(token.allowance(alice, bob), 2e18);
assertEq(token.balanceOf(bob), 0);
assertEq(token.balanceOf(charlie), 1e18);
}
function testTransferFromInsufficientAllowance() public {
vm.deal(alice, 1 ether);
vm.prank(alice);
vm.expectEmit(true, true, true, false);
emit Transfer(address(0), alice, 1e19);
token.mint{value: 1e17}();
vm.prank(alice);
token.approve(bob, 3e18);
vm.prank(bob);
vm.expectRevert("ERC20: insufficient allowance");
token.transferFrom(alice, charlie, 4e18);
}
}