50 lines
1.9 KiB
Solidity
50 lines
1.9 KiB
Solidity
// SPDX-License-Identifier: UNLICENSED
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pragma solidity >=0.8.19 <0.9.0;
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import { PRBTest } from "@prb/test/PRBTest.sol";
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import { console2 } from "forge-std/console2.sol";
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import { StdCheats } from "forge-std/StdCheats.sol";
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interface IERC20 {
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function balanceOf(address account) external view returns (uint256);
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}
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/// @dev See the "Writing Tests" section in the Foundry Book if this is your first time with Forge.
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/// https://book.getfoundry.sh/forge/writing-tests
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contract FooTest is PRBTest, StdCheats {
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/// @dev An optional function invoked before each test case is run
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function setUp() public virtual {
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// solhint-disable-previous-line no-empty-blocks
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}
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/// @dev Simple test. Run Forge with `-vvvv` to see console logs.
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function test_Example() external {
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console2.log("Hello World");
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assertTrue(true);
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}
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/// @dev Test that fuzzes an unsigned integer.
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function testFuzz_Example(uint256 x) external {
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vm.assume(x != 0);
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assertGt(x, 0);
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}
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/// @dev Test that runs against a fork of Ethereum Mainnet. You need to set `API_KEY_ALCHEMY` in your environment
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/// for this test to run - you can get an API key for free at https://alchemy.com.
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function testFork_Example() external {
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string memory alchemyApiKey = vm.envOr("API_KEY_ALCHEMY", string(""));
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// Silently pass this test if the user didn't define the API key.
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if (bytes(alchemyApiKey).length == 0) {
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return;
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}
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// Run the test normally, otherwise.
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vm.createSelectFork({ urlOrAlias: "mainnet", blockNumber: 16_428_000 });
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address usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
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address holder = 0x7713974908Be4BEd47172370115e8b1219F4A5f0;
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uint256 actualBalance = IERC20(usdc).balanceOf(holder);
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uint256 expectedBalance = 196_307_713.810457e6;
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assertEq(actualBalance, expectedBalance);
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}
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}
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