Testing Send ETH

src/Wallet.sol

@@ -4,11 +4,15 @@ pragma solidity ^0.8.20;
 contract Wallet {
     address payable public owner;
 
+    event Deposit(address account, uint256 amount);
+
     constructor () payable {
         owner = payable(msg.sender);
     }
 
-    receive() external payable {}
+    receive() external payable {
+        emit Deposit(msg.sender, msg.value);
+    }
 
     function withdraw(uint256 _amount) external {
         require(msg.sender == owner, "caller is not owner");

test/Auth.t.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity ^0.8.20;
 
 import "forge-std/Test.sol";

test/Wallet.t.sol

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.20;
+
+import "forge-std/Test.sol";
+import {Wallet} from "../src/Wallet.sol";
+
+// Examples of deal and hoax
+// deal(address, uint) - Set balance of address
+// hoax(address, uint) - deal + prank, Sets up a prank and set balance
+
+contract WalletTest is Test {
+    Wallet public wallet;
+
+    function setUp() public {
+        wallet = new Wallet{value: 1e18}();
+    }
+
+    function _send(uint256 amount) private {
+        (bool ok,) = address(wallet).call{value: amount}("");
+        require(ok, "send ETH failed");
+    }
+
+    function testEthBalance() public {
+        console.log("ETH balance", address(this).balance / 1e18);
+    }
+
+    function testSendEth() public {
+        uint bal = address(wallet).balance;
+
+        // deal(address, uint) - Set balance of address
+        deal(address(1), 100);
+        assertEq(address(1).balance, 100);
+
+        deal(address(1), 10);
+        assertEq(address(1).balance, 10);
+
+        // hoax(address, uint) - deal + prank, Sets up a prank and set balance
+        deal(address(1), 123e18);
+        vm.prank(address(1));
+        _send(123e18);
+
+        hoax(address(1), 456e18);
+        _send(456e18);
+
+        assertEq(address(wallet).balance, bal + 123e18 + 456e18);
+    }
+    
+}