add Fund Me Foundry Smart Contract

fund-me/test/integration/InteractionsTest.t.sol

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.18;
+
+import {console} from "forge-std/console.sol";
+import {Test} from "forge-std/Test.sol";
+import {FundMe} from "../../src/FundMe.sol";
+import {DeployFundMe} from "../../script/DeployFundMe.s.sol";
+import {FundFundMe, WithdrawFundMe} from "../../script/Interactions.s.sol";
+
+contract InteractionsTest is Test {
+    FundMe fundMe;
+    
+    address USER = makeAddr("user");
+    uint256 constant SEND_VALUE = 0.1 ether;
+    uint256 constant STARTING_BALANCE = 10 ether;
+    uint256 constant GAS_PRICE = 1;
+
+    function setUp() external {
+	DeployFundMe deploy = new DeployFundMe();
+	fundMe = deploy.run();
+	vm.deal(USER, STARTING_BALANCE);
+    }
+
+    function testUserCanFundInteractions() public {
+ 	FundFundMe fundFundMe = new FundFundMe();   	
+	fundFundMe.fundFundMe(address(fundMe));
+
+	WithdrawFundMe withdrawFundMe = new WithdrawFundMe();
+	withdrawFundMe.withdrawFundMe(address(fundMe));
+
+	assert(address(fundMe).balance == 0);
+    }
+}