Added new function and test for it

src/MyContract.sol

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+// src/MyContract.sol
+pragma solidity ^0.8.0;
+
+contract MyContract {
+    // Existing functions and variables
+
+    function newFunction() public pure returns (string memory) {
+        return "Hello, Farcaster!";
+    }
+}

test/TestMyContract.t.sol

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+// test/TestMyContract.t.sol
+pragma solidity ^0.8.0;
+
+import "forge-std/Test.sol";
+import "../src/MyContract.sol";
+
+contract TestMyContract is Test {
+    MyContract myContract;
+
+    function setUp() public {
+        myContract = new MyContract();
+    }
+
+    function testNewFunction() public {
+        string memory result = myContract.newFunction();
+        assertEq(result, "Hello, Farcaster!");
+    }
+}