feat: test_target.sol

test/test_target.sol

@@ -0,0 +1,23 @@
+/// @SPDX-License-Identifier: UPL-1.0
+pragma solidity ^0.8.9;
+
+/// @title Test Target
+/// @dev simulates behaviors for testing 
+// PhonyUser
+
+contract TestTarget {
+    /// @dev Always succeeds and returns data.
+    function successFunction() external pure returns (string memory) {
+        return "SUCCESS";
+    }
+
+    /// @dev Always reverts with a custom error message.
+    function errorFunction() external pure {
+        revert("CUSTOM_ERROR");
+    }
+
+    /// @dev Always reverts with empty data.
+    function emptyRevertFunction() external pure {
+        revert();
+    }
+}